Search results for "Perform additional" in Home Design Ideas

Relationship: Client
Project Date: March 2014
Project Price Range: more than $100,000
Having purchased our first house in Valley Glen, North Hollywood, we were aware it was in need of serious remodeling. A 1950s Ranch-style home, it came complete with peeling wallpaper, musty carpeting, and even some dilapidated walls. As first-time homeowners we were prepared to spend more money to improve it, but weary when we began meeting contractors. Buyer’s remorse already set in when we interviewed several contractors who were either aloof or unscrupulous.
Then we were fortunate enough to find Mike Ross. He immediately allayed our stress with his professional and forthright demeanor and his integrity was as rock solid from the day we met him through the several months it took to complete our large renovation.
While we had some specific things we wanted in our house, Mike and his team took our wish list and far exceeded our expectations to help truly realize the vision of our dream. Originally a three-bedroom, fourteen-hundred square foot home, our remodel brought an addition of a thousand square feet as well as an overhaul of the landscape; this prospect was particularly daunting for uninitiated owners such as us, but Mike’s consummate professionalism shone through and made the task exponentially less stressful for us.
As well as a new 850 sf Master Bedroom, including a fireplace, and a steam unit in the bath, we added a cozy home theater room, laundry room, and the once forgotten backyard brought a new deck and patio with a trellis. Furthermore, because we went green and made it a smart home, we’re already more energy efficient. In several rooms, as well as the main hallway, for example, Mike installed solar tubes and the amount of natural light that bathes the house is amazing. Even my mom, when she came to visit, was always looking for a light-switch.
As our contractor, Mike Ross took the reins to steer the project and keep it on course and he did so exceptionally. Mike and his team were as attentive to the quality of every nook and corner and he always sought our approval and happiness. Consistently communicative, he always kept us in the loop about progress and was always there to answer any questions and concerns. When an unforeseen contingency did arise, Mike assuaged our concerns by taking action ASAP to rectify the problem. Mike’s team, too, all take pleasure in their efforts. An eclectic group of skilled artisans and craftsmen, they are all polite, punctual, and proud of their work.
Thank you, Mike Ross, for your outstanding leadership, your impeccable standards, and your commitment to our happiness.
Dale & Helen Keis

Nestled in the lush landscape, a modern reinterpretation of a once-fallen barn now features a charming guest cottage with stylish details and contemporary amenities. Situated along a narrow lot in Germantown, New York, the cottage completes a cluster of existing buildings, forming an intimate courtyard on one side. Steel effect folding patio doors fully open the living areas to the expansive fields and the Catskill Mountains beyond.
The homeowners, a young family with parents living abroad, envisioned a cozy yet modern ADU for extended stays. Designed by Lauren Cawse, AIA, architect and partner at The Art of Building, the year-round retreat draws inspiration from traditional local barns while embracing a seamless indoor-outdoor connection.
Captivating Guest Cottage Design Enhances the Senses with Steel Effect Folding Patio Doors
The modern ADU design started with the site itself. Positioned between residential and commercial neighbors, the elongated property required a careful balance of privacy and openness. Architect Lauren Cawse approached the layout by redefining the existing house and garage as the east and west sides of an outdoor room, with the new cottage forming its southern boundary. This arrangement created a clear courtyard near the main residence while directing the 800-square-foot guest house toward the open meadow and the distant Catskill Mountains.
“The unique character of the site and its history inspired the architectural direction,” says Cawse. “The intent was to create a secondary structure in the compound in clear contrast to the modern farmhouse style of the house and garage.”
A Barn-Inspired Exterior Adds Visual Flair
The exterior envelope evokes a traditional barn with a simple gable shape, weathered wood siding, cedar shingles, and a foundation veneer made of local fieldstone. A large sliding barn door adds a complementary feature to the courtyard-facing side, creating a dynamic opening that maintains uninterrupted views through the cottage to the meadow beyond.
Steel effect folding patio doors surrounding the structure add a modern touch of transparency, and simulated divided lites allow the contemporary glass wall systems to harmonize with the traditional elements of the modern ADU design.
“The goal was to fully open the living areas to the outdoors, framing views to the meadows and mountains,” says Cawse. “The positioning of the NanaWall systems frames the views and, when open, dissolves the boundary between inside and out.”
Interior Design That Mirrors Nature’s Tranquility
Inside, the design program features a simple layout with one bedroom, a full bath, a kitchenette, and a living area with a wood-burning stove. The interior, a collaboration between The Art of Building and the homeowners, is defined by an understated palette and tactile materials that reflect the natural setting. Color is introduced through the framed glass views on all sides of the structure. Reclaimed timber collar ties span the ceiling overhead, while stone surfaces and naturally patinated metal accents add quiet texture throughout.
Custom hand-painted Delft tiles along the kitchen backsplash add personal detail, and terra cotta flooring in the bathroom brings warmth and old-world charm. Soaring ceilings and abundant daylight create a peaceful play of light and shadow, shifting subtly with the seasons and emphasizing the cottage’s connection to the natural landscape outside.
Sleek Steel Effect Folding Patio Doors Elevate the Modern ADU Design Aesthetic
Three customized steel effect folding patio doors define the living space, each aligned to respond to a different edge of the site. The largest, spanning nearly 20 feet wide and just under eight feet tall, opens directly onto the stone patio, allowing the main gathering area to extend fully into the landscape. Along the side of the living room, a smaller 10-foot-wide system introduces more light and ventilation, nearly creating an open corner condition if not for the structural post that supports the façade and roofline.
At the rear, a fourth ten-foot-wide system features a French door swing panel configuration that opens toward the courtyard, strengthening the design connection to the main residence. All steel effect folding patio doors were specified with a low-maintenance, water-rated Performance Sill to safeguard against inclement weather while providing a seamless, barrier-free transition to the outdoor patio.
Unique Customizations for Visual Appeal and a Steel Effect
Each folding patio door system is configured to open outward, maximizing usable floor space in the compact interior and allowing furniture placement to remain uninterrupted. By stacking outward, the steel effect folding patio doors, specified in a SE Classic Bronze powder coat, ensure every inch of the cottage is optimized. Simulated divided lites create a consistent rhythm across windows and doors, maintaining alignment with the traditional barn-inspired exterior.
In the bedroom, a three-panel, 10-foot-wide system mirrors these customizations, matching the steel effect divided-lite pattern and outward-opening configuration, extending the indoor-outdoor connection while preserving visual continuity throughout the ADU.
“The divided lites were crucial to the architectural vision, and while budget prohibited a steel and glass system, NanaWall Systems’ thin frames provide the open and airy feeling we hoped to attain,” says Cawse. “Simulated divided lites transition the thoroughly modern element of the glass walls to remain in harmony with the otherwise traditional palette.”
Matching Windows and Doors: Create a Cohesive Design Program
Alongside the larger openings in the living areas and bedroom, a smaller 3-foot-tall NanaWall tilt turn window was added to the bathroom. This window-sized NanaWall system perfectly matches the divided lite panels and sleek frames of the steel effect folding patio doors, creating a cohesive modern ADU design throughout. The compact opening provides ventilation and natural light, enhancing the spa-like atmosphere along with natural stone flooring. The matching glass lines and sleek profiles of the NanaWall Generation 4 comprehensive product line further unify visual consistency, allowing each system to fit into the architectural style seamlessly.
“This project had three bifold glass walls, a pair of double French doors with sidelites, and a single tilt turn window,” says architect Lauren Cawse. “Being able to work with a single manufacturer provided aesthetic cohesiveness and simplified coordination.”
Sustainability Where It Matters Most
New York weather can vary from hot 85-degree summers to cold 26-degree winters. Creating an efficient living space was a primary goal. To achieve this, the design included Timber HP-insulated walls and floors with a heat pump system for effective heating and cooling. Additionally, the steel effect folding patio doors and windows were specified with double-glazed panels to ensure a tight building envelope.
Indoor-Outdoor Living Spaces for Relaxing and Entertaining
In-house landscape designer Liz Pulver worked closely with the team to conceive open-air spaces that enhanced the connection between inside and outside. To the south end of the lot, the landscape transitions into an “enhanced meadow,” allowing the cottage to feel embedded within the surrounding fields rather than set apart from them. A circular pool was designed to mimic a natural pond with a modest footprint. Around it, a minimalist fence and sunken stone ha-ha wall offer discreet safety for young children.
Limited space due to existing infrastructure and zoning setbacks left only a small footprint for the swimming pool, prompting the designer to propose a circular form that maximized the usable swimming area. “We felt that the perfect way to integrate a pool into the property and to honor the landscape would be to treat the pool as a piece of art itself,” says Pulver. “The result is a beautiful round pool that serves as both a functional retreat and a sculptural moment.”
Final Thoughts: A Barn-Inspired Design for Contemporary Living
This modern ADU design skillfully combines modern features with the enduring charm of traditional barns. The outcome is a welcoming living space that stands out amid a stunning landscape. Natural materials that mimic the beauty of the outdoors, expansive steel effect folding patio doors that fill the space with fresh air and natural light, and a restrained interior design work together to create an inviting retreat for everyday living, throughout the seasons.
“When entering the site, the cottage feels as though it was always there,” says Cawse. “It achieves its two opposing goals by creating a feeling of intimacy and enclosure near the house while also functioning as a threshold to the expansive fields and views beyond.”
Explore how NanaWall folding patio doors elevate other ADU spaces in our inspiring project photo gallery!
Frequently Asked Questions (FAQs)
What is Slimline Steel Effect?
Steel Effect is a folding patio door design option that replicates the appearance of traditional steel-framed glass doors. It combines the look of steel with the performance benefits of aluminum, including energy efficiency, low maintenance, greater design flexibility, and lower cost.
How does a NanaWall Steel Effect aluminum system compare to traditional steel-framed glass doors?
NanaWall Slimline Steel Effect folding patio doors replicate the narrow frames of traditional steel doors with improved weather and thermal performance and easier operation. They are lighter, more corrosion-resistant, and feature a thermally broken design for better energy efficiency and lower long-term maintenance.
What are the benefits of Steel Effect folding glass walls?
Steel Effect folding glass walls deliver the narrow sightlines and grid patterns of traditional steel, combined with the performance and low maintenance of aluminum. The slimline steel effect option offers all the benefits of our Generation 4 product line, including the FourFold / SixFold floating panel set option and smooth operation with Gothic arch stainless steel rollers on a stainless steel track.
Can Slimline Steel Effect glass walls be customized?
Yes, these systems offer a high level of customization to suit different architectural styles, including simulated divided lites specified in various patterns, popular SE colors for a true steel effect look, and a contemporary glass stop option for a refined look. Contact your local NanaWall representative for additional options here.
How energy-efficient and weather-resistant are Slimline Steel Effect folding patio doors?
Steel effect folding systems are engineered for strong thermal and weather performance. Thermally broken frames and high-performance glazing help improve energy efficiency. Each NanaWall system has been independently tested for air, water, structural integrity, and forced entry with excellent results.

