Search results for "Perform perfectly" in Home Design Ideas

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.
Find the right local pro for your project

Alyssa Kirsten
Open concept kitchen - small contemporary u-shaped light wood floor open concept kitchen idea in New York with an undermount sink, flat-panel cabinets, gray cabinets, quartz countertops, white backsplash, stone tile backsplash, stainless steel appliances and no island
Open concept kitchen - small contemporary u-shaped light wood floor open concept kitchen idea in New York with an undermount sink, flat-panel cabinets, gray cabinets, quartz countertops, white backsplash, stone tile backsplash, stainless steel appliances and no island

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.

Inspiration for a transitional medium tone wood floor, brown floor and vaulted ceiling living room remodel in San Francisco with white walls and a standard fireplace

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Columbus, OH
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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.

We transformed this room from an outdated southwest style space to this elegant Spanish style living room. The fireplace was redesigned and an arched passage to the dining was added to better define the spaces. The balance of materials that help create this space are the old world terra cotta tiles, smooth plaster walls, hand carved stone fireplace and rough wood stained ceiling.
Furniture, decorative lighting and accessories by Irma Shaw Designs.

Suburban kitchen remodel for a crisp urban farmhouse look. Photo: Lauren Rubinstein
Example of a transitional u-shaped eat-in kitchen design in Atlanta with a farmhouse sink, shaker cabinets, white cabinets, white backsplash, subway tile backsplash, stainless steel appliances and granite countertops
Example of a transitional u-shaped eat-in kitchen design in Atlanta with a farmhouse sink, shaker cabinets, white cabinets, white backsplash, subway tile backsplash, stainless steel appliances and granite countertops

