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Trombe-Green Wall Cabin with Prefabricated Wood and Straw Elements

Author:
Mohamed Elbangy
Trombe-Green Wall Cabin with Prefabricated Wood and Straw Elements
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The installation of a Trombe-green wall in a prefabricated cabin made from wood and straw enhances passive heating and air purification, creating an efficient living space designed for individual occupancy in Latvia's natural landscape.
5 key facts about this project
01
A Trombe-green wall enhances energy efficiency and air quality.
02
The cabin is designed specifically for single occupancy.
03
Materials used include wood, straw, and wood fiberboards.
04
It features a compact, multifunctional interior layout.
05
The exterior is finished in black to absorb solar heat.

The prefabricated off-grid cabin is designed for individual use and located in Ozolini, Latvia. It emphasizes sustainability and energy efficiency, while fostering a close connection with the natural surroundings. The cabin's layout is oriented along the east-west axis, which optimizes solar exposure. This design choice enhances the effectiveness of passive heating strategies, allowing the structure to minimize reliance on external energy sources. The overall concept reflects thoughtful consideration of the environment, resulting in a functional and integrated design.

Cuboid Volume and Orientation

The cabin stands as a simple cuboid shape that faces south to capture sunlight throughout the day. This orientation improves passive solar heating and contributes to energy efficiency. Large door-window-skylight openings between interior and exterior spaces allow natural light to fill the cabin. These design features also provide striking views of the surrounding landscape, making nature an integral part of the living experience.

Integration of Trombe-Green Wall

A key component of the design is the Trombe-green wall positioned on the south facade. This element has two main functions: passive heating and air purification. The use of vegetation on the wall not only improves indoor air quality but also helps maintain comfortable temperatures inside. This addition highlights a modern approach to sustainable design, illustrating a commitment to using natural elements for the benefit of the occupants.

Dynamic Interior and Functional Layout

Inside, the cabin utilizes a dynamic cupboard-like wall that offers various functions within a compact space. This innovative aspect integrates essential components such as a closet, bed, kitchenette, and toilet into one unit. The layout encourages adaptability, allowing residents to adjust the space according to their needs. This functionality promotes comfort and creates a suitable environment for rest and meditation.

Materiality and Aesthetic Consideration

The chosen materials include wood, straw, and wood fiberboards, which align with the project's sustainable intent. Using natural materials reduces the ecological footprint and keeps embodied energy low. The exterior is finished in black, which absorbs sunlight and assists with passive heating. This color choice creates a calming visual effect that blends with the landscape. Carefully placed windows frame picturesque views, connecting occupants closely with nature and enhancing the overall living experience.

The cabin’s design highlights a clear relationship with its environment, combining practical functions with a respect for natural elements. Each aspect is thoughtfully executed, resulting in a structure that serves the needs of its inhabitants while harmoniously coexisting with the landscape.

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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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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.

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

100,000€ Prize / 2025 ideas COMPETITION
Prize 100,000 €
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