The homes in Heritage Hills in Chapel Hill, NC are representative of the popularity and explosive growth of American Home Ownership that occurred during the economic expansion that followed the end of WW II. They were designed and built to foster the benefits and sense of “community”, where families could come together and share theirs and their children’s lives. They are typically in very desirable locations within their larger communities, and remodeling them with modern amenities, increasing the performance and efficiency of them, and having them Green Certified (independent third-party verified) makes them extremely attractive to buyers, and helps to raise other property values within the neighborhood.
Green Certified Remodeled Homes offer significant value and advantage in the marketplace over similar homes in their area, which is especially important as a new, younger era of home buyers enter the market. Current trends suggest that younger (as well as many “seasoned”) homeowners are interested in smaller, more efficient (and thus affordable) homes situated closer to shopping, their work, entertainment opportunities, and access to the economic and environmental benefits of mass transit.
These older homes also offer an additional value that is continuing to gain visibility and appreciation in the market place. They were built from lumber from slower-growth trees (denser and harder wood), and as such offer superior structural support compared to the same home built using lumber from today’s faster-growing (softer and less-dense wood) trees.
Robin and Kent had lived in their 2-story Gambrel Roof home in Heritage Hills since 1994. The house was structurally sound, due in large part to the old-growth (and denser) yellow pine that was used in its framing. They loved the quiet neighborhood, its sense of community and amenities, and their home. It suited their life-style and needs; and they had decided that they would remain in the home. It was showing its age, and was in need of general repairs and maintenance, and its energy, water, and indoor air quality performance was continuing to increase their ongoing cost of ownership.
Robin loved the screen porch that looked out on their private and nicely landscaped back yard, but she wanted to be able to use it in the colder months of the year. She was unsatisfied with the kitchen and the mud room / laundry room, and the darkness of other living spaces. A previous water leak in the laundry room had resulted in a large patch of mold that had compromised flooring, wall board, and insulation and contributed to the homes reduced indoor air quality.
The home lacked insulation in the crawl, and inadequate insulation in the attic. The single HVAC unit had been replaced a few years earlier with a more efficient unit, but with a single programmable thermostat control on the first floor and aging and un-insulated ducting, the second floor was often over-heated in the summer months.
The original wood windows had begun to deteriorate and were drafty and inefficient, and the original wood-burning fireplace was an open conduit for escaping conditioned air as well as an inlet for wood-smoke smelling air being pulled into the home. The siding had been replaced a few years earlier with a cement-fiber product, but the exterior wood trim was compromised and beginning to look unsightly. Its original architecture had been altered over the years in ways that presented ongoing maintenance and durability issues, as well as disrupting the elegance of the original design.
Kent has worked for over 30 years in the Environmental Sciences field, and is considered to be a national expert in understanding the sources of, and human exposure to pollutants in indoor environments. He had always been very conscious and cautious about the effects on indoor air quality that the construction, furnishings, and products used in home had on him and his family.
Project Goals
Increase the performance of their home by improving energy efficiency by at least 40% and lowering their natural gas and electric utility costs.
Increase the performance of their home by reducing water usage by at least 40% and lowering the water utility costs.
Increase the comfort of their home that was being compromised by an inadequate HVAC design, inadequate insulation, inefficient and compromised wood windows, and copious air intrusions and drafts.
Improve the healthiness of the homes indoor air quality that was being compromised by an open wood-burning fireplace, and prior water intrusion that had allowed colonies of mold to thrive.
Create a new Kitchen, Family Room, Home Office, Mudroom, and Laundry Room that featured some of the latest designs and trends and harmonized with the rest of the homes charm.
Increase the usefulness and aesthetics of the screened porch by creating a warm and inviting semi-conditioned 3-Season Room that extended the times during the year that it was comfortable.
Introduce day-lighting into areas of the home that were dark and uninviting.
Brighten and harmonize all of the interior finishes.
Protect and restore the exterior of the home with superior-performing products and finishes.
Achieve Gold Level Green Home Certification in conformance with the ICC 700-2012 National Green Building Standards (NGBS).
Find the right local pro for your project

The homes in Heritage Hills in Chapel Hill, NC are representative of the popularity and explosive growth of American Home Ownership that occurred during the economic expansion that followed the end of WW II. They were designed and built to foster the benefits and sense of “community”, where families could come together and share theirs and their children’s lives. They are typically in very desirable locations within their larger communities, and remodeling them with modern amenities, increasing the performance and efficiency of them, and having them Green Certified (independent third-party verified) makes them extremely attractive to buyers, and helps to raise other property values within the neighborhood.
Green Certified Remodeled Homes offer significant value and advantage in the marketplace over similar homes in their area, which is especially important as a new, younger era of home buyers enter the market. Current trends suggest that younger (as well as many “seasoned”) homeowners are interested in smaller, more efficient (and thus affordable) homes situated closer to shopping, their work, entertainment opportunities, and access to the economic and environmental benefits of mass transit.
These older homes also offer an additional value that is continuing to gain visibility and appreciation in the market place. They were built from lumber from slower-growth trees (denser and harder wood), and as such offer superior structural support compared to the same home built using lumber from today’s faster-growing (softer and less-dense wood) trees.
Robin and Kent had lived in their 2-story Gambrel Roof home in Heritage Hills since 1994. The house was structurally sound, due in large part to the old-growth (and denser) yellow pine that was used in its framing. They loved the quiet neighborhood, its sense of community and amenities, and their home. It suited their life-style and needs; and they had decided that they would remain in the home. It was showing its age, and was in need of general repairs and maintenance, and its energy, water, and indoor air quality performance was continuing to increase their ongoing cost of ownership.
Robin loved the screen porch that looked out on their private and nicely landscaped back yard, but she wanted to be able to use it in the colder months of the year. She was unsatisfied with the kitchen and the mud room / laundry room, and the darkness of other living spaces. A previous water leak in the laundry room had resulted in a large patch of mold that had compromised flooring, wall board, and insulation and contributed to the homes reduced indoor air quality.
The home lacked insulation in the crawl, and inadequate insulation in the attic. The single HVAC unit had been replaced a few years earlier with a more efficient unit, but with a single programmable thermostat control on the first floor and aging and un-insulated ducting, the second floor was often over-heated in the summer months.
The original wood windows had begun to deteriorate and were drafty and inefficient, and the original wood-burning fireplace was an open conduit for escaping conditioned air as well as an inlet for wood-smoke smelling air being pulled into the home. The siding had been replaced a few years earlier with a cement-fiber product, but the exterior wood trim was compromised and beginning to look unsightly. Its original architecture had been altered over the years in ways that presented ongoing maintenance and durability issues, as well as disrupting the elegance of the original design.
Kent has worked for over 30 years in the Environmental Sciences field, and is considered to be a national expert in understanding the sources of, and human exposure to pollutants in indoor environments. He had always been very conscious and cautious about the effects on indoor air quality that the construction, furnishings, and products used in home had on him and his family.
Project Goals
Increase the performance of their home by improving energy efficiency by at least 40% and lowering their natural gas and electric utility costs.
Increase the performance of their home by reducing water usage by at least 40% and lowering the water utility costs.
Increase the comfort of their home that was being compromised by an inadequate HVAC design, inadequate insulation, inefficient and compromised wood windows, and copious air intrusions and drafts.
Improve the healthiness of the homes indoor air quality that was being compromised by an open wood-burning fireplace, and prior water intrusion that had allowed colonies of mold to thrive.
Create a new Kitchen, Family Room, Home Office, Mudroom, and Laundry Room that featured some of the latest designs and trends and harmonized with the rest of the homes charm.
Increase the usefulness and aesthetics of the screened porch by creating a warm and inviting semi-conditioned 3-Season Room that extended the times during the year that it was comfortable.
Introduce day-lighting into areas of the home that were dark and uninviting.
Brighten and harmonize all of the interior finishes.
Protect and restore the exterior of the home with superior-performing products and finishes.
Achieve Gold Level Green Home Certification in conformance with the ICC 700-2012 National Green Building Standards (NGBS).

At HPA, we bring the opulence of luxury materials to your bathroom with Tyvarian® wall surrounds. Designed to emulate the elegance of marble, granite, and travertine, our panels transform ordinary bathrooms into exquisite private sanctuaries. These handcrafted pieces, made in Utah, leverage high-definition imaging technology to lend them a tactile and realistic aesthetic.
Additional Features
In addition to the wall surrounds, Tyvarian offers a range of additional features to improve the functionality and aesthetics of your bathroom. These include:
Integrated Shampoo Shelves: As part of our wall surrounds, these shelves provide a handy space to store your bath essentials, such as shampoo and conditioner. This design not only keeps your shower area neat but also declutters it.
Comfortable Shower Seats: Our Tyvarian shower seats offer a comfortable spot to relax during your shower. They are especially useful for seniors or those with mobility concerns.
Tailored Trim Options: With our Pencil Trim and Mini Pencil Trim, you have the chance to further customize your bathroom. They can be used to harmonize the overall decor or to introduce an understated contrast, depending on your design preference.

