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Dynamic Etfe Membrane Roof with Steel Framework in Sustainable Cabin Design

Dynamic Etfe Membrane Roof with Steel Framework in Sustainable Cabin Design
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A dynamic ETFE membrane roof, supported by a flexible steel framework, adapts to seasonal snowfall while providing a sustainable retreat for outdoor enthusiasts in Iceland's rugged landscape.
5 key facts about this project
01
Dynamic roof adjusts to seasonal snowfall, enhancing structural efficiency.
02
Hybrid ETFE membrane allows for increased light and thermal performance.
03
Flexible steel framework accommodates changes in weather conditions.
04
Interior spaces utilize local wood to create a warm atmosphere.
05
Minimal ground impact preserves the natural landscape around the cabin.

### Project Overview
Located in the Myvatn region of Iceland, the Snow Melt Cabin is designed to serve as a retreat for hikers and skiers while responding to the challenges posed by the surrounding natural environment. The intent behind the design is to create a connection between the built structure and its dynamic landscape, incorporating features that adapt to seasonal variations.

### Architectural Strategy
The design integrates four distinct building types into a cohesive form, prioritizing both practicality and aesthetic coherence. The upwardly expanding roof shape minimizes the cabin's footprint, preserving a greater expanse of the natural landscape. This approach emphasizes sustainability, with each component—both external and internal—carefully orchestrated to enhance the user experience in relation to the environment.

### Material Applications
A selection of materials was chosen for their functional and ecological qualities.
- **Steel Spring Frame**: This component provides structural flexibility, enabling the roof to respond effectively to varying snow loads and weather conditions.
- **ETFE Membrane**: Lightweight and durable, this material facilitates air circulation and snow melt while contributing positively to thermal performance.
- **High-Performance Glazing**: Designed to optimize natural light and views, this glazing fosters a strong connection between indoor spaces and the surrounding landscape.
- **Wood Elements**: Likely sourced from pine or similar species, wood is used in wall systems and furniture, adding warmth and comfort.
- **Concrete**: Utilized in the foundation, concrete ensures durability and structural integrity in harsh climatic conditions.

### Innovative Snow Melting Mechanism
A notable feature of the cabin is its adaptive snow melting mechanism, designed to optimize energy efficiency. The roof structure adjusts seasonally—extending in summer to enhance airflow and compressing in winter to allow for controlled snow accumulation. As snow gathers, the system’s form modifies, enabling gradual melting and minimizing the heating requirements for the cabin, ultimately resulting in reduced energy consumption.

### Design Features and User Experience
The internal layout includes essential amenities such as changing rooms, showers, and warming areas, reflecting a thoughtful distribution to enhance user flow and functionality. Despite its compact dimensions, the cabin creates a spacious and inviting atmosphere, balancing comfort with the exterior's starkness. The geometric roofline not only fulfills practical needs but also contributes to the building's overall aesthetic, promoting minimal disruption to the existing ecosystem while accommodating visitors’ requirements.

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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.

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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