Roof Archives

Overhanging roof shelters Markolfhalle Markelfingen by Steimle Architekten

Local spruce wood is used throughout Markolfhalle Markelfingen, a multipurpose hall that architecture studio Steimle Architekten has added to the edge of a lake in Germany.

Located on the northern shore of Lake Constance in the Radolfzell district, the timber building contains sports courts and a stage for events, unified by a cantilevered roof overhead.

Markolfhalle Markelfingen multipurpose timber hall by Steimle Architekten — The Markolfhalle Markelfingen hall is embedded into the sloping landscape

Due to the natural slope of the site, Steimle Architekten embedded the Markolfhalle Markelfingen hall into the landscape, with a stepped plinth on one side that offers access to the upper level from the outside.

The two-storey building is crafted from spruce sourced locally from forests in the region, nodding to traditional buildings nearby that are made from the same wood.

Multipurpose timber hall in Germany by Steimle Architekten — The building is largely made from spruce wood

“The Lake Constance region is characterised by its rural structures,” studio architect Michaela Afife told Dezeen.

“Wood has always been a traditional building material in this region too. With its tranquil appearance, timber construction blends in with the traditional settlement landscape around Lake Constance,” she continued.

Rhythmic timber facade of a multipurpose hall — Vertical timber battens sit between the building’s columns

Externally, rhythmic timber columns animate each elevation, infilled by tightly arranged vertical timber battens.

“The consistently homogeneous outer shell with its vertical timber louvre structure gives the building a uniform appearance on all four sides,” said Afife.

Multipurpose timber hall in Germany — An overhanging roof crowns the hall

Inside, Markolfhalle Markelfingen holds a large double-height sports hall with two courts that can be separated by a netted divider.

Around the edges of the main space, the studio incorporated additional facilities including a raised stage, which is recessed into the timber-panelled wall.

Wooden panels line the bottom half of the walls inside, helping to conceal doors that open onto an outdoor playing field.

Slim windows are arranged at regular intervals around the top half of the walls to illuminate the space, while the ceiling has an exposed gridded timber structure.

Timber sports hall in Germany — Markolfhalle Markelfingen contains two sports courts

“The powerful and contemporary timber construction of the multi-purpose hall is the centre of cultural community life for citizens, clubs and schools,” said Steimle Architekten.

“As a multifunctional building, the hall with its one and a half sports fields and adjoining stage area fulfils the requirements of both sports use and an attractively designed event hall.”

Performance stage in the timber-lined Markolfhalle Markelfingen hall by Steimle Architekten — A stage is recessed into the timber wall

On the upper level is the entrance foyer, accessed through four glazed doors and offering views of the multipurpose hall below.

Most of the foyer level is left open, excluding a green-painted kiosk that holds a reception area.

Interior of the Markolfhalle Markelfingen multipurpose hall by Steimle Architekten — The entrance foyer overlooks the hall below

Other spaces in Markolfhalle Markelfingen include changing rooms, toilets, storage rooms and a kitchen for venue catering, all of which sit under the first-floor foyer.

Steimle Architekten is a German architecture studio founded by Thomas and Christine Steimle. Its previous projects include a library built within an existing traditional barn and a crystal-like house made from board-marked concrete.

The photography is by Brigida González.

Reference

Architecture

Medprostor encloses 12th-century church with folding roof in Slovenia

By Zarkon Group,26/02/2024

Local studio Medprostor has covered and partially repaired a 900-year-old Romanesque church in Slovenia, placing an operable roof on top of the open structure to create a space “between a ruin and a reconstruction”.

Medprostor crafted a series of modest interventions alongside the folding roof that aim to protect the significant monastic building, located inside the fortified grounds of the historic Žiče Charterhouse.

The repairs and alterations were also intended to improve its functionality for tourism and events.

Roof and lookout at Žiče Charterhouse church by Medprostor in Slovenia — Medprostor has topped a 12th-century church with a folding roof in Slovenia

According to the studio, the project was conceived to protect the church’s immaterial qualities as an ancient and sacred place, in addition to preserving its physical remains.