The homes in Heritage Hills in Chapel Hill, NC are representative of the popularity and explosive growth of American Home Ownership that occurred during the economic expansion that followed the end of WW II. They were designed and built to foster the benefits and sense of “community”, where families could come together and share theirs and their children’s lives. They are typically in very desirable locations within their larger communities, and remodeling them with modern amenities, increasing the performance and efficiency of them, and having them Green Certified (independent third-party verified) makes them extremely attractive to buyers, and helps to raise other property values within the neighborhood.
Green Certified Remodeled Homes offer significant value and advantage in the marketplace over similar homes in their area, which is especially important as a new, younger era of home buyers enter the market. Current trends suggest that younger (as well as many “seasoned”) homeowners are interested in smaller, more efficient (and thus affordable) homes situated closer to shopping, their work, entertainment opportunities, and access to the economic and environmental benefits of mass transit.
These older homes also offer an additional value that is continuing to gain visibility and appreciation in the market place. They were built from lumber from slower-growth trees (denser and harder wood), and as such offer superior structural support compared to the same home built using lumber from today’s faster-growing (softer and less-dense wood) trees.
Robin and Kent had lived in their 2-story Gambrel Roof home in Heritage Hills since 1994. The house was structurally sound, due in large part to the old-growth (and denser) yellow pine that was used in its framing. They loved the quiet neighborhood, its sense of community and amenities, and their home. It suited their life-style and needs; and they had decided that they would remain in the home. It was showing its age, and was in need of general repairs and maintenance, and its energy, water, and indoor air quality performance was continuing to increase their ongoing cost of ownership.
Robin loved the screen porch that looked out on their private and nicely landscaped back yard, but she wanted to be able to use it in the colder months of the year. She was unsatisfied with the kitchen and the mud room / laundry room, and the darkness of other living spaces. A previous water leak in the laundry room had resulted in a large patch of mold that had compromised flooring, wall board, and insulation and contributed to the homes reduced indoor air quality.
The home lacked insulation in the crawl, and inadequate insulation in the attic. The single HVAC unit had been replaced a few years earlier with a more efficient unit, but with a single programmable thermostat control on the first floor and aging and un-insulated ducting, the second floor was often over-heated in the summer months.
The original wood windows had begun to deteriorate and were drafty and inefficient, and the original wood-burning fireplace was an open conduit for escaping conditioned air as well as an inlet for wood-smoke smelling air being pulled into the home. The siding had been replaced a few years earlier with a cement-fiber product, but the exterior wood trim was compromised and beginning to look unsightly. Its original architecture had been altered over the years in ways that presented ongoing maintenance and durability issues, as well as disrupting the elegance of the original design.
Kent has worked for over 30 years in the Environmental Sciences field, and is considered to be a national expert in understanding the sources of, and human exposure to pollutants in indoor environments. He had always been very conscious and cautious about the effects on indoor air quality that the construction, furnishings, and products used in home had on him and his family.
Project Goals
Increase the performance of their home by improving energy efficiency by at least 40% and lowering their natural gas and electric utility costs.
Increase the performance of their home by reducing water usage by at least 40% and lowering the water utility costs.
Increase the comfort of their home that was being compromised by an inadequate HVAC design, inadequate insulation, inefficient and compromised wood windows, and copious air intrusions and drafts.
Improve the healthiness of the homes indoor air quality that was being compromised by an open wood-burning fireplace, and prior water intrusion that had allowed colonies of mold to thrive.
Create a new Kitchen, Family Room, Home Office, Mudroom, and Laundry Room that featured some of the latest designs and trends and harmonized with the rest of the homes charm.
Increase the usefulness and aesthetics of the screened porch by creating a warm and inviting semi-conditioned 3-Season Room that extended the times during the year that it was comfortable.
Introduce day-lighting into areas of the home that were dark and uninviting.
Brighten and harmonize all of the interior finishes.
Protect and restore the exterior of the home with superior-performing products and finishes.
Achieve Gold Level Green Home Certification in conformance with the ICC 700-2012 National Green Building Standards (NGBS).

The homes in Heritage Hills in Chapel Hill, NC are representative of the popularity and explosive growth of American Home Ownership that occurred during the economic expansion that followed the end of WW II. They were designed and built to foster the benefits and sense of “community”, where families could come together and share theirs and their children’s lives. They are typically in very desirable locations within their larger communities, and remodeling them with modern amenities, increasing the performance and efficiency of them, and having them Green Certified (independent third-party verified) makes them extremely attractive to buyers, and helps to raise other property values within the neighborhood.
Green Certified Remodeled Homes offer significant value and advantage in the marketplace over similar homes in their area, which is especially important as a new, younger era of home buyers enter the market. Current trends suggest that younger (as well as many “seasoned”) homeowners are interested in smaller, more efficient (and thus affordable) homes situated closer to shopping, their work, entertainment opportunities, and access to the economic and environmental benefits of mass transit.
These older homes also offer an additional value that is continuing to gain visibility and appreciation in the market place. They were built from lumber from slower-growth trees (denser and harder wood), and as such offer superior structural support compared to the same home built using lumber from today’s faster-growing (softer and less-dense wood) trees.
Robin and Kent had lived in their 2-story Gambrel Roof home in Heritage Hills since 1994. The house was structurally sound, due in large part to the old-growth (and denser) yellow pine that was used in its framing. They loved the quiet neighborhood, its sense of community and amenities, and their home. It suited their life-style and needs; and they had decided that they would remain in the home. It was showing its age, and was in need of general repairs and maintenance, and its energy, water, and indoor air quality performance was continuing to increase their ongoing cost of ownership.
Robin loved the screen porch that looked out on their private and nicely landscaped back yard, but she wanted to be able to use it in the colder months of the year. She was unsatisfied with the kitchen and the mud room / laundry room, and the darkness of other living spaces. A previous water leak in the laundry room had resulted in a large patch of mold that had compromised flooring, wall board, and insulation and contributed to the homes reduced indoor air quality.
The home lacked insulation in the crawl, and inadequate insulation in the attic. The single HVAC unit had been replaced a few years earlier with a more efficient unit, but with a single programmable thermostat control on the first floor and aging and un-insulated ducting, the second floor was often over-heated in the summer months.
The original wood windows had begun to deteriorate and were drafty and inefficient, and the original wood-burning fireplace was an open conduit for escaping conditioned air as well as an inlet for wood-smoke smelling air being pulled into the home. The siding had been replaced a few years earlier with a cement-fiber product, but the exterior wood trim was compromised and beginning to look unsightly. Its original architecture had been altered over the years in ways that presented ongoing maintenance and durability issues, as well as disrupting the elegance of the original design.
Kent has worked for over 30 years in the Environmental Sciences field, and is considered to be a national expert in understanding the sources of, and human exposure to pollutants in indoor environments. He had always been very conscious and cautious about the effects on indoor air quality that the construction, furnishings, and products used in home had on him and his family.
Project Goals
Increase the performance of their home by improving energy efficiency by at least 40% and lowering their natural gas and electric utility costs.
Increase the performance of their home by reducing water usage by at least 40% and lowering the water utility costs.
Increase the comfort of their home that was being compromised by an inadequate HVAC design, inadequate insulation, inefficient and compromised wood windows, and copious air intrusions and drafts.
Improve the healthiness of the homes indoor air quality that was being compromised by an open wood-burning fireplace, and prior water intrusion that had allowed colonies of mold to thrive.
Create a new Kitchen, Family Room, Home Office, Mudroom, and Laundry Room that featured some of the latest designs and trends and harmonized with the rest of the homes charm.
Increase the usefulness and aesthetics of the screened porch by creating a warm and inviting semi-conditioned 3-Season Room that extended the times during the year that it was comfortable.
Introduce day-lighting into areas of the home that were dark and uninviting.
Brighten and harmonize all of the interior finishes.
Protect and restore the exterior of the home with superior-performing products and finishes.
Achieve Gold Level Green Home Certification in conformance with the ICC 700-2012 National Green Building Standards (NGBS).

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Inspiration for a large farmhouse medium tone wood floor kitchen remodel in Other

The homes in Heritage Hills in Chapel Hill, NC are representative of the popularity and explosive growth of American Home Ownership that occurred during the economic expansion that followed the end of WW II. They were designed and built to foster the benefits and sense of “community”, where families could come together and share theirs and their children’s lives. They are typically in very desirable locations within their larger communities, and remodeling them with modern amenities, increasing the performance and efficiency of them, and having them Green Certified (independent third-party verified) makes them extremely attractive to buyers, and helps to raise other property values within the neighborhood.
Green Certified Remodeled Homes offer significant value and advantage in the marketplace over similar homes in their area, which is especially important as a new, younger era of home buyers enter the market. Current trends suggest that younger (as well as many “seasoned”) homeowners are interested in smaller, more efficient (and thus affordable) homes situated closer to shopping, their work, entertainment opportunities, and access to the economic and environmental benefits of mass transit.
These older homes also offer an additional value that is continuing to gain visibility and appreciation in the market place. They were built from lumber from slower-growth trees (denser and harder wood), and as such offer superior structural support compared to the same home built using lumber from today’s faster-growing (softer and less-dense wood) trees.
Robin and Kent had lived in their 2-story Gambrel Roof home in Heritage Hills since 1994. The house was structurally sound, due in large part to the old-growth (and denser) yellow pine that was used in its framing. They loved the quiet neighborhood, its sense of community and amenities, and their home. It suited their life-style and needs; and they had decided that they would remain in the home. It was showing its age, and was in need of general repairs and maintenance, and its energy, water, and indoor air quality performance was continuing to increase their ongoing cost of ownership.
Robin loved the screen porch that looked out on their private and nicely landscaped back yard, but she wanted to be able to use it in the colder months of the year. She was unsatisfied with the kitchen and the mud room / laundry room, and the darkness of other living spaces. A previous water leak in the laundry room had resulted in a large patch of mold that had compromised flooring, wall board, and insulation and contributed to the homes reduced indoor air quality.
The home lacked insulation in the crawl, and inadequate insulation in the attic. The single HVAC unit had been replaced a few years earlier with a more efficient unit, but with a single programmable thermostat control on the first floor and aging and un-insulated ducting, the second floor was often over-heated in the summer months.
The original wood windows had begun to deteriorate and were drafty and inefficient, and the original wood-burning fireplace was an open conduit for escaping conditioned air as well as an inlet for wood-smoke smelling air being pulled into the home. The siding had been replaced a few years earlier with a cement-fiber product, but the exterior wood trim was compromised and beginning to look unsightly. Its original architecture had been altered over the years in ways that presented ongoing maintenance and durability issues, as well as disrupting the elegance of the original design.
Kent has worked for over 30 years in the Environmental Sciences field, and is considered to be a national expert in understanding the sources of, and human exposure to pollutants in indoor environments. He had always been very conscious and cautious about the effects on indoor air quality that the construction, furnishings, and products used in home had on him and his family.
Project Goals
Increase the performance of their home by improving energy efficiency by at least 40% and lowering their natural gas and electric utility costs.
Increase the performance of their home by reducing water usage by at least 40% and lowering the water utility costs.
Increase the comfort of their home that was being compromised by an inadequate HVAC design, inadequate insulation, inefficient and compromised wood windows, and copious air intrusions and drafts.
Improve the healthiness of the homes indoor air quality that was being compromised by an open wood-burning fireplace, and prior water intrusion that had allowed colonies of mold to thrive.
Create a new Kitchen, Family Room, Home Office, Mudroom, and Laundry Room that featured some of the latest designs and trends and harmonized with the rest of the homes charm.
Increase the usefulness and aesthetics of the screened porch by creating a warm and inviting semi-conditioned 3-Season Room that extended the times during the year that it was comfortable.
Introduce day-lighting into areas of the home that were dark and uninviting.
Brighten and harmonize all of the interior finishes.
Protect and restore the exterior of the home with superior-performing products and finishes.
Achieve Gold Level Green Home Certification in conformance with the ICC 700-2012 National Green Building Standards (NGBS).