Jennifer and Dan have lived in their Deer Park Illinois home for 15 years, slowly making minor fixes like painting and decorating; but they had a new plan for their kitchen the entire time. An awkwardly placed garage door, and an island cooktop with a terrible downdraft made a full-scale kitchen remodel an absolute must. Jennifer had many ideas in mind and wanted to work with a company that could provide high-end work, while partnering with a designer that would tailor the kitchen to her ideas.
She was intrigued by the phrase “Common Sense Remodeling” in Advance Design’s feature she discovered while perusing an issue of the community’s Quintessential Barrington Magazine. Doing further research on the company’s website, as she looked through project profiles and read about Advance Design’s “Common Sense Remodeling” philosophy, she promptly scheduled an appointment to see if the people and ideas she read about were truly who they said they were. The more she read, the more she knew that the “Common Sense” approach to remodeling they described was exactly the type of company she was looking for.
The partnership was sealed after an initial consultation with Owner Todd Jurs and Project Designer Michelle Lecinski. They displayed a combination of friendliness, professionalism and respect that was unmatched by any of the other companies Jennifer talked to. She knew that with Advance Design, she would be able to retain the vision that she had in mind with high-quality craftsmanship.
“I reached out to Advance Design because of the ‘Common Sense Remodeling’ tagline,” Jennifer said. “That’s what lingered for me”. “Advance Design was the most respectful- of the house and of my design ideas, and the most professional of the handful of companies that looked at my project”.
Soon after the meeting Jennifer began working with Michelle on the project design. They quickly developed chemistry. Jennifer loved how Michelle researched and located every detail that Jennifer wanted for the kitchen. Between the two of them, every concept and idea was worked through and perfected. “Jennifer had definite ideas about what she wanted the new kitchen to look like, she just didn’t know how to bring it all together. We worked together really well to make her ideas into the practical reality necessary for a well-functioning kitchen, with the look and feel that she had envisioned”, says Michelle.
“Michelle was wonderful in using the CAD system she would show me new drawings every time we changed the layout while working through the design,” Jennifer said. “She was a really wonderful partner in execution, she made sure everything happened quickly and easily.”
The finished design drew out elements of Jennifer’s style and personality. The pair call the look “sophisticated farmhouse” to describe the kitchen renovation to family and friends. The result was a beautifully crafted, authentic-feeling space that satisfied Jennifer’s dreams 15 years in the making. The whole project consisted of a kitchen remodel, mudroom upgrade with powder room, and garage entry relocation. “The projects I personally like the best, are the ones that put the client’s dreams on display,” Project Designer Michelle said. “And this is one of those projects.”
The main focal point of the kitchen is custom zinc and brass ventilation hood with a vintage sheen, which was hand made to order by a small company in Indiana named Vogler Metalworking. “It’s like sculpture, a true work of art”, says Jennifer. Your eye is immediately drawn towards this elegant yet practical hood that eliminated the home’s downdraft problem and added a striking conversation piece at the same time. The carpenters had to use special gloves when transporting and installing it, so they didn’t smudge it with fingerprints. The beautiful hood centers proudly over the stunning black enamel and brass LaCornue Range. “I had a friend who had a LaCornue range and after learning how easy it was to cook perfect meals, I was convinced I wanted to have one”, says Jennifer. This unique, breathtaking combination anchors the entire kitchen and is apparent immediately as you walk into the great room the surrounds the space.
DuraSupreme Crestwood cabinets with a Kendall Panel add function and sophistication. A custom gray paint color paired with a storm blue was developed so that the new kitchen looked like it belonged to the existing space. Unlacquered brass faucets and hardware were important to Jennifer because she wanted the living finishes to age over time. Remarkable brass diamond mesh cabinet door inserts imported from the UK continue to add this one-of-a-kind kitchen renovation; giving it a “you won’t see this everywhere” quality. The use of old railcar flooring for the coffee bar countertop and reclaimed oak for the open shelving gives an authenticity to the space uncommon in kitchens today.
Jennifer and Michelle fell in love with the Limestone Grey Stone while they were investigating unique island countertop ideas. They liked the fact that the limestone as a living finish will age and change over time. Calcutta Miel Quartz countertops made for an excellent pairing around the perimeter, as it’s durable and perfect for cooking preparations. A textured white subway tile backsplash that runs to the ceiling keeps your eye moving towards the open shelving, and to the main focal point of the stunning range hood combination.
“The kitchen functions beautifully, and it’s gorgeous,” beams Jennifer as she gestures with both hands while smiling ear to ear. “The most important thing was I wanted a kitchen that had a wonderful flow, cooked beautiful meals and was a great gathering place for family and friends, and this space does that perfectly! Beauty wise, it turned out exactly how I had envisioned. I felt the function part was the hardest part, and that was nailed”!
Relocating the garage entry to the new mudroom was a huge priority and has finally separated the family’s arriving home functions from their kitchen. Now coats and shoes and bags have their own area for dropping once members arrive home. Matching gray DuraSupreme cabinetry helped create gorgeous, purposeful lockers for the family. A reclaimed vintage sink and custom wall paper were added to the tiny powder room to beautify the once previously only functional space. Advance Design was even able to create a custom space for their dog to sleep while the family is away.
“It was unbelievable that a project of this size was completed in such a short time, and I think that’s because of the large amount of planning and preparation that went into it,” Jennifer marveled, “When we started, we were ready, and everything was prepared”.
When it came to execution, Project Manager Justin Davis and his crew were quick, accessible, and organized. Projects like this kitchen are typically completed in as little as 8-10 weeks. Jennifer’s kitchen however despite the relocation of some challenging HVAC in a soffit and moving of an exterior door was completed remarkably fast in part because the team was working with an existing tile floor that ran throughout the first floor that the client really loved.
“You get to know these people really well because they’re living in your house while you’re living in your house. They were so fast and really good, it didn’t take as long as even planned” reported Jennifer. “I would text Justin and he always responded almost immediately. I got to know all the guys who were working in our house and they were all wonderful people”.
Details in a customized kitchen like this one require skill and care from the people who install it. “All the guys on the job were skilled at what the did. I wanted small details like little feet to look like furniture, that is where their carpentry skill came in to make these all perfect”, said Jennifer. “The tile guys were wonderful. They even let me determine how I wanted the texture with the grout to appear for a salt and pepper look; now that is a very skilled trade person making it custom”.
In Jennifer’s interview, she continued to reference Advance Design’s “Common Sense Remodeling”, so I took a minute to ask her exactly what that phrase meant to her and how it played out in her experience with her project and the Advance Design team. Here is what she said: “I was intrigued about Common Sense Remodeling and in my head that there would be clear costs and prices, great communication between the design team, the execution team and me”, said Jennifer. They did deliver on that, it was so clear about the cost breakdown, what I could expect from everyone who came to my house, and everything that we had ordered. That to me is the Common Sense”!
It’s great to see a client take literally our assertion that a well-planned remodeling project is simply “Common Sense”! She anticipated each step of the way would be clear, concise, and predictable, all the while protecting the outcome due to the careful upfront planning. “Advance Design delivered on their ‘Common Sense Remodeling’ promise,” Jennifer said. “From the design team, to the execution team - everything was straight forward like I imagined. The project turned out exactly how I envisioned, I enjoyed this process and absolutely would recommend Advance Design Studio to anyone.”