“The construction and restoration interventions were carried out in such a way that they enable a chronological reading of the 900-year-old sacral space,” Medprostor cofounder Jerneja Fischer Knap told Dezeen.

“[The design] fully conforms to the requirements of heritage protection for reversibility, with less invasive and less intense interventions,” he continued.

Blackened wood and steel roof over church in Žiče Charterhouse by Medprostor in Slovenia — The half-gable roof structure spans the length of the church and can be opened to the sky

“The largest intervention was the covering of the existing building with a semi-movable, folding roof,” Knap said.

“When lowered, it enables the smooth running of events in the church regardless of the season and weather, while when raised, it preserves one of the most important intangible moments of the ruin: contact with the open sky.”

Lightweight black steel, blackened wood and dark slate tiles make up the half-gable roof system, distinguishing the gesture from the church’s original masonry architecture.

Medprostor also chose restrained and rectilinear geometries for its interventions, seeking to establish a low-tech aesthetic language that could sit harmoniously against the heritage structures.

“The roof, together with its details and proportions is related to the key architectural elements of the whole church,” Knap explained. “And yet, it can also act as an illusion – a spectre in harmony with the open, ephemeral character of the ruin… [a] space between a ruin and a reconstruction.”

Open roof and ruins of the church at Žiče Charterhouse by Medprostor in Slovenia — A dark, uniform material palette defines the interventions across the church

The studio reconstructed a demolished portion of the church’s walls and flooring, while spiral staircases were placed into existing vertical shafts to reconnect visitors to an upper-level viewing platform.

“Two staircases are connected to a new lookout point with a narrow, slightly sloping corridor leading up to it, framed by the outer faces of the [reconstructed] north wall,” Knap explained.

“The lookout point offers an essential view from above of the northern part of the monastery complex and its ruined character.”

Repaired wall and raised flooring in church at the Žiče Charterhouse by Medprostor in Slovenia — The studio made limited repairs to the ruins, including reconstructing its partially collapsed northern wall

Slovenian architecture studio Medprostor was established by Knap, Rok Žnidaršič and Samo Mlakar in 2011, with projects spanning across the public and private sectors.

Medprostor’s interventions at Žiče Charterhouse were shortlisted for the 2024 European Mies van der Rohe Award, which has previously been won by Grafton Architects for its colonnaded teaching building for Kingston University in London.

The seven finalists for the 2024 Mies van der Rohe Award were recently revealed to include The Reggio School by Andrés Jaque, a copper-clad convent in France and a library by SUMA Arquitectura in Spain.

The photography is by Miran Kambič.

Reference

Architecture

Proctor & Shaw tops London home extension with serrated zinc roof

By Zarkon Group,10/12/2023

Architecture studio Proctor & Shaw has topped a home extension with a steeply-angled roof clad with red pigmented zinc in East Dulwich, London.

Home to a family of seven, Proctor & Shaw designed the project as an extension to an existing Edwardian house, extending the ground-floor kitchen and dining room.

Proctor & Shaw design London home extension with zinc roof — Proctor & Shaw has designed a serrated roof edge for a London home extension

In order to restrict potential onlooking from neighbours, the studio crafted a unique serrated-edged roof with exposed rafter tails to run alongside the extension – enhancing both privacy and daylight access.

“From the side, the serrated edge blocks oblique views from the principal first-floor neighbouring windows,” Proctor & Shaw director John Proctor told Dezeen. “It is designed to be pulled back (with the shortest overhang) at the mid-window point to allow the maximum amount of light directly from above.”

Serrated roof edge designed for Edwardian house extension — The unique roof design features exposed rafter tails lined with Douglas fir

A newly built porcelain-tiled living space sits adjacent to the kitchen and dining room and is also sheltered by the roof’s large overhangs.

Deep skylights punctured into the roof draw daylight into the space below, while sliding doors seamlessly connect the interior with an outdoor patio.

View from newly built living space in London home extension — Deep skylights draw daylight into the newly built living space

The interior space is defined by kitchen units and seating lined with warm-toned Douglas fir, which are contrasted by cool-toned concrete flooring and countertops.