Nestled in the lush landscape, a modern reinterpretation of a once-fallen barn now features a charming guest cottage with stylish details and contemporary amenities. Situated along a narrow lot in Germantown, New York, the cottage completes a cluster of existing buildings, forming an intimate courtyard on one side. Steel effect folding patio doors fully open the living areas to the expansive fields and the Catskill Mountains beyond.
The homeowners, a young family with parents living abroad, envisioned a cozy yet modern ADU for extended stays. Designed by Lauren Cawse, AIA, architect and partner at The Art of Building, the year-round retreat draws inspiration from traditional local barns while embracing a seamless indoor-outdoor connection.
Captivating Guest Cottage Design Enhances the Senses with Steel Effect Folding Patio Doors
The modern ADU design started with the site itself. Positioned between residential and commercial neighbors, the elongated property required a careful balance of privacy and openness. Architect Lauren Cawse approached the layout by redefining the existing house and garage as the east and west sides of an outdoor room, with the new cottage forming its southern boundary. This arrangement created a clear courtyard near the main residence while directing the 800-square-foot guest house toward the open meadow and the distant Catskill Mountains.
“The unique character of the site and its history inspired the architectural direction,” says Cawse. “The intent was to create a secondary structure in the compound in clear contrast to the modern farmhouse style of the house and garage.”
A Barn-Inspired Exterior Adds Visual Flair
The exterior envelope evokes a traditional barn with a simple gable shape, weathered wood siding, cedar shingles, and a foundation veneer made of local fieldstone. A large sliding barn door adds a complementary feature to the courtyard-facing side, creating a dynamic opening that maintains uninterrupted views through the cottage to the meadow beyond.
Steel effect folding patio doors surrounding the structure add a modern touch of transparency, and simulated divided lites allow the contemporary glass wall systems to harmonize with the traditional elements of the modern ADU design.
“The goal was to fully open the living areas to the outdoors, framing views to the meadows and mountains,” says Cawse. “The positioning of the NanaWall systems frames the views and, when open, dissolves the boundary between inside and out.”
Interior Design That Mirrors Nature’s Tranquility
Inside, the design program features a simple layout with one bedroom, a full bath, a kitchenette, and a living area with a wood-burning stove. The interior, a collaboration between The Art of Building and the homeowners, is defined by an understated palette and tactile materials that reflect the natural setting. Color is introduced through the framed glass views on all sides of the structure. Reclaimed timber collar ties span the ceiling overhead, while stone surfaces and naturally patinated metal accents add quiet texture throughout.
Custom hand-painted Delft tiles along the kitchen backsplash add personal detail, and terra cotta flooring in the bathroom brings warmth and old-world charm. Soaring ceilings and abundant daylight create a peaceful play of light and shadow, shifting subtly with the seasons and emphasizing the cottage’s connection to the natural landscape outside.
Sleek Steel Effect Folding Patio Doors Elevate the Modern ADU Design Aesthetic
Three customized steel effect folding patio doors define the living space, each aligned to respond to a different edge of the site. The largest, spanning nearly 20 feet wide and just under eight feet tall, opens directly onto the stone patio, allowing the main gathering area to extend fully into the landscape. Along the side of the living room, a smaller 10-foot-wide system introduces more light and ventilation, nearly creating an open corner condition if not for the structural post that supports the façade and roofline.
At the rear, a fourth ten-foot-wide system features a French door swing panel configuration that opens toward the courtyard, strengthening the design connection to the main residence. All steel effect folding patio doors were specified with a low-maintenance, water-rated Performance Sill to safeguard against inclement weather while providing a seamless, barrier-free transition to the outdoor patio.
Unique Customizations for Visual Appeal and a Steel Effect
Each folding patio door system is configured to open outward, maximizing usable floor space in the compact interior and allowing furniture placement to remain uninterrupted. By stacking outward, the steel effect folding patio doors, specified in a SE Classic Bronze powder coat, ensure every inch of the cottage is optimized. Simulated divided lites create a consistent rhythm across windows and doors, maintaining alignment with the traditional barn-inspired exterior.
In the bedroom, a three-panel, 10-foot-wide system mirrors these customizations, matching the steel effect divided-lite pattern and outward-opening configuration, extending the indoor-outdoor connection while preserving visual continuity throughout the ADU.
“The divided lites were crucial to the architectural vision, and while budget prohibited a steel and glass system, NanaWall Systems’ thin frames provide the open and airy feeling we hoped to attain,” says Cawse. “Simulated divided lites transition the thoroughly modern element of the glass walls to remain in harmony with the otherwise traditional palette.”
Matching Windows and Doors: Create a Cohesive Design Program
Alongside the larger openings in the living areas and bedroom, a smaller 3-foot-tall NanaWall tilt turn window was added to the bathroom. This window-sized NanaWall system perfectly matches the divided lite panels and sleek frames of the steel effect folding patio doors, creating a cohesive modern ADU design throughout. The compact opening provides ventilation and natural light, enhancing the spa-like atmosphere along with natural stone flooring. The matching glass lines and sleek profiles of the NanaWall Generation 4 comprehensive product line further unify visual consistency, allowing each system to fit into the architectural style seamlessly.
“This project had three bifold glass walls, a pair of double French doors with sidelites, and a single tilt turn window,” says architect Lauren Cawse. “Being able to work with a single manufacturer provided aesthetic cohesiveness and simplified coordination.”
Sustainability Where It Matters Most
New York weather can vary from hot 85-degree summers to cold 26-degree winters. Creating an efficient living space was a primary goal. To achieve this, the design included Timber HP-insulated walls and floors with a heat pump system for effective heating and cooling. Additionally, the steel effect folding patio doors and windows were specified with double-glazed panels to ensure a tight building envelope.
Indoor-Outdoor Living Spaces for Relaxing and Entertaining
In-house landscape designer Liz Pulver worked closely with the team to conceive open-air spaces that enhanced the connection between inside and outside. To the south end of the lot, the landscape transitions into an “enhanced meadow,” allowing the cottage to feel embedded within the surrounding fields rather than set apart from them. A circular pool was designed to mimic a natural pond with a modest footprint. Around it, a minimalist fence and sunken stone ha-ha wall offer discreet safety for young children.
Limited space due to existing infrastructure and zoning setbacks left only a small footprint for the swimming pool, prompting the designer to propose a circular form that maximized the usable swimming area. “We felt that the perfect way to integrate a pool into the property and to honor the landscape would be to treat the pool as a piece of art itself,” says Pulver. “The result is a beautiful round pool that serves as both a functional retreat and a sculptural moment.”
Final Thoughts: A Barn-Inspired Design for Contemporary Living
This modern ADU design skillfully combines modern features with the enduring charm of traditional barns. The outcome is a welcoming living space that stands out amid a stunning landscape. Natural materials that mimic the beauty of the outdoors, expansive steel effect folding patio doors that fill the space with fresh air and natural light, and a restrained interior design work together to create an inviting retreat for everyday living, throughout the seasons.
“When entering the site, the cottage feels as though it was always there,” says Cawse. “It achieves its two opposing goals by creating a feeling of intimacy and enclosure near the house while also functioning as a threshold to the expansive fields and views beyond.”
Explore how NanaWall folding patio doors elevate other ADU spaces in our inspiring project photo gallery!
Frequently Asked Questions (FAQs)
What is Slimline Steel Effect?
Steel Effect is a folding patio door design option that replicates the appearance of traditional steel-framed glass doors. It combines the look of steel with the performance benefits of aluminum, including energy efficiency, low maintenance, greater design flexibility, and lower cost.
How does a NanaWall Steel Effect aluminum system compare to traditional steel-framed glass doors?
NanaWall Slimline Steel Effect folding patio doors replicate the narrow frames of traditional steel doors with improved weather and thermal performance and easier operation. They are lighter, more corrosion-resistant, and feature a thermally broken design for better energy efficiency and lower long-term maintenance.
What are the benefits of Steel Effect folding glass walls?
Steel Effect folding glass walls deliver the narrow sightlines and grid patterns of traditional steel, combined with the performance and low maintenance of aluminum. The slimline steel effect option offers all the benefits of our Generation 4 product line, including the FourFold / SixFold floating panel set option and smooth operation with Gothic arch stainless steel rollers on a stainless steel track.
Can Slimline Steel Effect glass walls be customized?
Yes, these systems offer a high level of customization to suit different architectural styles, including simulated divided lites specified in various patterns, popular SE colors for a true steel effect look, and a contemporary glass stop option for a refined look. Contact your local NanaWall representative for additional options here.
How energy-efficient and weather-resistant are Slimline Steel Effect folding patio doors?
Steel effect folding systems are engineered for strong thermal and weather performance. Thermally broken frames and high-performance glazing help improve energy efficiency. Each NanaWall system has been independently tested for air, water, structural integrity, and forced entry with excellent results.

