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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.

Mike and Anne of Barrington Hills desperately needed to update and renovate both their kid’s hall bath and guest bath, and in their 1980’s home each project presented a different set of unique challenges to overcome. When they set out to identify the right remodeling company to partner with, it was important to find a company that could help them to visualize design solutions for the bath renovations. When they came across Advance Design Studio’s website, they were immediately drawn to the solution-oriented remodeling process and the family friendly company.
They say they chose Advance Design because of the integrated approach of “Common Sense Remodeling”, making the design, project management and construction all happen in one place. When they met with Project Designer Michelle Lecinski, they knew they chose the right company. “Michelle’s excellent work on the initial designs made it easy to proceed with Advance Design Studio,” Mike said.
Like most homeowners anticipating a big renovation project, they had some healthy fears; with two bathrooms being remodeled at the same time they worried about timeframes and staying within budget. With the help of Michelle, and the “Common Sense” guidelines, they were confident that Advance Design would stay true, orchestrating all the moving parts to stay within both the estimated timeline and budget.
The guest bath offered the biggest design challenge. A dormer obstruction made the already cramped shower awkward to access. Mike and Anne also wanted the shower size to be expanded, making it more accommodating. Working with Advance’s construction expert DJ Yurik, Michelle relocated the shower concealing the original dormer and creating a larger, more comfortable and aesthetically pleasing guest shower.
The unsightly and not at all user-friendly closet was removed and replaced with elegant White Maple Dura Supreme cabinetry with much improved function featuring dual tall linen cabinets, a special makeup area and two sinks, providing a dual vanity which was extremely important for better guest use.
The Fossil Brown quartz countertop is in pleasing contrast to the white cabinetry, and coordinates nicely with the mocha porcelain tile gracing the shower for an accent. The decorative glazed turquoise tile backsplash, tile border, and bottle niche adds a taste of marine green to the room, while marble-looking porcelain tile makes guests feel they are staying in a 5-star hotel. Polished nickel Kohler plumbing fixtures were chosen to add a touch of sophistication. This renovated guest bath is comfortable and elegant, and Anne and Mike’s house guests may never want to leave!
“The end result was updated and restyled bathrooms that the client will enjoy and increase the value of their home,” Designer Michelle said.
The children’s hall bath had its own set of challenges. The current placement of the sink was not conducive to the best use of the existing space, nor did it allow for any visual interest, something Advance’s designers always work to achieve even within the tight confines of a small bath. Advance removed the linen closet and used the gain in wall space to create a dramatic focal point on the vanity wall. They also took additional space that wasn’t being used for new Storm Gray Dura Supreme tall built-in linen cabinets, creating functional storage space that the former bath lacked. A customized glass splash panel was created for the bath, and the high ceilings with skylights were accented with a custom-made track lighting fixture featuring industrial pipe and cage materials.
Authentic cement encaustic tile was used wall to wall surrounding the vanity to create a dramatic and interesting back drop for the new elegant and stately furniture-like double sink wall. Hand-made encaustic tile originated in Western Europe beginning in the 1850’s and reminded Mike and Anne of tile they had seen and loved from their travels overseas. Today, encaustic tile has made a re-appearance in today’s modern bath design with its wide array of appealing patterns and artistic use of color.
Oil rubbed bronze Kohler fixtures echo the black accents in the beautiful tile pattern and reflect the matte black of the unique lighting detail. Easy to maintain Blanca Arabescato Quartz countertops add practicality and natural beauty and compliments the warm wood porcelain tile floors. This handsome bath has generated praise from friends and family even before it’s complete unveiling as photos of the space leaked out on social media! It’s not only completely functional to use, but especially pretty to look at.
“Advance Design Studio did a terrific job for us. We really appreciated how easy it was to work with them on a complex project of the complete remodeling of two bathrooms. They very capably handled all the details from design, to project management, to construction. It is a great group of people to work with and we would welcome the opportunity to work with them again anytime,” Mike said.

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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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.

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.

Sponsored
Columbus, OH
Snider & Metcalf Interior Design, LTD
Leading Interior Designers in Columbus, Ohio & Ponte Vedra, Florida

This bedroom and full bathroom are part of an adventuresome project my wife and I embarked upon to create a complete apartment in the basement of our townhouse. We designed a floor plan that creatively and efficiently used all of the 385-square-foot-space, without sacrificing beauty, comfort or function – and all without breaking the bank! To maximize our budget, we did the work ourselves and added everything from thrift store finds to DIY wall art to bring it all together.
A partial double closet bar adds a little extra space while still leaving room for longer hanging clothes.