This renovated brick rowhome in Boston’s South End offers a modern aesthetic within a historic structure, creative use of space, exceptional thermal comfort, a reduced carbon footprint, and a passive stream of income.
DESIGN PRIORITIES. The goals for the project were clear - design the primary unit to accommodate the family’s modern lifestyle, rework the layout to create a desirable rental unit, improve thermal comfort and introduce a modern aesthetic. We designed the street-level entry as a shared entrance for both the primary and rental unit. The family uses it as their everyday entrance - we planned for bike storage and an open mudroom with bench and shoe storage to facilitate the change from shoes to slippers or bare feet as they enter their home. On the main level, we expanded the kitchen into the dining room to create an eat-in space with generous counter space and storage, as well as a comfortable connection to the living space. The second floor serves as master suite for the couple - a bedroom with a walk-in-closet and ensuite bathroom, and an adjacent study, with refinished original pumpkin pine floors. The upper floor, aside from a guest bedroom, is the child's domain with interconnected spaces for sleeping, work and play. In the play space, which can be separated from the work space with new translucent sliding doors, we incorporated recreational features inspired by adventurous and competitive television shows, at their son’s request.
MODERN MEETS TRADITIONAL. We left the historic front facade of the building largely unchanged - the security bars were removed from the windows and the single pane windows were replaced with higher performing historic replicas. We designed the interior and rear facade with a vision of warm modernism, weaving in the notable period features. Each element was either restored or reinterpreted to blend with the modern aesthetic. The detailed ceiling in the living space, for example, has a new matte monochromatic finish, and the wood stairs are covered in a dark grey floor paint, whereas the mahogany doors were simply refinished. New wide plank wood flooring with a neutral finish, floor-to-ceiling casework, and bold splashes of color in wall paint and tile, and oversized high-performance windows (on the rear facade) round out the modern aesthetic.
RENTAL INCOME. The existing rowhome was zoned for a 2-family dwelling but included an undesirable, single-floor studio apartment at the garden level with low ceiling heights and questionable emergency egress. In order to increase the quality and quantity of space in the rental unit, we reimagined it as a two-floor, 1 or 2 bedroom, 2 bathroom apartment with a modern aesthetic, increased ceiling height on the lowest level and provided an in-unit washer/dryer. The apartment was listed with Jackie O'Connor Real Estate and rented immediately, providing the owners with a source of passive income.
ENCLOSURE WITH BENEFITS. The homeowners sought a minimal carbon footprint, enabled by their urban location and lifestyle decisions, paired with the benefits of a high-performance home. The extent of the renovation allowed us to implement a deep energy retrofit (DER) to address air tightness, insulation, and high-performance windows. The historic front facade is insulated from the interior, while the rear facade is insulated on the exterior. Together with these building enclosure improvements, we designed an HVAC system comprised of continuous fresh air ventilation, and an efficient, all-electric heating and cooling system to decouple the house from natural gas. This strategy provides optimal thermal comfort and indoor air quality, improved acoustic isolation from street noise and neighbors, as well as a further reduced carbon footprint. We also took measures to prepare the roof for future solar panels, for when the South End neighborhood’s aging electrical infrastructure is upgraded to allow them.
URBAN LIVING. The desirable neighborhood location allows the both the homeowners and tenant to walk, bike, and use public transportation to access the city, while each charging their respective plug-in electric cars behind the building to travel greater distances.
OVERALL. The understated rowhouse is now ready for another century of urban living, offering the owners comfort and convenience as they live life as an expression of their values.
Photography Eric Roth Photo

This gourmet kitchen includes wood burning pizza oven, grill, side burner, egg smoker, sink, refrigerator, trash chute, serving station and more!
Photography: Daniel Driensky

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Columbus, OH
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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.