Nestled in the lush landscape, a modern reinterpretation of a once-fallen barn now features a charming guest cottage with stylish details and contemporary amenities. Situated along a narrow lot in Germantown, New York, the cottage completes a cluster of existing buildings, forming an intimate courtyard on one side. Steel effect folding patio doors fully open the living areas to the expansive fields and the Catskill Mountains beyond.
The homeowners, a young family with parents living abroad, envisioned a cozy yet modern ADU for extended stays. Designed by Lauren Cawse, AIA, architect and partner at The Art of Building, the year-round retreat draws inspiration from traditional local barns while embracing a seamless indoor-outdoor connection.
Captivating Guest Cottage Design Enhances the Senses with Steel Effect Folding Patio Doors
The modern ADU design started with the site itself. Positioned between residential and commercial neighbors, the elongated property required a careful balance of privacy and openness. Architect Lauren Cawse approached the layout by redefining the existing house and garage as the east and west sides of an outdoor room, with the new cottage forming its southern boundary. This arrangement created a clear courtyard near the main residence while directing the 800-square-foot guest house toward the open meadow and the distant Catskill Mountains.
“The unique character of the site and its history inspired the architectural direction,” says Cawse. “The intent was to create a secondary structure in the compound in clear contrast to the modern farmhouse style of the house and garage.”
A Barn-Inspired Exterior Adds Visual Flair
The exterior envelope evokes a traditional barn with a simple gable shape, weathered wood siding, cedar shingles, and a foundation veneer made of local fieldstone. A large sliding barn door adds a complementary feature to the courtyard-facing side, creating a dynamic opening that maintains uninterrupted views through the cottage to the meadow beyond.
Steel effect folding patio doors surrounding the structure add a modern touch of transparency, and simulated divided lites allow the contemporary glass wall systems to harmonize with the traditional elements of the modern ADU design.
“The goal was to fully open the living areas to the outdoors, framing views to the meadows and mountains,” says Cawse. “The positioning of the NanaWall systems frames the views and, when open, dissolves the boundary between inside and out.”
Interior Design That Mirrors Nature’s Tranquility
Inside, the design program features a simple layout with one bedroom, a full bath, a kitchenette, and a living area with a wood-burning stove. The interior, a collaboration between The Art of Building and the homeowners, is defined by an understated palette and tactile materials that reflect the natural setting. Color is introduced through the framed glass views on all sides of the structure. Reclaimed timber collar ties span the ceiling overhead, while stone surfaces and naturally patinated metal accents add quiet texture throughout.
Custom hand-painted Delft tiles along the kitchen backsplash add personal detail, and terra cotta flooring in the bathroom brings warmth and old-world charm. Soaring ceilings and abundant daylight create a peaceful play of light and shadow, shifting subtly with the seasons and emphasizing the cottage’s connection to the natural landscape outside.
Sleek Steel Effect Folding Patio Doors Elevate the Modern ADU Design Aesthetic
Three customized steel effect folding patio doors define the living space, each aligned to respond to a different edge of the site. The largest, spanning nearly 20 feet wide and just under eight feet tall, opens directly onto the stone patio, allowing the main gathering area to extend fully into the landscape. Along the side of the living room, a smaller 10-foot-wide system introduces more light and ventilation, nearly creating an open corner condition if not for the structural post that supports the façade and roofline.
At the rear, a fourth ten-foot-wide system features a French door swing panel configuration that opens toward the courtyard, strengthening the design connection to the main residence. All steel effect folding patio doors were specified with a low-maintenance, water-rated Performance Sill to safeguard against inclement weather while providing a seamless, barrier-free transition to the outdoor patio.
Unique Customizations for Visual Appeal and a Steel Effect
Each folding patio door system is configured to open outward, maximizing usable floor space in the compact interior and allowing furniture placement to remain uninterrupted. By stacking outward, the steel effect folding patio doors, specified in a SE Classic Bronze powder coat, ensure every inch of the cottage is optimized. Simulated divided lites create a consistent rhythm across windows and doors, maintaining alignment with the traditional barn-inspired exterior.
In the bedroom, a three-panel, 10-foot-wide system mirrors these customizations, matching the steel effect divided-lite pattern and outward-opening configuration, extending the indoor-outdoor connection while preserving visual continuity throughout the ADU.
“The divided lites were crucial to the architectural vision, and while budget prohibited a steel and glass system, NanaWall Systems’ thin frames provide the open and airy feeling we hoped to attain,” says Cawse. “Simulated divided lites transition the thoroughly modern element of the glass walls to remain in harmony with the otherwise traditional palette.”
Matching Windows and Doors: Create a Cohesive Design Program
Alongside the larger openings in the living areas and bedroom, a smaller 3-foot-tall NanaWall tilt turn window was added to the bathroom. This window-sized NanaWall system perfectly matches the divided lite panels and sleek frames of the steel effect folding patio doors, creating a cohesive modern ADU design throughout. The compact opening provides ventilation and natural light, enhancing the spa-like atmosphere along with natural stone flooring. The matching glass lines and sleek profiles of the NanaWall Generation 4 comprehensive product line further unify visual consistency, allowing each system to fit into the architectural style seamlessly.
“This project had three bifold glass walls, a pair of double French doors with sidelites, and a single tilt turn window,” says architect Lauren Cawse. “Being able to work with a single manufacturer provided aesthetic cohesiveness and simplified coordination.”
Sustainability Where It Matters Most
New York weather can vary from hot 85-degree summers to cold 26-degree winters. Creating an efficient living space was a primary goal. To achieve this, the design included Timber HP-insulated walls and floors with a heat pump system for effective heating and cooling. Additionally, the steel effect folding patio doors and windows were specified with double-glazed panels to ensure a tight building envelope.
Indoor-Outdoor Living Spaces for Relaxing and Entertaining
In-house landscape designer Liz Pulver worked closely with the team to conceive open-air spaces that enhanced the connection between inside and outside. To the south end of the lot, the landscape transitions into an “enhanced meadow,” allowing the cottage to feel embedded within the surrounding fields rather than set apart from them. A circular pool was designed to mimic a natural pond with a modest footprint. Around it, a minimalist fence and sunken stone ha-ha wall offer discreet safety for young children.
Limited space due to existing infrastructure and zoning setbacks left only a small footprint for the swimming pool, prompting the designer to propose a circular form that maximized the usable swimming area. “We felt that the perfect way to integrate a pool into the property and to honor the landscape would be to treat the pool as a piece of art itself,” says Pulver. “The result is a beautiful round pool that serves as both a functional retreat and a sculptural moment.”
Final Thoughts: A Barn-Inspired Design for Contemporary Living
This modern ADU design skillfully combines modern features with the enduring charm of traditional barns. The outcome is a welcoming living space that stands out amid a stunning landscape. Natural materials that mimic the beauty of the outdoors, expansive steel effect folding patio doors that fill the space with fresh air and natural light, and a restrained interior design work together to create an inviting retreat for everyday living, throughout the seasons.
“When entering the site, the cottage feels as though it was always there,” says Cawse. “It achieves its two opposing goals by creating a feeling of intimacy and enclosure near the house while also functioning as a threshold to the expansive fields and views beyond.”
Explore how NanaWall folding patio doors elevate other ADU spaces in our inspiring project photo gallery!
Frequently Asked Questions (FAQs)
What is Slimline Steel Effect?
Steel Effect is a folding patio door design option that replicates the appearance of traditional steel-framed glass doors. It combines the look of steel with the performance benefits of aluminum, including energy efficiency, low maintenance, greater design flexibility, and lower cost.
How does a NanaWall Steel Effect aluminum system compare to traditional steel-framed glass doors?
NanaWall Slimline Steel Effect folding patio doors replicate the narrow frames of traditional steel doors with improved weather and thermal performance and easier operation. They are lighter, more corrosion-resistant, and feature a thermally broken design for better energy efficiency and lower long-term maintenance.
What are the benefits of Steel Effect folding glass walls?
Steel Effect folding glass walls deliver the narrow sightlines and grid patterns of traditional steel, combined with the performance and low maintenance of aluminum. The slimline steel effect option offers all the benefits of our Generation 4 product line, including the FourFold / SixFold floating panel set option and smooth operation with Gothic arch stainless steel rollers on a stainless steel track.
Can Slimline Steel Effect glass walls be customized?
Yes, these systems offer a high level of customization to suit different architectural styles, including simulated divided lites specified in various patterns, popular SE colors for a true steel effect look, and a contemporary glass stop option for a refined look. Contact your local NanaWall representative for additional options here.
How energy-efficient and weather-resistant are Slimline Steel Effect folding patio doors?
Steel effect folding systems are engineered for strong thermal and weather performance. Thermally broken frames and high-performance glazing help improve energy efficiency. Each NanaWall system has been independently tested for air, water, structural integrity, and forced entry with excellent results.

Built a completely new bathroom in a basement including walls.
wide plant tile, Sheetrock, painting, plumbing, electrical, framing & finish carpently