Timmerman Photography
Sculpture by Mayme Kratz
This is a home we initially built in 1995 and after it sold in 2014 we were commissioned to come back and remodel the interior of the home.
We worked with internationally renowned architect Will Bruder on the initial design on the home. The goal of home was to build a modern hillside home which made the most of the vista upon which it sat. A few ways we were able to achieve this were the unique, floor-to-ceiling glass windows on the side of the property overlooking Scottsdale, a private courtyard off the master bedroom and bathroom, and a custom commissioned sculpture Mayme Kratz.
Stonecreek's particular role in the project were to work alongside both the clients and the architect to make sure we were able to perfectly execute on the vision and design of the project. A very unique component of this house is how truly custom every feature is, all the way from the window systems and the bathtubs all the way down to the door handles and other features.

**I. Spatial Composition & Architectural Volume**
This vignette operates as a masterclass in the choreography of compressed urban space, deploying a classic enfilade strategy to extract depth from a modest footprint. The composition is organized around a cased opening — flanked by heavy, mitered pilaster-style jambs and a substantial crown-capped header — that frames the kitchen beyond like a proscenium, establishing a telescoping sightline from the foreground banquette nook through to the range wall and its marble backsplash. The immediate volume is a canted, faceted room; the angled corner walls and the polygonal ceiling perimeter generate a subtle rotational geometry that is echoed, with deliberate rhyme, in the octagonal tabletop and its faceted plinth base. Architectural discipline is supplied by comprehensive millwork: recessed applied-molding wall panels calibrated to the wall heights, a built-in bibliothèque with adjustable shelving and integrated media niche on the left, and a bench base detailed as cabinetry with a plinth and reveal, so the seating reads as architecture rather than furniture. The crowning gesture is a stone-clad soffit and cove above the multi-part cornice, which visually lifts the ceiling plane and dissolves the corner conditions of the canted plan into a continuous, luminous band.
**II. Materiality, Color & Texture**
The palette is a study in low-chroma tonal layering, structured on a base of dove-grey lacquered joinery whose cool, faintly greige undertone reads as both patrician and contemporary. Against this, book-matched white marble with grey and taupe veining appears in three registers — the ceiling cove, the kitchen backsplash, and the honed tabletop — creating a vertical and horizontal continuity of stone that binds the two rooms into one material narrative. Underfoot, wide-plank white oak laid in a herringbone pattern is finished in a wire-brushed, cerused grey-brown, its open grain supplying essential tactility and directional energy that counteracts the smoothness of the cabinetry. The tonal reserve is punctured by a single decisive chromatic move: the oxblood-to-cognac aniline leather banquette, its capitonné-adjacent piping and channeled seat cushion delivering saturated warmth and a supple, patinating counterpoint to the cool minerals. Metals are deliberately stratified — brushed stainless on the appliance suite, polished nickel on the cabinet hardware and pendant collars, and a high-mirror chromed column and base on the table that pulls reflected fragments of the room into itself. Textile relief arrives through a heather-grey wool bolster and the woven, honeycomb-textured sconce shades, while the sunflowers and pantry provisions behind glazed muntin doors introduce a curated, humanizing note of the quotidian.
**III. Lighting, Atmosphere & Style Profile**
The lighting scheme is layered and hierarchical. Ambient illumination is borrowed rather than direct: the kitchen functions as a light well, its own concealed under-cabinet lighting and cove-washed ceiling projecting a cool, diffuse glow forward through the cased opening, so the brighter volume beyond reads as both destination and light source. In the foreground, symmetrically paired wall sconces with textured drum shades cast a warm, amber-filtered ellipse of light onto the paneling — providing intimate, low-level modeling that emphasizes the millwork's shadow lines and flatters the leather's depth. The kitchen's aligned trio of spun-metal dome pendants, with polished collars and diffused lenses, reinforce the axial perspective and supply task-appropriate downlight, while the marble cove above serves as an indirect reflector, softening any residual harshness. The cumulative atmosphere is hushed, refined, and slightly cinematic — a quiet formality more contemplative than performative. Stylistically, the project synthesizes into a form of Transitional Classicism, or more precisely a tailored American Neoclassicism recalibrated for contemporary living: the vocabulary of paneled millwork, crown profiles, and cased openings is retained, but stripped of ornament, flattened in profile, and rendered in a monochrome envelope, then energized by faceted geometries, mirror-finish metal, and a single confident stroke of leather. It is restraint deployed as luxury.