A centralised services unit nestled behind the kitchen provides a bathroom and utility space defined by bold, pink-hued walls and matching floor tiles.

Built into a sloping site, level changes pose as thresholds – dividing the open-plan interior and exterior spaces.

Externally, metal steps lead down to the landscaped garden, which comprises a paved outdoor kitchen, seating area and outbuilding, designed in collaboration with Barbara Samitier Garden Design.

London home extension with Douglas fir interior — The kitchen and dining room have a largely concrete and wooden interior

According to the studio, drainage from the gutter-less zinc roof, as well as the home’s existing pitched roof, is provided at ground level to allow for a finely detailed roof edge.

“[The gutter-less roof] required careful navigation of regulatory requirements for rainwater drainage, which was ultimately achieved with the side roofs being kept small,” Proctor said.

Services unit within Proctor & Shaw's home extension — The services unit is defined by bold-coloured walls

Other London home extensions completed by Proctor & Shaw include a glazed extension added to Sky Lantern House and a micro-apartment with a translucent “sleeping cocoon”.

The photography is by Nick Deardon.

Project credits:

Architect and interior designer: Proctor & Shaw
Structural engineer: Constant Structural Design
Landscape designer: Barbara Samitier Landscape and Garden Design
Contractor: R & D Nunes (trading as Yorkland Stone)
Building control: Cook Brown Buildings Control Ltd

Reference

Architecture

wooden hanok roof frame tops nomal’s restaurant in korea

By Zarkon Group,04/12/2023

NOMAL’s Joomak revitalizes abandoned house in Palbok-dong

NOMAL studio’s project, Joomak, revitalizes the landscape of Palbok-dong in Jeonju, Korea, addressing the challenges of neglected industrial zones and structures. The once-thriving industrial area faced a decline during the 1990s, resulting in abandoned factories and neglected spaces. The project is part of the ‘MBC Empty House 3’ initiative that aims to regenerate four old disused houses in Palbok-dong. The design transforms one of the old structures into a modern restaurant, incorporating elements of traditional hanok architecture and a spatial layout resembling a Joomak, a term for a traditional Korean tavern.

all images by © Roh Kyung

renovation project preserves existing structural elements

The design team at NOMAL prioritizes the preservation of the building’s historical integrity, emphasizing existing structural elements and traces integral to the town’s long-standing village landscape. For the hanok, a meticulous process involves the removal of the roof to prevent structural collapse. The deteriorated wood structure undergoes reinforcement by enveloping the lower section with metal and infilling it with concrete. To meet contemporary load requirements and enhance roof performance, modern materials are employed in place of traditional roof tiles.

the project transforms an old structure into a modern restaurant, integrating traditional hanok elements

open layout blurs the boundaries between inside and outside

The project is centered around the concept of openness. Various design elements intentionally blur the distinction between indoor and outdoor spaces, creating a symbolic representation of an external environment within the interior. Utilizing metal for exterior walls and extending it to the kitchen and main hall, along with an opening directly connecting the roof frame with the interior ceiling, conveys the internal hall as a symbolic external space akin to a traditional joomak. Additionally, floor-to-ceiling windows facing the landscape further dissolve the delineation between the inside and outside, ensuring a visually open atmosphere within the relatively narrow space. The conversion of the adjacent vacant lot into a green patio enhances the ‘Joomak’s’ front yard prominence. This project initiates the process of revitalizing Palbok-dong through urban regeneration.

NOMAL preserves the building’s historical integrity and existing structural elements

deteriorated wood structure is reinforced, enveloping the lower part with metal and infilling it with concrete

the project’s core concept revolves around openness, blurring lines between indoor and outdoor spaces

Reference

Architecture

TAEP/AAP tops BBT Hilltop restaurant in Kuwait with stepped roof

By Zarkon Group,13/11/2023

An oversized stepped roof that doubles as an “amphitheatre for the city” tops BBT Hilltop, a burger restaurant in Kuwait City designed by architecture studio TAEP/AAP.

Named after its client, Best Burger in Town (BBT), the restaurant in the Sharq district is elevated on a bright red plinth that doubles as an outdoor seating area for customers.