Nestled in the lush landscape, a modern reinterpretation of a once-fallen barn now features a charming guest cottage with stylish details and contemporary amenities. Situated along a narrow lot in Germantown, New York, the cottage completes a cluster of existing buildings, forming an intimate courtyard on one side. Steel effect folding patio doors fully open the living areas to the expansive fields and the Catskill Mountains beyond.
The homeowners, a young family with parents living abroad, envisioned a cozy yet modern ADU for extended stays. Designed by Lauren Cawse, AIA, architect and partner at The Art of Building, the year-round retreat draws inspiration from traditional local barns while embracing a seamless indoor-outdoor connection.
Captivating Guest Cottage Design Enhances the Senses with Steel Effect Folding Patio Doors
The modern ADU design started with the site itself. Positioned between residential and commercial neighbors, the elongated property required a careful balance of privacy and openness. Architect Lauren Cawse approached the layout by redefining the existing house and garage as the east and west sides of an outdoor room, with the new cottage forming its southern boundary. This arrangement created a clear courtyard near the main residence while directing the 800-square-foot guest house toward the open meadow and the distant Catskill Mountains.
“The unique character of the site and its history inspired the architectural direction,” says Cawse. “The intent was to create a secondary structure in the compound in clear contrast to the modern farmhouse style of the house and garage.”
A Barn-Inspired Exterior Adds Visual Flair
The exterior envelope evokes a traditional barn with a simple gable shape, weathered wood siding, cedar shingles, and a foundation veneer made of local fieldstone. A large sliding barn door adds a complementary feature to the courtyard-facing side, creating a dynamic opening that maintains uninterrupted views through the cottage to the meadow beyond.
Steel effect folding patio doors surrounding the structure add a modern touch of transparency, and simulated divided lites allow the contemporary glass wall systems to harmonize with the traditional elements of the modern ADU design.
“The goal was to fully open the living areas to the outdoors, framing views to the meadows and mountains,” says Cawse. “The positioning of the NanaWall systems frames the views and, when open, dissolves the boundary between inside and out.”
Interior Design That Mirrors Nature’s Tranquility
Inside, the design program features a simple layout with one bedroom, a full bath, a kitchenette, and a living area with a wood-burning stove. The interior, a collaboration between The Art of Building and the homeowners, is defined by an understated palette and tactile materials that reflect the natural setting. Color is introduced through the framed glass views on all sides of the structure. Reclaimed timber collar ties span the ceiling overhead, while stone surfaces and naturally patinated metal accents add quiet texture throughout.
Custom hand-painted Delft tiles along the kitchen backsplash add personal detail, and terra cotta flooring in the bathroom brings warmth and old-world charm. Soaring ceilings and abundant daylight create a peaceful play of light and shadow, shifting subtly with the seasons and emphasizing the cottage’s connection to the natural landscape outside.
Sleek Steel Effect Folding Patio Doors Elevate the Modern ADU Design Aesthetic
Three customized steel effect folding patio doors define the living space, each aligned to respond to a different edge of the site. The largest, spanning nearly 20 feet wide and just under eight feet tall, opens directly onto the stone patio, allowing the main gathering area to extend fully into the landscape. Along the side of the living room, a smaller 10-foot-wide system introduces more light and ventilation, nearly creating an open corner condition if not for the structural post that supports the façade and roofline.
At the rear, a fourth ten-foot-wide system features a French door swing panel configuration that opens toward the courtyard, strengthening the design connection to the main residence. All steel effect folding patio doors were specified with a low-maintenance, water-rated Performance Sill to safeguard against inclement weather while providing a seamless, barrier-free transition to the outdoor patio.
Unique Customizations for Visual Appeal and a Steel Effect
Each folding patio door system is configured to open outward, maximizing usable floor space in the compact interior and allowing furniture placement to remain uninterrupted. By stacking outward, the steel effect folding patio doors, specified in a SE Classic Bronze powder coat, ensure every inch of the cottage is optimized. Simulated divided lites create a consistent rhythm across windows and doors, maintaining alignment with the traditional barn-inspired exterior.
In the bedroom, a three-panel, 10-foot-wide system mirrors these customizations, matching the steel effect divided-lite pattern and outward-opening configuration, extending the indoor-outdoor connection while preserving visual continuity throughout the ADU.
“The divided lites were crucial to the architectural vision, and while budget prohibited a steel and glass system, NanaWall Systems’ thin frames provide the open and airy feeling we hoped to attain,” says Cawse. “Simulated divided lites transition the thoroughly modern element of the glass walls to remain in harmony with the otherwise traditional palette.”
Matching Windows and Doors: Create a Cohesive Design Program
Alongside the larger openings in the living areas and bedroom, a smaller 3-foot-tall NanaWall tilt turn window was added to the bathroom. This window-sized NanaWall system perfectly matches the divided lite panels and sleek frames of the steel effect folding patio doors, creating a cohesive modern ADU design throughout. The compact opening provides ventilation and natural light, enhancing the spa-like atmosphere along with natural stone flooring. The matching glass lines and sleek profiles of the NanaWall Generation 4 comprehensive product line further unify visual consistency, allowing each system to fit into the architectural style seamlessly.
“This project had three bifold glass walls, a pair of double French doors with sidelites, and a single tilt turn window,” says architect Lauren Cawse. “Being able to work with a single manufacturer provided aesthetic cohesiveness and simplified coordination.”
Sustainability Where It Matters Most
New York weather can vary from hot 85-degree summers to cold 26-degree winters. Creating an efficient living space was a primary goal. To achieve this, the design included Timber HP-insulated walls and floors with a heat pump system for effective heating and cooling. Additionally, the steel effect folding patio doors and windows were specified with double-glazed panels to ensure a tight building envelope.
Indoor-Outdoor Living Spaces for Relaxing and Entertaining
In-house landscape designer Liz Pulver worked closely with the team to conceive open-air spaces that enhanced the connection between inside and outside. To the south end of the lot, the landscape transitions into an “enhanced meadow,” allowing the cottage to feel embedded within the surrounding fields rather than set apart from them. A circular pool was designed to mimic a natural pond with a modest footprint. Around it, a minimalist fence and sunken stone ha-ha wall offer discreet safety for young children.
Limited space due to existing infrastructure and zoning setbacks left only a small footprint for the swimming pool, prompting the designer to propose a circular form that maximized the usable swimming area. “We felt that the perfect way to integrate a pool into the property and to honor the landscape would be to treat the pool as a piece of art itself,” says Pulver. “The result is a beautiful round pool that serves as both a functional retreat and a sculptural moment.”
Final Thoughts: A Barn-Inspired Design for Contemporary Living
This modern ADU design skillfully combines modern features with the enduring charm of traditional barns. The outcome is a welcoming living space that stands out amid a stunning landscape. Natural materials that mimic the beauty of the outdoors, expansive steel effect folding patio doors that fill the space with fresh air and natural light, and a restrained interior design work together to create an inviting retreat for everyday living, throughout the seasons.
“When entering the site, the cottage feels as though it was always there,” says Cawse. “It achieves its two opposing goals by creating a feeling of intimacy and enclosure near the house while also functioning as a threshold to the expansive fields and views beyond.”
Explore how NanaWall folding patio doors elevate other ADU spaces in our inspiring project photo gallery!
Frequently Asked Questions (FAQs)
What is Slimline Steel Effect?
Steel Effect is a folding patio door design option that replicates the appearance of traditional steel-framed glass doors. It combines the look of steel with the performance benefits of aluminum, including energy efficiency, low maintenance, greater design flexibility, and lower cost.
How does a NanaWall Steel Effect aluminum system compare to traditional steel-framed glass doors?
NanaWall Slimline Steel Effect folding patio doors replicate the narrow frames of traditional steel doors with improved weather and thermal performance and easier operation. They are lighter, more corrosion-resistant, and feature a thermally broken design for better energy efficiency and lower long-term maintenance.
What are the benefits of Steel Effect folding glass walls?
Steel Effect folding glass walls deliver the narrow sightlines and grid patterns of traditional steel, combined with the performance and low maintenance of aluminum. The slimline steel effect option offers all the benefits of our Generation 4 product line, including the FourFold / SixFold floating panel set option and smooth operation with Gothic arch stainless steel rollers on a stainless steel track.
Can Slimline Steel Effect glass walls be customized?
Yes, these systems offer a high level of customization to suit different architectural styles, including simulated divided lites specified in various patterns, popular SE colors for a true steel effect look, and a contemporary glass stop option for a refined look. Contact your local NanaWall representative for additional options here.
How energy-efficient and weather-resistant are Slimline Steel Effect folding patio doors?
Steel effect folding systems are engineered for strong thermal and weather performance. Thermally broken frames and high-performance glazing help improve energy efficiency. Each NanaWall system has been independently tested for air, water, structural integrity, and forced entry with excellent results.

Sponsored
Columbus, OH
Structural Remodeling
Franklin County's Heavy Timber Specialists | Best of Houzz 2020!

This shower remodel was part of a room addition that enlarged the shower space. This allowed for a walk in shower and a large bathtub on a raised tub deck. The 7' tub sat on a granite deck. The same granite was also used on the shower bench and shampoo boxes. Travertine was used on the walls with a mosaic liner that complimented the colors. The shower floor used 4x4 tumbled stone tiles. The shampoo boxes were bordered with a single step trim.

Nestled in the lush landscape, a modern reinterpretation of a once-fallen barn now features a charming guest cottage with stylish details and contemporary amenities. Situated along a narrow lot in Germantown, New York, the cottage completes a cluster of existing buildings, forming an intimate courtyard on one side. Steel effect folding patio doors fully open the living areas to the expansive fields and the Catskill Mountains beyond.
The homeowners, a young family with parents living abroad, envisioned a cozy yet modern ADU for extended stays. Designed by Lauren Cawse, AIA, architect and partner at The Art of Building, the year-round retreat draws inspiration from traditional local barns while embracing a seamless indoor-outdoor connection.
Captivating Guest Cottage Design Enhances the Senses with Steel Effect Folding Patio Doors
The modern ADU design started with the site itself. Positioned between residential and commercial neighbors, the elongated property required a careful balance of privacy and openness. Architect Lauren Cawse approached the layout by redefining the existing house and garage as the east and west sides of an outdoor room, with the new cottage forming its southern boundary. This arrangement created a clear courtyard near the main residence while directing the 800-square-foot guest house toward the open meadow and the distant Catskill Mountains.
“The unique character of the site and its history inspired the architectural direction,” says Cawse. “The intent was to create a secondary structure in the compound in clear contrast to the modern farmhouse style of the house and garage.”
A Barn-Inspired Exterior Adds Visual Flair
The exterior envelope evokes a traditional barn with a simple gable shape, weathered wood siding, cedar shingles, and a foundation veneer made of local fieldstone. A large sliding barn door adds a complementary feature to the courtyard-facing side, creating a dynamic opening that maintains uninterrupted views through the cottage to the meadow beyond.
Steel effect folding patio doors surrounding the structure add a modern touch of transparency, and simulated divided lites allow the contemporary glass wall systems to harmonize with the traditional elements of the modern ADU design.
“The goal was to fully open the living areas to the outdoors, framing views to the meadows and mountains,” says Cawse. “The positioning of the NanaWall systems frames the views and, when open, dissolves the boundary between inside and out.”
Interior Design That Mirrors Nature’s Tranquility
Inside, the design program features a simple layout with one bedroom, a full bath, a kitchenette, and a living area with a wood-burning stove. The interior, a collaboration between The Art of Building and the homeowners, is defined by an understated palette and tactile materials that reflect the natural setting. Color is introduced through the framed glass views on all sides of the structure. Reclaimed timber collar ties span the ceiling overhead, while stone surfaces and naturally patinated metal accents add quiet texture throughout.
Custom hand-painted Delft tiles along the kitchen backsplash add personal detail, and terra cotta flooring in the bathroom brings warmth and old-world charm. Soaring ceilings and abundant daylight create a peaceful play of light and shadow, shifting subtly with the seasons and emphasizing the cottage’s connection to the natural landscape outside.
Sleek Steel Effect Folding Patio Doors Elevate the Modern ADU Design Aesthetic
Three customized steel effect folding patio doors define the living space, each aligned to respond to a different edge of the site. The largest, spanning nearly 20 feet wide and just under eight feet tall, opens directly onto the stone patio, allowing the main gathering area to extend fully into the landscape. Along the side of the living room, a smaller 10-foot-wide system introduces more light and ventilation, nearly creating an open corner condition if not for the structural post that supports the façade and roofline.
At the rear, a fourth ten-foot-wide system features a French door swing panel configuration that opens toward the courtyard, strengthening the design connection to the main residence. All steel effect folding patio doors were specified with a low-maintenance, water-rated Performance Sill to safeguard against inclement weather while providing a seamless, barrier-free transition to the outdoor patio.
Unique Customizations for Visual Appeal and a Steel Effect
Each folding patio door system is configured to open outward, maximizing usable floor space in the compact interior and allowing furniture placement to remain uninterrupted. By stacking outward, the steel effect folding patio doors, specified in a SE Classic Bronze powder coat, ensure every inch of the cottage is optimized. Simulated divided lites create a consistent rhythm across windows and doors, maintaining alignment with the traditional barn-inspired exterior.
In the bedroom, a three-panel, 10-foot-wide system mirrors these customizations, matching the steel effect divided-lite pattern and outward-opening configuration, extending the indoor-outdoor connection while preserving visual continuity throughout the ADU.
“The divided lites were crucial to the architectural vision, and while budget prohibited a steel and glass system, NanaWall Systems’ thin frames provide the open and airy feeling we hoped to attain,” says Cawse. “Simulated divided lites transition the thoroughly modern element of the glass walls to remain in harmony with the otherwise traditional palette.”
Matching Windows and Doors: Create a Cohesive Design Program
Alongside the larger openings in the living areas and bedroom, a smaller 3-foot-tall NanaWall tilt turn window was added to the bathroom. This window-sized NanaWall system perfectly matches the divided lite panels and sleek frames of the steel effect folding patio doors, creating a cohesive modern ADU design throughout. The compact opening provides ventilation and natural light, enhancing the spa-like atmosphere along with natural stone flooring. The matching glass lines and sleek profiles of the NanaWall Generation 4 comprehensive product line further unify visual consistency, allowing each system to fit into the architectural style seamlessly.
“This project had three bifold glass walls, a pair of double French doors with sidelites, and a single tilt turn window,” says architect Lauren Cawse. “Being able to work with a single manufacturer provided aesthetic cohesiveness and simplified coordination.”
Sustainability Where It Matters Most
New York weather can vary from hot 85-degree summers to cold 26-degree winters. Creating an efficient living space was a primary goal. To achieve this, the design included Timber HP-insulated walls and floors with a heat pump system for effective heating and cooling. Additionally, the steel effect folding patio doors and windows were specified with double-glazed panels to ensure a tight building envelope.
Indoor-Outdoor Living Spaces for Relaxing and Entertaining
In-house landscape designer Liz Pulver worked closely with the team to conceive open-air spaces that enhanced the connection between inside and outside. To the south end of the lot, the landscape transitions into an “enhanced meadow,” allowing the cottage to feel embedded within the surrounding fields rather than set apart from them. A circular pool was designed to mimic a natural pond with a modest footprint. Around it, a minimalist fence and sunken stone ha-ha wall offer discreet safety for young children.
Limited space due to existing infrastructure and zoning setbacks left only a small footprint for the swimming pool, prompting the designer to propose a circular form that maximized the usable swimming area. “We felt that the perfect way to integrate a pool into the property and to honor the landscape would be to treat the pool as a piece of art itself,” says Pulver. “The result is a beautiful round pool that serves as both a functional retreat and a sculptural moment.”
Final Thoughts: A Barn-Inspired Design for Contemporary Living
This modern ADU design skillfully combines modern features with the enduring charm of traditional barns. The outcome is a welcoming living space that stands out amid a stunning landscape. Natural materials that mimic the beauty of the outdoors, expansive steel effect folding patio doors that fill the space with fresh air and natural light, and a restrained interior design work together to create an inviting retreat for everyday living, throughout the seasons.
“When entering the site, the cottage feels as though it was always there,” says Cawse. “It achieves its two opposing goals by creating a feeling of intimacy and enclosure near the house while also functioning as a threshold to the expansive fields and views beyond.”
Explore how NanaWall folding patio doors elevate other ADU spaces in our inspiring project photo gallery!
Frequently Asked Questions (FAQs)
What is Slimline Steel Effect?
Steel Effect is a folding patio door design option that replicates the appearance of traditional steel-framed glass doors. It combines the look of steel with the performance benefits of aluminum, including energy efficiency, low maintenance, greater design flexibility, and lower cost.
How does a NanaWall Steel Effect aluminum system compare to traditional steel-framed glass doors?
NanaWall Slimline Steel Effect folding patio doors replicate the narrow frames of traditional steel doors with improved weather and thermal performance and easier operation. They are lighter, more corrosion-resistant, and feature a thermally broken design for better energy efficiency and lower long-term maintenance.
What are the benefits of Steel Effect folding glass walls?
Steel Effect folding glass walls deliver the narrow sightlines and grid patterns of traditional steel, combined with the performance and low maintenance of aluminum. The slimline steel effect option offers all the benefits of our Generation 4 product line, including the FourFold / SixFold floating panel set option and smooth operation with Gothic arch stainless steel rollers on a stainless steel track.
Can Slimline Steel Effect glass walls be customized?
Yes, these systems offer a high level of customization to suit different architectural styles, including simulated divided lites specified in various patterns, popular SE colors for a true steel effect look, and a contemporary glass stop option for a refined look. Contact your local NanaWall representative for additional options here.
How energy-efficient and weather-resistant are Slimline Steel Effect folding patio doors?
Steel effect folding systems are engineered for strong thermal and weather performance. Thermally broken frames and high-performance glazing help improve energy efficiency. Each NanaWall system has been independently tested for air, water, structural integrity, and forced entry with excellent results.

