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Hemp Insulation and Clay Structure Create a Flexible Community Space

Author:
Alexander Gutman
Hemp Insulation and Clay Structure Create a Flexible Community Space
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A round structure with a hemp-insulated facade and abundant natural light serves as a versatile community space, inviting various activities and fostering social interaction.
5 key facts about this project
01
A circular form inspired by shell geometry enhances spatial harmony with the landscape.
02
Hemp insulation contributes to the building's energy efficiency and sustainability.
03
Natural light is maximized through a central skylight and large façade windows.
04
Flexible interior spaces can be divided with curtains for varied activities.
05
Multiple entrances, including summer access from a pergola, promote outdoor connection.

The SPIRALA Community Home is located on a hillside and encourages community interaction among its users. Its circular design is inspired by the natural patterns seen in shells, creating a harmonious link to the surrounding landscape. Focused on functionality, the building is suitable for various activities, such as gatherings, meditation, and yoga classes. This thoughtful architecture makes the most of the site's natural features, helping occupants feel connected to their environment.

Design Concept

The design prioritizes the use of natural light inside the building. Large windows and glass doors allow daylight to fill the interior spaces, creating a warm and welcoming atmosphere. A round skylight positioned in the hall allows even more light to enter, ensuring the space remains bright throughout the day. This clever use of light not only enhances comfort but also supports energy efficiency.

Layout and Functionality

The interior layout of the SPIRALA Community Home is adaptable and flexible. This means that the space can be divided with curtains, allowing multiple activities to take place at the same time. There is a main entrance as well as a side entrance, along with six additional access points from the pergola during the summer months. These various entryways create an open connection to the outdoors, encouraging movement and interaction among users.

Sustainability and Materiality

Sustainability is a key focus in the building's design. Natural ventilation and heating solutions are incorporated for efficiency. A tiled stove with two chambers provides heat during winter, using a space below the floor to draw in fresh air. In addition, open dormers in the kitchen and toilets improve airflow inside. The materials chosen for SPIRALA include wood, clay bricks, hemp insulation, and a green roof. These selections support ecological objectives while allowing community involvement in the construction process.

The design features a cantilevered green roof, which helps to minimize heat loss in the winter and reduces excessive sunlight in the summer. This not only enhances the building's energy efficiency, but also reinforces the connection between the built environment and nature.

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The Buildner’s Unbuilt Award 2025: Celebrating Architectural Creativity and Visionary Unbuilt Designs with a Total Prize Fund of €100,000

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Competition organisers

The Buildner’s Unbuilt Award 2025 is an international architecture competition dedicated to recognizing and celebrating the value of unrealized architectural designs. It invites architects, designers, and students worldwide to submit visionary projects that have not yet been constructed, highlighting the power of ideas and the creativity behind the design process. By focusing on unbuilt work, the competition aims to bring forward concepts that shape the future of architecture and push the boundaries of the profession. 

Participants can compete in three categories based on project scale: Small Wonders (up to 100 m²), Medium Marvels (101–999 m²), and Large Visions (over 1,000 m²). Each category winner will receive €20,000, and additional prizes include honorable mentions, student awards, and a special Best Presentation Award. Winning projects will gain significant international exposure through Buildner’s publicity campaign and a feature article on ArchDaily, providing a unique opportunity to showcase creative ideas to a global audience. 

The Buildner’s Unbuilt Award 2025 encourages entrants to submit any type of unbuilt project, from conceptual visions to detailed designs, celebrating bold innovation without the constraints of realization. Important deadlines: registration closes on October 30, 2025; submissions are due by November 20, 2025; winners will be announced on December 17, 2025.

Buildner's Unbuilt Award 2025

Celebrating your unbuilt architecture visions with a €100,000 prize

100,000€ Prize / 2025 ideas COMPETITION
Prize 100,000 €
Eligibility Open to all
Final registration deadline 30 October 2025

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