Above, the overhanging roof provides additional seating as well as a flexible events space that TAEP/AAP designed to be used for outdoor cinemas, parties and concerts.

Aerial view of BBT Hilltop restaurant in Kuwait City by TAEP/AAP — TAEP/AAP has created the BBT Hilltop restaurant in Kuwait City

According to the studio, the aim is to “create opportunity for certain activities to take place, that otherwise would be less likely to happen in the business centre”.

“A building such as this does not merely occupy its plot, it gives something back,” TAEP/AAP told Dezeen.

“It can host all sorts of parties and concerts, artistic-related events, expositions and so forth. The possibilities are limitless.”

Drive-through restaurant with stepped roof — BBT Hilltop is topped by a stepped rooftop

On the ground floor, an indoor seating area sits alongside the kitchens and logistical spaces. Glass hatches for ordering and picking up food are sheltered by the roof, the underside of which has also been finished in a bold shade of red.

An opening on the southern side of BBT Hilltop leads customers directly to a red spiral staircase that winds up onto the roof terrace.

Tower and neighbouring restaurant in Kuwait City — The roof features seating and a slide

On the roof, a group of red shipping containers contain a pop-up store selling the restaurant’s merchandise. There is also a series of wide steps leading to seating areas sheltered beneath umbrellas and a yellow slide on the eastern edge.

The roof has been designed to be able to support additional pop-up structures in the future depending on its use.

“On top, a ludic contemplation area was developed to enjoy the views while eating, or simply resting,” explained TAEP/AAP.

“A stand was created to be used as a sitting area and playground, with the addition of a slide that interacts with the inclination of the canopy,” it added.

Red staircase to roof of BBT Hilltop restaurant in Kuwait City by TAEP/AAP — The use of red is informed by the restaurant company’s branding

The use of red throughout BBT Hilltop is informed by BBT’s branding and has been incorporated throughout the interiors in fixtures and fittings, as well as in the barriers for the drive-through area.

Other burger restaurants featured on Dezeen include an interior by Sapid Studio in Geneva informed by a Japanese patchwork technique and a restaurant in Turin by Masquespacio with brightly coloured tiles.

The photography is by Fernando Guerra.

Reference

Sustainable News

Ingenhoven Architects tops resort with Europe’s largest thatched roof

By Zarkon Group,16/10/2023

Architecture studio Ingenhoven Architects has created a series of buildings topped with large, overhanging thatched roofs for the Lanserhof Sylt health resort on the Germany island of Sylt.

Ingenhoven Architects was informed by the surrounding dunes and the thatched roof of a previous building on the site for the resort, which was built in an area formerly used by the military on the island of Sylt in northern Germany.

Lanserhof Sylt Medical Health Resort by Inhenhoven Architects — Ingenhoven Architects created the largest thatched roof in Europe

Lanserhof Sylt includes traditional spa services, such as a saltwater swimming pool, gym, climbing wall, yoga studio, sauna and steam rooms, library and indoor-outdoor lounges. The resort’s focus on health means there are also CT and ultrasound scanners, ECG monitors as well as IV lounges and colonic hydrotherapy suites.

Its building is topped with a thatch roof that measures 7,100 square metres – making it the largest in Europe. It was conceived as a contemporary interpretation of the surrounding dune landscape.

“Our projects are always to be understood as a contemporary reaction to what previous generations have created,” Ingenhoven Architects founder Christoph Ingenhoven told Dezeen. “At the same time, building on Sylt means being part of a dune in motion.”

“For the Lanserhof we designed buildings in harmony with nature, reduced to the essentials, which is our definition of luxury today,” he continued.

The studio chose a colour palette that echoes the surrounding landscape: beige, white, grey, wooden floors, large windows and transparent glass.

“Everything is geared towards simplicity and transforming restraints to achieve a positive spatial experience,” the studio explained.

Natural materials without synthetic finishes, such as reed, were used for the project, which Ingenhoven described as “not only a traditional choice but also an eco-friendly building element”.

Local craftsmen built the roof framework from wood, which “eased logistical challenges posed by the island’s location”.