The homes in Heritage Hills in Chapel Hill, NC are representative of the popularity and explosive growth of American Home Ownership that occurred during the economic expansion that followed the end of WW II. They were designed and built to foster the benefits and sense of “community”, where families could come together and share theirs and their children’s lives. They are typically in very desirable locations within their larger communities, and remodeling them with modern amenities, increasing the performance and efficiency of them, and having them Green Certified (independent third-party verified) makes them extremely attractive to buyers, and helps to raise other property values within the neighborhood.
Green Certified Remodeled Homes offer significant value and advantage in the marketplace over similar homes in their area, which is especially important as a new, younger era of home buyers enter the market. Current trends suggest that younger (as well as many “seasoned”) homeowners are interested in smaller, more efficient (and thus affordable) homes situated closer to shopping, their work, entertainment opportunities, and access to the economic and environmental benefits of mass transit.
These older homes also offer an additional value that is continuing to gain visibility and appreciation in the market place. They were built from lumber from slower-growth trees (denser and harder wood), and as such offer superior structural support compared to the same home built using lumber from today’s faster-growing (softer and less-dense wood) trees.
Robin and Kent had lived in their 2-story Gambrel Roof home in Heritage Hills since 1994. The house was structurally sound, due in large part to the old-growth (and denser) yellow pine that was used in its framing. They loved the quiet neighborhood, its sense of community and amenities, and their home. It suited their life-style and needs; and they had decided that they would remain in the home. It was showing its age, and was in need of general repairs and maintenance, and its energy, water, and indoor air quality performance was continuing to increase their ongoing cost of ownership.
Robin loved the screen porch that looked out on their private and nicely landscaped back yard, but she wanted to be able to use it in the colder months of the year. She was unsatisfied with the kitchen and the mud room / laundry room, and the darkness of other living spaces. A previous water leak in the laundry room had resulted in a large patch of mold that had compromised flooring, wall board, and insulation and contributed to the homes reduced indoor air quality.
The home lacked insulation in the crawl, and inadequate insulation in the attic. The single HVAC unit had been replaced a few years earlier with a more efficient unit, but with a single programmable thermostat control on the first floor and aging and un-insulated ducting, the second floor was often over-heated in the summer months.
The original wood windows had begun to deteriorate and were drafty and inefficient, and the original wood-burning fireplace was an open conduit for escaping conditioned air as well as an inlet for wood-smoke smelling air being pulled into the home. The siding had been replaced a few years earlier with a cement-fiber product, but the exterior wood trim was compromised and beginning to look unsightly. Its original architecture had been altered over the years in ways that presented ongoing maintenance and durability issues, as well as disrupting the elegance of the original design.
Kent has worked for over 30 years in the Environmental Sciences field, and is considered to be a national expert in understanding the sources of, and human exposure to pollutants in indoor environments. He had always been very conscious and cautious about the effects on indoor air quality that the construction, furnishings, and products used in home had on him and his family.
Project Goals
Increase the performance of their home by improving energy efficiency by at least 40% and lowering their natural gas and electric utility costs.
Increase the performance of their home by reducing water usage by at least 40% and lowering the water utility costs.
Increase the comfort of their home that was being compromised by an inadequate HVAC design, inadequate insulation, inefficient and compromised wood windows, and copious air intrusions and drafts.
Improve the healthiness of the homes indoor air quality that was being compromised by an open wood-burning fireplace, and prior water intrusion that had allowed colonies of mold to thrive.
Create a new Kitchen, Family Room, Home Office, Mudroom, and Laundry Room that featured some of the latest designs and trends and harmonized with the rest of the homes charm.
Increase the usefulness and aesthetics of the screened porch by creating a warm and inviting semi-conditioned 3-Season Room that extended the times during the year that it was comfortable.
Introduce day-lighting into areas of the home that were dark and uninviting.
Brighten and harmonize all of the interior finishes.
Protect and restore the exterior of the home with superior-performing products and finishes.
Achieve Gold Level Green Home Certification in conformance with the ICC 700-2012 National Green Building Standards (NGBS).

Sponsored
Columbus, OH
Hope Restoration & General Contracting
Columbus Design-Build, Kitchen & Bath Remodeling, Historic Renovations

The homes in Heritage Hills in Chapel Hill, NC are representative of the popularity and explosive growth of American Home Ownership that occurred during the economic expansion that followed the end of WW II. They were designed and built to foster the benefits and sense of “community”, where families could come together and share theirs and their children’s lives. They are typically in very desirable locations within their larger communities, and remodeling them with modern amenities, increasing the performance and efficiency of them, and having them Green Certified (independent third-party verified) makes them extremely attractive to buyers, and helps to raise other property values within the neighborhood.
Green Certified Remodeled Homes offer significant value and advantage in the marketplace over similar homes in their area, which is especially important as a new, younger era of home buyers enter the market. Current trends suggest that younger (as well as many “seasoned”) homeowners are interested in smaller, more efficient (and thus affordable) homes situated closer to shopping, their work, entertainment opportunities, and access to the economic and environmental benefits of mass transit.
These older homes also offer an additional value that is continuing to gain visibility and appreciation in the market place. They were built from lumber from slower-growth trees (denser and harder wood), and as such offer superior structural support compared to the same home built using lumber from today’s faster-growing (softer and less-dense wood) trees.
Robin and Kent had lived in their 2-story Gambrel Roof home in Heritage Hills since 1994. The house was structurally sound, due in large part to the old-growth (and denser) yellow pine that was used in its framing. They loved the quiet neighborhood, its sense of community and amenities, and their home. It suited their life-style and needs; and they had decided that they would remain in the home. It was showing its age, and was in need of general repairs and maintenance, and its energy, water, and indoor air quality performance was continuing to increase their ongoing cost of ownership.
Robin loved the screen porch that looked out on their private and nicely landscaped back yard, but she wanted to be able to use it in the colder months of the year. She was unsatisfied with the kitchen and the mud room / laundry room, and the darkness of other living spaces. A previous water leak in the laundry room had resulted in a large patch of mold that had compromised flooring, wall board, and insulation and contributed to the homes reduced indoor air quality.
The home lacked insulation in the crawl, and inadequate insulation in the attic. The single HVAC unit had been replaced a few years earlier with a more efficient unit, but with a single programmable thermostat control on the first floor and aging and un-insulated ducting, the second floor was often over-heated in the summer months.
The original wood windows had begun to deteriorate and were drafty and inefficient, and the original wood-burning fireplace was an open conduit for escaping conditioned air as well as an inlet for wood-smoke smelling air being pulled into the home. The siding had been replaced a few years earlier with a cement-fiber product, but the exterior wood trim was compromised and beginning to look unsightly. Its original architecture had been altered over the years in ways that presented ongoing maintenance and durability issues, as well as disrupting the elegance of the original design.
Kent has worked for over 30 years in the Environmental Sciences field, and is considered to be a national expert in understanding the sources of, and human exposure to pollutants in indoor environments. He had always been very conscious and cautious about the effects on indoor air quality that the construction, furnishings, and products used in home had on him and his family.
Project Goals
Increase the performance of their home by improving energy efficiency by at least 40% and lowering their natural gas and electric utility costs.
Increase the performance of their home by reducing water usage by at least 40% and lowering the water utility costs.
Increase the comfort of their home that was being compromised by an inadequate HVAC design, inadequate insulation, inefficient and compromised wood windows, and copious air intrusions and drafts.
Improve the healthiness of the homes indoor air quality that was being compromised by an open wood-burning fireplace, and prior water intrusion that had allowed colonies of mold to thrive.
Create a new Kitchen, Family Room, Home Office, Mudroom, and Laundry Room that featured some of the latest designs and trends and harmonized with the rest of the homes charm.
Increase the usefulness and aesthetics of the screened porch by creating a warm and inviting semi-conditioned 3-Season Room that extended the times during the year that it was comfortable.
Introduce day-lighting into areas of the home that were dark and uninviting.
Brighten and harmonize all of the interior finishes.
Protect and restore the exterior of the home with superior-performing products and finishes.
Achieve Gold Level Green Home Certification in conformance with the ICC 700-2012 National Green Building Standards (NGBS).