Wavy mother of pearl porcelain tile, wavy white tile for bathroom shower or backsplash. Perfect for fireplace or accent wall
Example of a trendy bathroom design in Los Angeles
Example of a trendy bathroom design in Los Angeles

Sponsored
Columbus, OH
Snider & Metcalf Interior Design, LTD
Leading Interior Designers in Columbus, Ohio & Ponte Vedra, Florida

Budget Blinds blackout roller shades, photo credit installer Adam Brannick
Example of a mid-sized transitional guest bedroom design in Cedar Rapids with gray walls and no fireplace
Example of a mid-sized transitional guest bedroom design in Cedar Rapids with gray walls and no fireplace

Ask a kitchen designer in Chicago which countertop question comes up most and you will hear the same answer: white or off-white quartz, and which shade. Homeowners walk into showrooms with a photo saved on their phone, usually a bright, veined slab from a magazine spread, and leave an hour later realizing there are a dozen versions of that same look. The confusion is not about taste. It is about the fact that "white quartz" covers a huge range of patterns, undertones, and price points, and nobody explains the differences before the sale.
Older bungalows and newer builds alike are getting stripped of their dated laminate and butcher block in favor of quartz, and the reasons are practical rather than trendy. Quartz does not need sealing, resists the kind of staining that granite can suffer over decades, and holds up to the freeze-thaw humidity swings that Chicago basements and kitchens go through every year. Once a homeowner commits to quartz, though, the real decision starts: which white, and does the pattern justify the difference in cost.
This piece walks through three specific slabs that keep showing up in Chicago renovation projects, why designers reach for them in different rooms, and what actually separates a flat white surface from one with real depth. None of this requires a design background to follow. It is mostly about paying attention to how a slab behaves under kitchen lighting, how busy the vending gets, and how it photographs versus how it looks in person.
Why White Quartz Took Over Chicago Kitchens
Ten years ago, granite dominated Chicago kitchen remodels almost by default. It was durable, it looked expensive, and every fabricator in the metro area carried a wide range of colors. Quartz has since taken over that position, and the shift happened faster than most contractors expected. Engineered stone gave homeowners a more predictable surface, since natural granite varies slab to slab while quartz is manufactured to a consistent pattern batch after batch.
The other driver is light. Chicago winters are long and gray, and a lot of kitchens, especially in older two-flats and courtyard buildings, do not get much direct sun. A dark granite countertop in a dim kitchen can make the whole room feel smaller. White and light-toned quartz reflects what little natural light comes through the windows, and it makes a galley kitchen or a north-facing space feel noticeably brighter without touching the cabinetry or the layout.
There is also a resale argument that local real estate agents bring up constantly. White quartz photographs well for listings, reads as updated and low-maintenance to buyers touring in person, and does not compete visually with whatever cabinet color the next owner might prefer. It is a safer bet than a bold veined marble look or a colored quartz that might feel dated in five years.
Arctic White and the Cost Question
Among the flatter, more uniform whites, arctic white quartz price comes up constantly in budget conversations because the slab sits at a more approachable point than the heavily veined Italian-marble-inspired patterns. It reads as clean and bright without the busy movement that some homeowners find overwhelming in a small kitchen. Fabricators in the Chicago area tend to keep it in stock precisely because demand stays steady across both new construction and remodel projects.
Part of what keeps this slab affordable relative to its heavily patterned cousins comes down to manufacturing complexity. A quartz surface with minimal veining and a consistent white base is simpler to produce at scale than one that mimics the irregular, high-contrast movement of natural Calacatta marble. That production difference shows up directly in what a homeowner pays per square foot, and it is worth asking a fabricator to walk through that pricing before assuming every white quartz costs the same.
Homeowners planning a full kitchen, including an island, backsplash, and perimeter counters, often use a flatter white like this specifically because it lets other elements carry the visual interest. A patterned tile backsplash or a bold cabinet color reads more clearly against a calm countertop than against one already fighting for attention with heavy veining. Designers frequently pair simpler whites with statement lighting fixtures for exactly this reason.
What Makes Calacatta Patterns Different
Calacatta refers to a family of marble originally quarried in Italy, known for a bright white background broken up by bold, often gold-toned veining that moves in thick, dramatic streaks rather than thin gray lines. Natural Calacatta marble is soft, porous, and expensive to maintain, which is exactly why quartz manufacturers spent years developing engineered versions that replicate the look without the upkeep headaches.
The challenge with any Calacatta-style quartz is getting the veining to look organic instead of printed. Early generations of engineered stone struggled with repetitive patterns that gave away the fact the slab was manufactured rather than cut from actual marble. Modern digital printing and layering techniques have closed that gap considerably, and the better Calacatta-inspired quartz lines now vary the veining across each slab batch so two counters in the same kitchen do not look identical.