“The softly undulating form of the roof harmonises beautifully with the dynamic dune landscape,” Ingenhoven explained.

“In terms of architectural heritage, we sought to pay homage to the cultural tradition of the island’s historical houses.”

Inside, an imposing staircase made of steel and oak connects all levels, leading guests from the reception to the garage to the medical area to their rooms, which each have their own sheltered outdoor area.

“The architecture operates in analogy to the medical concept, which, in terms of the healing process, translates to a design that simplifies itself to the essentials,” added Ingenhoven,

Other projects by Ingenhoven Associates recently featured on Dezeen include plant-covered skyscrapers in Tokyo and an office covered in five miles of hedges in Dusseldorf.

The photography is courtesy of Ingenhoven Architects/HGEsch.

Reference

Architecture

restoration unveils centuries-old roof structure inside portuguese residence

By Zarkon Group,21/09/2023

Combo Studio revives Casa São Victor in Porto

Combo Studio breathes new life into Casa São Victor, a historical building in Porto dating back to 1880-1881 that had lost its original charm due to ill-fated interventions that compromised its architectural integrity and spatial essence. The profit-driven alterations convert the building into collective housing, overshadowing its intrinsic character. The renovation aims to uncover the building’s original attributes preserving its heritage. Originally conceived as a single-family residence, the house features high ceilings, intricate carpentry, and a central staircase crowned by a conical skylight. The project revives the original spatial quality and comfort by subtracting any intrusive elements from the interior.

The project centers primarily on the revitalization of the building’s interior, excluding the untouched ground-floor commercial space. Spanning four floors, the dwelling’s layout unfolds connecting the various levels through the central staircase. The first floor houses the living area and kitchen, while the second floor offers a bedroom and bathroom. Ascending to the third floor reveals another bedroom and bathroom.

all images by Alexander Bogorodskiy

renovation reinterprets original architectural attributes

Originally conceived for an artist, a flexible studio-bedroom is devised on the top floor, offering versatility for combining sleeping areas with artistic pursuits. Along the entire length of the main wall, the design team installs a tripartite folding table, an adaptable centerpiece that can assume multiple configurations tailored to the workspace’s needs, discreetly folding into a wall paneling when not in use.

The restoration extends to the replacement of certain carpentry elements, such as craft baseboards and doors with their respective jambs. A restored partition wall within the water closet, unveiled during demolitions, now serves as a statement piece. In the top-floor bedroom, the removal of a false ceiling unveils the entire roof structure and a petite mansard, infusing the space with an airy expanse and natural light. Traditional materials like wood, Estremoz marble, and azulejos, along with a palette of light hues are thoughtfully chosen to visually amplify the interior’s sense of space. The aesthetic and formal features of the building’s original period act as a guide for the renovation project as elements from the past resurface, reinterpreted with a modern touch. The kitchen echoes old kitchens with grand chimneys and stone sinks, simplified for contemporary living.

in the top-floor bedroom, the removal of a false ceiling unveils the entire roof structure

the project revives the original spatial quality by subtracting any intrusive elements from the interior

the house features high ceilings, intricate carpentry, and a central staircase crowned by a conical skylight

spanning four floors, the dwelling’s layout unfolds connecting the levels through the central staircase

Reference

Architecture

membrane roof casts a soft glow over two-story house in tokyo

By Zarkon Group,14/07/2023

house with a membrane roof in tokyo, japan

House with a Membrane Roof is a private dwelling located in a dense residential area of Tokyo. Designed for an owner with a nomadic lifestyle, the project takes on a camping-like aesthetic with adaptive functions and spaces. Yuko Nagayama & Associates teamed up with Shohei Yoshida + Associates and architect Asuka Fujita to complete the 60 sqm residence enclosed by surrounding buildings on all sides except for the narrow frontage facing the street. These site conditions restrict from having large openings in the exterior walls, pushing the trio to introduce natural light from above through a tubular membrane roof. As a result, a diffused glow engulfs the roof volume before pouring into the second floor and atrium, reaching as far down as the ground floor.