This renovated brick rowhome in Boston’s South End offers a modern aesthetic within a historic structure, creative use of space, exceptional thermal comfort, a reduced carbon footprint, and a passive stream of income.
DESIGN PRIORITIES. The goals for the project were clear - design the primary unit to accommodate the family’s modern lifestyle, rework the layout to create a desirable rental unit, improve thermal comfort and introduce a modern aesthetic. We designed the street-level entry as a shared entrance for both the primary and rental unit. The family uses it as their everyday entrance - we planned for bike storage and an open mudroom with bench and shoe storage to facilitate the change from shoes to slippers or bare feet as they enter their home. On the main level, we expanded the kitchen into the dining room to create an eat-in space with generous counter space and storage, as well as a comfortable connection to the living space. The second floor serves as master suite for the couple - a bedroom with a walk-in-closet and ensuite bathroom, and an adjacent study, with refinished original pumpkin pine floors. The upper floor, aside from a guest bedroom, is the child's domain with interconnected spaces for sleeping, work and play. In the play space, which can be separated from the work space with new translucent sliding doors, we incorporated recreational features inspired by adventurous and competitive television shows, at their son’s request.
MODERN MEETS TRADITIONAL. We left the historic front facade of the building largely unchanged - the security bars were removed from the windows and the single pane windows were replaced with higher performing historic replicas. We designed the interior and rear facade with a vision of warm modernism, weaving in the notable period features. Each element was either restored or reinterpreted to blend with the modern aesthetic. The detailed ceiling in the living space, for example, has a new matte monochromatic finish, and the wood stairs are covered in a dark grey floor paint, whereas the mahogany doors were simply refinished. New wide plank wood flooring with a neutral finish, floor-to-ceiling casework, and bold splashes of color in wall paint and tile, and oversized high-performance windows (on the rear facade) round out the modern aesthetic.
RENTAL INCOME. The existing rowhome was zoned for a 2-family dwelling but included an undesirable, single-floor studio apartment at the garden level with low ceiling heights and questionable emergency egress. In order to increase the quality and quantity of space in the rental unit, we reimagined it as a two-floor, 1 or 2 bedroom, 2 bathroom apartment with a modern aesthetic, increased ceiling height on the lowest level and provided an in-unit washer/dryer. The apartment was listed with Jackie O'Connor Real Estate and rented immediately, providing the owners with a source of passive income.
ENCLOSURE WITH BENEFITS. The homeowners sought a minimal carbon footprint, enabled by their urban location and lifestyle decisions, paired with the benefits of a high-performance home. The extent of the renovation allowed us to implement a deep energy retrofit (DER) to address air tightness, insulation, and high-performance windows. The historic front facade is insulated from the interior, while the rear facade is insulated on the exterior. Together with these building enclosure improvements, we designed an HVAC system comprised of continuous fresh air ventilation, and an efficient, all-electric heating and cooling system to decouple the house from natural gas. This strategy provides optimal thermal comfort and indoor air quality, improved acoustic isolation from street noise and neighbors, as well as a further reduced carbon footprint. We also took measures to prepare the roof for future solar panels, for when the South End neighborhood’s aging electrical infrastructure is upgraded to allow them.
URBAN LIVING. The desirable neighborhood location allows the both the homeowners and tenant to walk, bike, and use public transportation to access the city, while each charging their respective plug-in electric cars behind the building to travel greater distances.
OVERALL. The understated rowhouse is now ready for another century of urban living, offering the owners comfort and convenience as they live life as an expression of their values.
Eric Roth Photo

White kitchen with stacked wall cabinets, custom range hood, and large island with plenty of seating.
Huge transitional dark wood floor kitchen photo in New York with an undermount sink, shaker cabinets, white cabinets, quartzite countertops, stainless steel appliances, an island and metallic backsplash
Huge transitional dark wood floor kitchen photo in New York with an undermount sink, shaker cabinets, white cabinets, quartzite countertops, stainless steel appliances, an island and metallic backsplash

Beach style light wood floor eat-in kitchen photo in Minneapolis with an undermount sink, shaker cabinets, white cabinets, white backsplash, subway tile backsplash and an island

Elegant open concept carpeted, beige floor and vaulted ceiling family room photo in Boston with white walls, no fireplace and a media wall