Chicago designers gravitate toward Calacatta patterns for kitchens that function as the visual centerpiece of an open floor plan, which describes a large share of the gut renovations happening in neighborhoods like Lincoln Park, Roscoe Village, and the North Shore suburbs. When the kitchen island is visible from the living room and dining area, a dramatic veined surface becomes part of the home's overall design language rather than a purely functional work surface.
Calacatta Arno Under Kitchen Lighting
One of the more popular options in this category, calacatta arno quartz, balances a warm white base with soft gray and gold veining that avoids looking too stark under the cooler LED lighting common in newer Chicago builds. Homeowners touring showrooms sometimes make the mistake of judging a slab entirely under warm incandescent lighting, then get surprised when the same surface looks slightly different once installed under their kitchen's actual fixtures.
What separates this particular pattern from flatter competitors is how the veining clusters rather than spreading evenly across the slab. That clustering mimics the way real quarried marble forms, with denser mineral deposits in some sections and cleaner stretches in others. Fabricators cutting a large island slab from a single piece will often orient the pattern intentionally so the busiest veining lands somewhere visually interesting rather than getting cut off at an edge.
Because the background reads warmer than a stark white, this pattern tends to pair well with brass or matte gold hardware, a combination that has been showing up repeatedly in Chicago kitchen remodels over the past few renovation seasons. Cabinet painters report a similar trend, with more clients requesting warm white or greige cabinet colors specifically because they complement this kind of veined quartz better than a cooler, blue-toned white would.
Silestone's Version of the Calacatta Look
Manufacturers compete directly in this Calacatta-inspired category, and silestone eternal calacatta gold represents one brand's specific take on the pattern, distinguished by richer gold veining set against a brighter white base than some competing slabs in the same family. Silestone has built a reputation around anti-bacterial surface treatments in addition to the standard quartz durability, a detail some homeowners specifically ask about for kitchens used heavily by families with young children.
The veining in this particular slab tends to run in longer, more continuous lines compared to the clustered pattern found in some other Calacatta-style options, which gives large island surfaces a sense of visual flow from one end to the other. Fabricators working with bigger islands, the kind increasingly common in open-concept Chicago remodels, often favor patterns like this because there is less need to worry about seams interrupting a busy, disconnected pattern.
Price positioning for this slab tends to sit toward the upper end of the engineered quartz category, reflecting both the brand's manufacturing process and the complexity of replicating that continuous gold veining consistently across production batches. Homeowners weighing this option against other Calacatta-style quartz should ask their fabricator directly about batch availability, since premium patterns sometimes have longer lead times than standard stock colors.
Living With Quartz Day to Day
Beyond how a slab looks in a showroom or a listing photo, the daily experience of owning quartz countertops matters more once the renovation dust settles. Quartz resists scratching far better than laminate and holds up to the acidic spills, hot pans, and general abuse of an active kitchen without the sealing maintenance that natural stone requires every year or two. That low-maintenance reputation is a large part of why quartz overtook granite in the first place.
Heat resistance is a detail that gets less attention than it should. While quartz handles moderate heat well, manufacturers generally recommend using a trivet or pad for very hot pots straight off the stove, since sudden temperature shock can occasionally cause stress marks in the resin binder that holds the engineered stone together. This is a minor precaution rather than a major limitation, but it is worth mentioning to anyone assuming quartz is entirely indestructible.
Cleaning routines stay simple across almost every pattern in this category. A damp cloth and mild soap handle daily messes, and the nonporous surface means wine, coffee, and tomato-based sauces do not soak in the way they can with unsealed granite or marble. Homeowners moving from an older stone counter often mention how much less they worry about everyday spills once quartz is installed, which is a quality-of-life change that rarely makes it into the initial design conversation.
Choosing Between the Three
There is no single correct answer among these three slabs, and that is exactly why they keep coming up together in the same design conversations across Chicago renovation projects. A flatter white with minimal veining suits kitchens where other elements need to carry the visual interest, while a bolder Calacatta-inspired pattern makes sense when the countertop itself is meant to be the centerpiece of an open floor plan.
Budget matters too, and it is worth having a direct conversation with a fabricator about where each option lands before falling in love with a specific slab in a showroom. Lighting, cabinet color, and how the kitchen connects to the rest of the home all play into which pattern will actually look right once installation is finished rather than just in a photo.
Whatever direction a homeowner leans, seeing a full slab in person under actual kitchen lighting remains the single most useful step before signing off. Photos only go so far once the countertop is sitting in the room it will live in for years.