Bathed in ample daylight, the second floor serves as a lively public area, whereas the ground floor shelters private quarters like the bedroom and bathroom, which, although basking in subduded lighting, provide a serene sanctuary akin to a tranquil cave, ideal for unwinding and slumbering peacefully. To optimize the site’s limited space, an indoor garden, complete with a flourishing tree, graces the skylit atrium, replacing the conventional outdoor garden. ‘By incorporating it indoors, the owner enjoys an immersive experience, directly engaging with nature rather than merely observing it through a window,’ notes the team.

changing lights inform about outdoor conditions

The Yuko Nagayama Associates team collaborated with Fujita and Shohei Yoshida + Associates (more here) to incorporate a flexible membrane material onto the roof, allowing it to take on a visually striking contorted shape. It consists of a dual-layer structure, with an upper and lower membrane enclosing the structural components and thermal insulation. The lower membrane follows a graceful catenary curve, attaching to T-shaped structural beams, resulting in a ceiling adorned with semi-circular light tubes. Meanwhile, the airspace within the roof serves as an insulating layer and facilitates natural ventilation. This allows air to circulate from bottom to top, ensuring a comfortable indoor environment.

While the sky is not directly visible through the membrane roof, the changing light conditions give cues about the surrounding environment. At sunrise, the space gradually brightens, and warm light tinges the area with a reddish hue during the evening. The brightness also varies depending on whether it is sunny or cloudy. ‘In this way, the roof acts as a skin-like layer, transmitting the exterior changes to the interior and transforming one’s sensory experience,’ reflects Yugo Nagayama. The House with a Membrane Roof took two years to complete.

a skylight at the entrance of House with a Membrane Roof

the membrane material introduces a soft glow to the interiors

attaching semi-circular light tubes to the lower membrane

Reference

Architecture

Is Demand Set to Grow for Architects Specialized in Green Roof Design and Renovation?

By Zarkon Group,12/07/2023

Architizer is thrilled to announce the winners of the 11th Annual A+Awards! Interested in participating next season? Sign up for key information about the 12th Annual A+Awards, set to launch this fall.

Rooftops have traditionally been the domain of mechanical equipment, line-drying laundry and the occasional playground for kids. Panoramic views and good weather make the perfect setting for sunset drinks (bars, restaurants and hotels got it right!), but expansive areas of residential building rooftops remain underused around the world. These spaces are waiting to be transformed into pleasant outdoor environments — and not necessarily for lucrative purposes. The benefits of transforming rooftops extend not only to residents but to entire cities at large.

Aerial views of roof terraces. Photo by CHUTTERSNAP via Unsplash

Roof terraces aerial view. Photo by CHUTTERSNAP via Unsplash.

In densely populated areas where scant land is available, underused roofs offer the opportunity to expand green urban areas, promoting urban biodiversity, improving the well-being of city dwellers and reducing negative environmental impact. With green roof technology, rooftops no longer accumulate heat during the day, creating the so-dreaded heat island effect. Instead, they retain rainwater and capture CO2 and pollutants. Turning rooftops into pleasant outdoor spaces accessible to building residents is an effective use of otherwise wasted built space and offers the opportunity to replace lost habitats.

Improving the Quality of Life for City Dwellers

Architects, developers, builders, landscape architects/designers and product manufacturers are the ideal team to create cohesive, functional and sustainable buildings that improve city dwellers’ quality of life. Architectural examples worldwide demonstrate that the effort to counter the overpopulation of urban areas and the scant green spaces is global. They differ, however, in the architectural vocabulary, which, in each case, facilitates the integration of buildings into their specific context, taking into account cultural, climatic and economic factors.

90-unit housing development in Saint-Ouen, France, by Atelier du Pont. Photo by Takuji Shimmura.

Take, for example, Atelier du Pont 90-unit mixed-use building in Saint-Ouen, near Paris, France, which draws inspiration from the city’s industrial heritage. The project offers private open spaces at various levels and a shared community garden, a gathering spot for the building’s residents.

The building’s overall massing of staggered concrete “boxes” maximizes natural daylight, while brightly colored metal balconies provide private outdoor spaces. On the sixth floor, a community garden offers open space for residents to grow their own organic vegetables and socialize. As open spaces in cities dwindle, rooftops and terraces open a world of opportunities.