Originally a nearly three-story tall 1920’s European-styled home was turned into a modern villa for work and home. A series of low concrete retaining wall planters and steps gradually takes you up to the second level entry, grounding or anchoring the house into the site, as does a new wrap around veranda and trellis. Large eave overhangs on the upper roof were designed to give the home presence and were accented with a Mid-century orange color. The new master bedroom addition white box creates a better sense of entry and opens to the wrap around veranda at the opposite side. Inside the owners live on the lower floor and work on the upper floor with the garage basement for storage, archives and a ceramics studio. New windows and open spaces were created for the graphic designer owners; displaying their mid-century modern furnishings collection.
A lot of effort went into attempting to lower the house visually by bringing the ground plane higher with the concrete retaining wall planters, steps, wrap around veranda and trellis, and the prominent roof with exaggerated overhangs. That the eaves were painted orange is a cool reflection of the owner’s Dutch heritage. Budget was a driver for the project and it was determined that the footprint of the home should have minimal extensions and that the new windows remain in the same relative locations as the old ones. Wall removal was utilized versus moving and building new walls where possible.
Photo Credit: John Sutton Photography.

When my client had to move from her company office to work at home, she set up in the dining room. Despite her best efforts, this was not the long-term solution she was looking for. My client realized she needed a dedicated space not on the main floor of the home. On one hand, having your office space right next to the kitchen is handy. On the other hand, it made separating work and home life was not that easy.
The house was a ranch. In essence, the basement would run entire length of the home. As we came down the steps, we entered a time capsule. The house was built in the 1950’s. The walls were covered with original knotty pine paneling. There was a wood burning fireplace and considering this was a basement, high ceilings. In addition, there was everything her family could not store at their own homes. As we wound though the space, I though “wow this has potential”, Eventually, after walking through the laundry room we came to a small nicely lit room. This would be the office.
My client looked at me and asked what I thought. Undoubtedly, I said, this can be a great workspace, but do you really want to walk through this basement and laundry to get here? Without reservation, my client said where do we start?
Once the design was in place, we started the renovation. The knotty pine paneling had to go. Specifically, to add some insulation and control the dampness and humidity. The laundry room wall was relocated to create a hallway to the office.
At the far end of the room, we designated a workout zone. Weights, mats, exercise bike and television are at the ready for morning or afternoon workouts. The space can be concealed by a folding screen for party time. Doors to an old closet under the stairs were relocated to the workout area for hidden storage. Now we had nice wall for a beautiful console and mirror for storage and serving during parties.
In order to add architectural details, we covered the old ugly support columns with simple recessed millwork panels. This detail created a visual division between the bar area and the seating area in front of the fireplace. The old red brick on the fireplace surround was replaced with stack stone. A mantle was made from reclaimed wood. Additional reclaimed wood floating shelves left and right of the fireplace provides decorative display while maintaining a rustic element balancing the copper end table and leather swivel rocker.
We found an amazing rug which tied all of the colors together further defining the gathering space. Russet and burnt orange became the accent color unifying each space. With a bit of whimsy, a rather unusual light fixture which looks like roots from a tree growing through the ceiling is a conversation piece.
The office space is quite and removed from the main part of the basement. There is a desk large enough for multiple screens, a small bookcase holding office supplies and a comfortable chair for conference calls. Because working from home requires many online meetings, we added a shiplap wall painted in Hale Navy to contrast with the orange fabric on the chair. We finished the décor with a painting from my client’s father. This is the background online visitors will see.
The last and best part of the renovation is the beautiful bar. My client is an avid collector of wine. She already had the EuroCave refrigerator, so I incorporated it into the design. The cabinets are painted Temptation Grey from Benjamin Moore. The counter tops are my favorite hard working quartzite Brown Fantasy. The backsplash is a combination of rustic wood and old tin ceiling like porcelain tiles. Together with the textures of the reclaimed wood and hide poofs balanced against the smooth finish of the cabinets, we created a comfortable luxury for relaxing.
There is ample storage for bottles, cans, glasses, and anything else you can think of for a great party. In addition to the wine storage, we incorporated a beverage refrigerator, an ice maker, and a sink. Floating shelves with integrated lighting illuminate the back bar. The raised height of the front bar provides the perfect wine tasting and paring spot. I especially love the pendant lights which look like wine glasses.
Finally, I selected carpet for the stairs and office. It is perfect for noise reduction. Meanwhile for the overall flooring, I specifically selected a high-performance vinyl plank floor. We often use this product as it is perfect to install on a concrete floor. It is soft to walk on, easy to clean and does not reduce the overall height of the space.
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