maple hardwood floor, water-popped, and stained with 50% rosewood and 50% neutral stains.
Inspiration for a timeless medium tone wood floor living room remodel in Salt Lake City
Inspiration for a timeless medium tone wood floor living room remodel in Salt Lake City

## Spatial Composition & Architectural Volume
This is a kitchen conceived less as a service zone than as a precisely calibrated architectural volume, resolved through an L-configuration of full-height cabinetry that terminates against a monolithic island set on an intentional diagonal to the orthogonal grid of the herringbone flooring. The island's waterfall treatment — a slab returning to the floor in a single unbroken plane — functions as both a peninsular counter and a piece of quasi-sculptural infrastructure, its overhang generating a shallow banquette-adjacent seating zone without resorting to a conventional breakfast bar. Above, a coffered soffit executed in flush drywall with a continuous cove-lit reveal establishes a datum line that both compresses and defines the working core, while the adjacent tray ceiling reads as a distinct volume, spatially decoupling the kitchen from the living room beyond. That threshold is the composition's most disciplined gesture: a wide cased opening framed in mitered rift-cut oak paneling, its architrave articulated as a shadow-gapped reveal rather than applied trim, drawing a deep enfilade sightline through to the window wall, its Roman shades, and the mid-rise cityscape beyond. Millwork here performs structurally as well as visually — the oak-clad pilasters and the fluted, hand-carved textural panel at right operate as pseudo-columnar elements, organizing the plan into legible bays.
## Materiality, Color & Texture
The palette is constructed on a deliberate dialectic between two wood registers. The envelope employs a pale, quarter-sawn white oak with a honeyed, faintly amber undertone, its figure suppressed and its finish matte, functioning as a luminous neutral ground. Against this, the cabinetry deploys a deeply fumed or ebonized ash — likely a heavily lacquered, open-grain veneer — where the cathedral figuring is exaggerated into near-graphic striation and the high-gloss sheen produces a lacquered, almost Art Deco lustre. This contrast of value (blonde against bitter chocolate) and of sheen (matte against specular) is the project's principal tension. Mediating between them is the stone: a white quartzite or dolomitic marble with soft grey-taupe veining and a distinctly warm, cream-adjacent field, book-matched across the full-height backsplash and repeated on the island slab, its subtly honed surface refusing the glare of a polished finish. Metallic accents are restrained and consistently warm — satin brass on the pendant canopies and stool footrails, blackened bronze on the hardware, glazing frames, and the stools' slender tubular frames. Textiles introduce a low-frequency counterpoint: nubby bouclé upholstery on the sectional, a striated woven sheer at left, ikat-patterned cushions, and a tonal blue-grey geometric rug that supplies the only chromatic departure from the room's ochre-to-espresso spectrum.
## Lighting, Atmosphere & Style Profile
The lighting scheme is layered with unusual rigor. Daylight is admitted obliquely, filtered through the plaid-toned Roman shades of the adjacent living room, so the kitchen receives it secondhand — soft, directional, and already warmed. Artificial light works in three tiers: the recessed cove uplighting that grazes the soffit and dissolves the ceiling's edges; concealed under-cabinet illumination that renders the stone backsplash as a glowing plane; and the pair of spun-brass disc pendants suspended on slender blackened stems, whose downward-facing diffusers deliver a controlled pool of task light while their polished undersides register as small suns in the composition. The absence of visible downlight clutter is notable and disciplined. The resulting atmosphere is enveloping and low-glare — cosseting rather than clinical — with a distinctly residential, almost salon-like decorum reinforced by the framed genre painting hung casually on the oak paneling, a curatorial gesture that domesticates the kitchen decisively. Stylistically, the project reads as **Warm Modernist Luxe**, drawing on the vocabulary of high-craft European cabinetry and mid-century Milanese interiors: the grain-forward veneers, brass discs, and slender bronze seating carry a whisper of 1970s Italian sophistication, while the flush detailing, shadow-gap reveals, and rigorous suppression of ornament situate it firmly in contemporary practice. It is tailored rather than austere — a demonstration that minimalist discipline and material sensuality need not be adversaries.

Mid-sized elegant carpeted straight staircase photo in New York with carpeted risers
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