This master bathroom remodel was completed during a room addition project. An additional 4' of depth was added on to enlarge the shower deeper.
Bathroom - large traditional master bathroom idea in Orange County with recessed-panel cabinets and medium tone wood cabinets
Bathroom - large traditional master bathroom idea in Orange County with recessed-panel cabinets and medium tone wood cabinets

Nestled in the lush landscape, a modern reinterpretation of a once-fallen barn now features a charming guest cottage with stylish details and contemporary amenities. Situated along a narrow lot in Germantown, New York, the cottage completes a cluster of existing buildings, forming an intimate courtyard on one side. Steel effect folding patio doors fully open the living areas to the expansive fields and the Catskill Mountains beyond.
The homeowners, a young family with parents living abroad, envisioned a cozy yet modern ADU for extended stays. Designed by Lauren Cawse, AIA, architect and partner at The Art of Building, the year-round retreat draws inspiration from traditional local barns while embracing a seamless indoor-outdoor connection.
Captivating Guest Cottage Design Enhances the Senses with Steel Effect Folding Patio Doors
The modern ADU design started with the site itself. Positioned between residential and commercial neighbors, the elongated property required a careful balance of privacy and openness. Architect Lauren Cawse approached the layout by redefining the existing house and garage as the east and west sides of an outdoor room, with the new cottage forming its southern boundary. This arrangement created a clear courtyard near the main residence while directing the 800-square-foot guest house toward the open meadow and the distant Catskill Mountains.
“The unique character of the site and its history inspired the architectural direction,” says Cawse. “The intent was to create a secondary structure in the compound in clear contrast to the modern farmhouse style of the house and garage.”
A Barn-Inspired Exterior Adds Visual Flair
The exterior envelope evokes a traditional barn with a simple gable shape, weathered wood siding, cedar shingles, and a foundation veneer made of local fieldstone. A large sliding barn door adds a complementary feature to the courtyard-facing side, creating a dynamic opening that maintains uninterrupted views through the cottage to the meadow beyond.
Steel effect folding patio doors surrounding the structure add a modern touch of transparency, and simulated divided lites allow the contemporary glass wall systems to harmonize with the traditional elements of the modern ADU design.
“The goal was to fully open the living areas to the outdoors, framing views to the meadows and mountains,” says Cawse. “The positioning of the NanaWall systems frames the views and, when open, dissolves the boundary between inside and out.”
Interior Design That Mirrors Nature’s Tranquility
Inside, the design program features a simple layout with one bedroom, a full bath, a kitchenette, and a living area with a wood-burning stove. The interior, a collaboration between The Art of Building and the homeowners, is defined by an understated palette and tactile materials that reflect the natural setting. Color is introduced through the framed glass views on all sides of the structure. Reclaimed timber collar ties span the ceiling overhead, while stone surfaces and naturally patinated metal accents add quiet texture throughout.
Custom hand-painted Delft tiles along the kitchen backsplash add personal detail, and terra cotta flooring in the bathroom brings warmth and old-world charm. Soaring ceilings and abundant daylight create a peaceful play of light and shadow, shifting subtly with the seasons and emphasizing the cottage’s connection to the natural landscape outside.
Sleek Steel Effect Folding Patio Doors Elevate the Modern ADU Design Aesthetic
Three customized steel effect folding patio doors define the living space, each aligned to respond to a different edge of the site. The largest, spanning nearly 20 feet wide and just under eight feet tall, opens directly onto the stone patio, allowing the main gathering area to extend fully into the landscape. Along the side of the living room, a smaller 10-foot-wide system introduces more light and ventilation, nearly creating an open corner condition if not for the structural post that supports the façade and roofline.
At the rear, a fourth ten-foot-wide system features a French door swing panel configuration that opens toward the courtyard, strengthening the design connection to the main residence. All steel effect folding patio doors were specified with a low-maintenance, water-rated Performance Sill to safeguard against inclement weather while providing a seamless, barrier-free transition to the outdoor patio.
Unique Customizations for Visual Appeal and a Steel Effect
Each folding patio door system is configured to open outward, maximizing usable floor space in the compact interior and allowing furniture placement to remain uninterrupted. By stacking outward, the steel effect folding patio doors, specified in a SE Classic Bronze powder coat, ensure every inch of the cottage is optimized. Simulated divided lites create a consistent rhythm across windows and doors, maintaining alignment with the traditional barn-inspired exterior.
In the bedroom, a three-panel, 10-foot-wide system mirrors these customizations, matching the steel effect divided-lite pattern and outward-opening configuration, extending the indoor-outdoor connection while preserving visual continuity throughout the ADU.
“The divided lites were crucial to the architectural vision, and while budget prohibited a steel and glass system, NanaWall Systems’ thin frames provide the open and airy feeling we hoped to attain,” says Cawse. “Simulated divided lites transition the thoroughly modern element of the glass walls to remain in harmony with the otherwise traditional palette.”
Matching Windows and Doors: Create a Cohesive Design Program
Alongside the larger openings in the living areas and bedroom, a smaller 3-foot-tall NanaWall tilt turn window was added to the bathroom. This window-sized NanaWall system perfectly matches the divided lite panels and sleek frames of the steel effect folding patio doors, creating a cohesive modern ADU design throughout. The compact opening provides ventilation and natural light, enhancing the spa-like atmosphere along with natural stone flooring. The matching glass lines and sleek profiles of the NanaWall Generation 4 comprehensive product line further unify visual consistency, allowing each system to fit into the architectural style seamlessly.
“This project had three bifold glass walls, a pair of double French doors with sidelites, and a single tilt turn window,” says architect Lauren Cawse. “Being able to work with a single manufacturer provided aesthetic cohesiveness and simplified coordination.”
Sustainability Where It Matters Most
New York weather can vary from hot 85-degree summers to cold 26-degree winters. Creating an efficient living space was a primary goal. To achieve this, the design included Timber HP-insulated walls and floors with a heat pump system for effective heating and cooling. Additionally, the steel effect folding patio doors and windows were specified with double-glazed panels to ensure a tight building envelope.
Indoor-Outdoor Living Spaces for Relaxing and Entertaining
In-house landscape designer Liz Pulver worked closely with the team to conceive open-air spaces that enhanced the connection between inside and outside. To the south end of the lot, the landscape transitions into an “enhanced meadow,” allowing the cottage to feel embedded within the surrounding fields rather than set apart from them. A circular pool was designed to mimic a natural pond with a modest footprint. Around it, a minimalist fence and sunken stone ha-ha wall offer discreet safety for young children.
Limited space due to existing infrastructure and zoning setbacks left only a small footprint for the swimming pool, prompting the designer to propose a circular form that maximized the usable swimming area. “We felt that the perfect way to integrate a pool into the property and to honor the landscape would be to treat the pool as a piece of art itself,” says Pulver. “The result is a beautiful round pool that serves as both a functional retreat and a sculptural moment.”
Final Thoughts: A Barn-Inspired Design for Contemporary Living
This modern ADU design skillfully combines modern features with the enduring charm of traditional barns. The outcome is a welcoming living space that stands out amid a stunning landscape. Natural materials that mimic the beauty of the outdoors, expansive steel effect folding patio doors that fill the space with fresh air and natural light, and a restrained interior design work together to create an inviting retreat for everyday living, throughout the seasons.
“When entering the site, the cottage feels as though it was always there,” says Cawse. “It achieves its two opposing goals by creating a feeling of intimacy and enclosure near the house while also functioning as a threshold to the expansive fields and views beyond.”
Explore how NanaWall folding patio doors elevate other ADU spaces in our inspiring project photo gallery!
Frequently Asked Questions (FAQs)
What is Slimline Steel Effect?
Steel Effect is a folding patio door design option that replicates the appearance of traditional steel-framed glass doors. It combines the look of steel with the performance benefits of aluminum, including energy efficiency, low maintenance, greater design flexibility, and lower cost.
How does a NanaWall Steel Effect aluminum system compare to traditional steel-framed glass doors?
NanaWall Slimline Steel Effect folding patio doors replicate the narrow frames of traditional steel doors with improved weather and thermal performance and easier operation. They are lighter, more corrosion-resistant, and feature a thermally broken design for better energy efficiency and lower long-term maintenance.
What are the benefits of Steel Effect folding glass walls?
Steel Effect folding glass walls deliver the narrow sightlines and grid patterns of traditional steel, combined with the performance and low maintenance of aluminum. The slimline steel effect option offers all the benefits of our Generation 4 product line, including the FourFold / SixFold floating panel set option and smooth operation with Gothic arch stainless steel rollers on a stainless steel track.
Can Slimline Steel Effect glass walls be customized?
Yes, these systems offer a high level of customization to suit different architectural styles, including simulated divided lites specified in various patterns, popular SE colors for a true steel effect look, and a contemporary glass stop option for a refined look. Contact your local NanaWall representative for additional options here.
How energy-efficient and weather-resistant are Slimline Steel Effect folding patio doors?
Steel effect folding systems are engineered for strong thermal and weather performance. Thermally broken frames and high-performance glazing help improve energy efficiency. Each NanaWall system has been independently tested for air, water, structural integrity, and forced entry with excellent results.
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