Avalon Bay Urban Housing Landscape by Todd Rader + Amy Crews Architecture Landscape Architecture LLC, New York City, NY

Meanwhile, our next case study brings us to the New York City, where Todd Rader + Amy Crews designed the landscapes at Avalon Bowery Place in the heart of the concrete jungle, where scant land is available. The new landscapes root the project in the urban context and provide open space for the building’s residents and the neighborhood.

The project includes three landscapes at the ground level and two on building rooftops. While the ground-level landscapes unify the complex through visual connection and material selection, the roof terraces are physically isolated landscapes in the sky, where they enjoy sunny exposure and participate in the aerial archipelago formed by the landscape of city rooftops.

Nieuw Bergen development in Eindhoven, The Netherlands

Nieuw Bergen by MVRDV, Eindhoven, The Netherlands

Finally, let’s take a look at The Nieuw Bergen — a multi-unit housing development in Eindhoven, the Netherlands. Its design responds to an urban strategy tool that the architects, MVRDV, have been developing and implementing in cities on the way to sustainable densification. This strategy establishes environmentally friendly and dynamic living conditions for residents. The sloped roofs maximize sunlight for the buildings and the public spaces at street level, resulting in significant energy savings. The diverse roofscape of solar panels and greenery complement the area’s architectural character of new and existing buildings.

So, given all of the clear urban benefits demonstrated by the private initiatives explored in these examples, what would it look like to implement green roof design at an urban scale? Well, one European city has already recognized the broader benefits of mandating this architectural upgrade and is exploring ways to provide impetus for designers to incorporate green roofs in their plans.

Barcelona Living Terrace Roofs and Green Roofs Initiative

Following the example of other European cities, Barcelona has been promoting environmentally conscious initiatives, offering sustainable solutions to reduce pollution and increase access to green areas (internationally, Barcelona’s popular superblock concept has received a lot of coverage). Now, the Living Roofs and Green Covers initiative highlights the social and environmental benefits of green roofs and, since 2017, has been the platform to launch the Green Roof Competitions to promote the creation of green rooftops in privately owned residential buildings.

Initiatives like this one are paramount to raising environmental awareness. According to the Guide to Living Terrace Roofs and Green Roofs published by the City of Barcelona in 2014, it is estimated that 67% of the surface area of roofs in Barcelona (1,764.4 hectares) could be landscaped. If this could ever be achieved, the temperature in the city would drop by approximately two degrees, the green area per resident would more than double and the levels of air pollution would be considerably lower.

The Expansion of the Green Roof Market

The surface area that city building roofs cover is vast, and the social and environmental benefits of greening these surfaces are considerable. Building owners invest in green roofs, designers dream up the plans, and city authorities play a major role in spreading the practice. Choosing between living in the suburbs close to nature and living in the city near work is no longer necessary. Building residents are looking for homes with outdoor access, especially since the pandemic.

Aware of the increasingly popular demand, the real estate industry sees multi-unit residential buildings with partially or entirely planted rooftops as an architectural trend that adapts to a contemporary lifestyle. But how fast is the green roof market expanding? Studies indicate that the global green roof market has been steadily growing at a rate of 17% since 2020 and is expected to grow at this same rate through 2027. Limitations for this growth? Unfavorable climate conditions and maintenance requirements.

Reference

Architecture

Stephane Gaulin-Brown places curved roof on Quebec chalet

By Zarkon Group,16/06/2023

Montreal architect Stephane Gaulin-Brown has placed a single-slope roof with a curved soffit on top of a ski chalet to open it up to the forests of Mont Tremblant, Quebec.

Completed in 2023, the house – entitled Élément Tremblant – is a 1,400-square foot (130-square metre) retreat that recalls the glitz of the region’s classic ski culture with a contemporary twist.

