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Charred Timber Cladding and Cross-Laminated Structure Supporting Geothermal Heating in a Communal Hub

Authors:
Blanka Vincze-hajnal, Milán Kas, Milan Valer Horváth
Charred Timber Cladding and Cross-Laminated Structure Supporting Geothermal Heating in a Communal Hub

Project in-detail

Utilizing charred timber cladding and cross-laminated timber construction, this communal hub harnesses geothermal energy to provide a functional and sustainable gathering space for outdoor enthusiasts in Iceland's unique landscape.
5 key facts about this project
01
Utilizes geothermal heating integrated directly into the conversation pit for enhanced comfort.
02
Features charred timber cladding for both aesthetic appeal and weather resistance.
03
Incorporates cross-laminated timber panels to achieve structural efficiency and warmth.
04
Designed with a bent A-frame to optimize views of the surrounding landscape.
05
Includes basalt slabs in the conversation area, connecting to the local volcanic context.

### Project Overview
"Common Grounds" is located in the crater of a volcano near the Mývatn region of Iceland. This facility serves as a communal hub for skiers and nature enthusiasts, designed to facilitate conversation and interaction among visitors drawn to the area's striking natural landscapes. The architectural approach establishes a connection with the environment, prioritizing community engagement through spatial organization and material selection.

### Spatial Configuration
The design features two principal components: a **conversation pit** and a **viewing deck**. The conversation pit is a circular space intended to foster intimacy and unity, equipped with geothermal heating to enhance comfort and draw upon Iceland’s natural geothermal resources. The viewing deck is carefully situated to offer panoramic vistas of the landscape, particularly the northern lights and distant mountains, serving both as an observatory and a gathering space that promotes social interaction.

### Material Selection and Sustainability
The project emphasizes sustainability through the thoughtful choice of materials that harmonize with the surrounding environment. **Charred timber** serves as the exterior cladding, providing durability against harsh weather while imparting a rustic aesthetic; its treatment enhances its longevity. **Cross-laminated timber (CLT)** is used internally to create a warm atmosphere conducive to relaxation. The flooring consists of sturdy concrete, facilitating maintenance and resilience against the elements. **Rock wool insulation** is employed within the walls to ensure energy efficiency across varying climatic conditions, while **basalt slabs** finish the conversation pit area, echoing the site's volcanic context. Notably, geothermal energy is harnessed for heating, and compostable HUUSI toilets are integrated to address ecological concerns. The facility features two entrances and a service station, enhancing accessibility for diverse users.

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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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