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Geothermal Community Hub Featuring Volcanic Stone and Double-Skin Facade

Authors:
Jose abel Espinosa dyck, María Martínez
Geothermal Community Hub Featuring Volcanic Stone and Double-Skin Facade

Project in-detail

Constructed with volcanic stone and a double-skin facade, the community hub leverages geothermal energy to create a sustainable gathering space that fosters social interaction and environmental sensitivity.
5 key facts about this project
01
Constructed with locally sourced volcanic stone to enhance durability and aesthetic integration.
02
Incorporates a double-skin facade to optimize insulation and natural ventilation.
03
Utilizes a geothermal energy system for efficient heating and sustainability.
04
Features charred wooden shingles for added fire resistance and a unique texture.
05
Designed with tiered levels to promote social interaction and diverse user experiences.

### Overview
Located in the unique geological setting of Myvatn, Iceland, the design of "Cráter" investigates the interplay between natural ecosystems and human habitation. The project references volcanic craters to symbolize social dynamics and human interactions, translating these themes into an architectural form that encourages communal engagement. Emphasizing a commitment to sustainable design, "Cráter" seeks to create spaces that reflect both local culture and the surrounding environment.

### Materiality and Sustainability
The material selections for "Cráter" are intentionally designed to harmonize with the local geology and promote sustainability. Concrete is utilized for its structural capabilities while mimicking the textures of Iceland's volcanic landscape. Wood is strategically incorporated in the interiors to create a warm atmosphere, enhancing users' sensory experiences. Glass façade elements are included to maximize natural light and visually connect occupants with the stunning exterior environment. Local vegetation, including native species such as Nordic gallium and white birch, is integrated to support biodiversity and aesthetic appeal. Green roof systems further augment energy efficiency and foster ecological health, contributing to the project's overall sustainability goals.

### Spatial Organization
The tiered structure of "Cráter" is organized into distinct levels, each serving varied functions that enhance user experience. The first level features a double-skin façade that acts as an environmental buffer, promoting natural ventilation while maintaining thermal comfort. A dedicated vegetation layer not only enhances aesthetics but also aids in stormwater management. The ground floor leverages geothermal technology for radiant heating, substantially reducing energy reliance on fossil fuels. Meanwhile, the underground level connects to the earth’s geothermal systems, providing a direct link to local natural resources. The thoughtful layout, including diverse communal spaces such as breweries and relaxation areas, fosters social interaction and enhances the user experience within a cohesive environment.

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MICROHOME 10: Celebrating Small-Scale Living with €100,000 Prize Fund and Kingspan’s Innovation

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Competition organisers

The MICROHOME 10 competition invites participants to submit visionary designs for off-grid, modular microhomes that push the limits of sustainable, small-scale living. Organised by Buildner in partnership with Kingspan and Hapi Homes, this tenth edition sets the challenge of designing a dwelling for two people within a maximum floor area of 25 m², encouraging bold solutions adaptable to any urban or rural location. The competition continues Buildner’s mission to foster innovative approaches to compact, energy-efficient housing that can address pressing global challenges.

This year’s edition offers a generous total prize fund of €100,000, including the Kingspan Award for designs that integrate high-performance Kingspan products and the Hapi Homes Award for a project selected for real-world construction. In addition to cash prizes, the winners gain international exposure through Buildner’s media partnerships, publications, and a dedicated MICROHOME magazine, further amplifying their ideas to the wider architectural community.

Key dates for MICROHOME 10 include the closing date for registration on 25 September 2025, the submission deadline on 29 October 2025 (11:59 p.m. London time), and the announcement of winners on 9 December 2025. These milestones ensure participants have clear timelines to develop and present their concepts, with early registration discounts available to support students and emerging designers worldwide.

MICROHOME

Design a new small-scale home concept in the 10th edition of MICROHOME — 100,000 € prize + construction

100,000 € Prize Fund / Kingpsan Edition #10 ideas COMPETITION
Prize 100,000 € + Potential realisation
Eligibility Open to all
Final registration deadline 25 September 2025

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