Wooden soffit and curved roof with snow drifts — Stephane Gaulin-Brown created a chalet in Quebec

“The suave adventurous spirit of the early pioneers like Stan Ferguson and Hans Falkner, as well as 1940’s après-ski paintings…served as inspiration for the design.” Stephane Gaulin-Brown said. “The design also grew out of the natural context: the ferns, the birch trees, the deer, and the large glacial boulders strewn across the forest floor.”

The primary feature is a long shed roof with an ochre-coloured wooden soffit that curves from the exterior wall up to the edge of the cantilever. The roof references a traditional Quebecois roof form with up-curved ends and gives a sense of lightness to the chalet “like it was rising up in the air”.

Wooden roof with windows to an interior sauna — Wooden beams wrap the exterior

The tongue-and-groove wood of the soffit turns down the wall to form the upper portion of the facade. Below it, black board and batten siding clads the exterior walls between large, black-framed windows.

The house is organized in a simple double-loaded bar. The entry, secondary bedrooms and bathrooms are aligned facing down the sloped site, while the primary bedroom and open-plan kitchen, dining room and living area form a band that looks up the slope to the forest vista dotted with glacial boulders.

Curved roof with snow drifts — The roof slopes up to let in light and views

On the southeast corner, the windows peak and wrap around a spa. Meanwhile, the northeast corner is subtracted with a small porch off the primary bedroom.

The interiors centre the open living space, which is wrapped in warm stain-resistant Russian plywood and copper-toned metal panels that bounce light from thin, suspended fixtures.

Wooden interior of a sloped living room with steel fireplace — The living areas include plywood and a powder-coated steel fireplace

The sloped roof forms a trapezoidal space that peaks at 12 feet, but the wall of windows is capped just above the average height of a person.

Poured concrete forms a solid base for the powder-coated steel fireplace – a high-efficiency model manufactured locally by Stûv – and flat storage cabinet that rounds the corner to the primary suite.

“Recessed uplit LED lighting along the length of the main living space adds drama, ultimately making the living room into a kind of film set ready for après-ski hangouts,” Gaulin-Brown said.

In the kitchen, thin black hardware and square tile accent the warm wood cabinetry and white countertops.

Glass windows with views of snow in the kitchen — Large glass windows frame the kitchen

“Historical images, sourced with permission from the National Library of Québec, are framed around the house to make the sense of history visceral,” Gaulin-Brown explained. “In the master bedroom, a historical photo of the original Mont Tremblant steam train is printed on a large scale across the whole wall.”

The exposed concrete floor conceals a radiant heating system that warms the house and serves as a heat sink in the winter.

Bathroom with white walls and concrete floors — The house has a radiant heating system in the flooring

In a similar black and warm wood palette, YH2’s Quebec ski chalet also draws in light with an upward-sloping roof, but the Laurentian mountain house employs a V-shaped profile, lifting the roof on both sides like wings.

The photography is by Stephane Gaulin-Brown and Valerie Lacroix.

Project credits:
Client: Alex Roy
Contractor: Daniel Brisson
Designer: Stephane Gaulin-Brown

Reference

Roof

Overhanging roof shelters Markolfhalle Markelfingen by Steimle Architekten

Medprostor encloses 12th-century church with folding roof in Slovenia

Proctor & Shaw tops London home extension with serrated zinc roof

wooden hanok roof frame tops nomal’s restaurant in korea

NOMAL’s Joomak revitalizes abandoned house in Palbok-dong

renovation project preserves existing structural elements

open layout blurs the boundaries between inside and outside

TAEP/AAP tops BBT Hilltop restaurant in Kuwait with stepped roof

Ingenhoven Architects tops resort with Europe’s largest thatched roof

restoration unveils centuries-old roof structure inside portuguese residence

Combo Studio revives Casa São Victor in Porto

renovation reinterprets original architectural attributes

membrane roof casts a soft glow over two-story house in tokyo

house with a membrane roof in tokyo, japan

changing lights inform about outdoor conditions

Is Demand Set to Grow for Architects Specialized in Green Roof Design and Renovation?

Improving the Quality of Life for City Dwellers

Barcelona Living Terrace Roofs and Green Roofs Initiative

The Expansion of the Green Roof Market

Stephane Gaulin-Brown places curved roof on Quebec chalet

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