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Sustainable Geothermal Retreat With Rammed Earth Walls and Cross-Laminated Timber Integration

Author:
Renzo Pali
Sustainable Geothermal Retreat With Rammed Earth Walls and Cross-Laminated Timber Integration

Project in-detail

Incorporating rammed earth walls and cross-laminated timber, the architectural design harmonizes with Iceland's geological landscape to provide a sustainable retreat that serves as a visitor center and rest area for nature enthusiasts.
5 key facts about this project
01
Integrates geothermal heating, utilizing Iceland's natural thermal resources for energy efficiency.
02
Constructed with locally sourced rammed earth and volcanic materials for environmental harmony.
03
Incorporates cross-laminated timber panels for structural integrity and sustainability.
04
Design features large, strategically placed windows to maximize natural light and scenic views.
05
Features modular pathways made from high-strength plastic, minimizing visual impact on the landscape.
The Grjótajá Rest House is an architectural project located in Iceland, designed to provide visitors with a seamless experience that integrates the surrounding natural landscape with functional amenities. The project reflects a modern architectural approach that emphasizes sustainability and ecological awareness while catering to the needs of those exploring the unique geological features of the area. The structure serves as a rest area with facilities including locker rooms, showers, geothermal pools, and a café, allowing for a conducive environment for relaxation and interaction with nature.

The architectural design adopts a site-sensitive approach, drawing inspiration from the local geology and the tectonic forces that shape the Icelandic terrain. The building’s footprint is oriented along the North-South axis to optimize passive solar heating, enhancing energy efficiency. Its compact form and low profile ensure minimal visual disruption to the landscape, while the choice of materials emphasizes local sourcing, durability, and aesthetic integration with the environment.

Sustainable Integration and Natural Material Use

One notable aspect of the Grjótajá Rest House is its commitment to sustainability through the use of renewable energy resources. The building incorporates solar panels to harness solar energy efficiently and employs a geothermal heating system that utilizes local heat sources. This approach not only reduces the ecological footprint of the structure but also fosters a holistic relationship with the surrounding environment.

Materiality is another defining characteristic of this project. The exterior is primarily constructed from rammed earth, leveraging local aggregates and volcanic soil to create walls that resonate with the geological context of Iceland. This choice enhances thermal mass and offers insulation, while the earthy tones align with the landscape's palette. Interior spaces prominently feature wood, specifically pine and spruce, providing warmth and comfort that complements the natural elements outside. High-strength plastics are utilized for modular pathways, creating adaptable walkways that blend seamlessly into the terrain.

Functional Organization and Visitor Experience

The Grjótajá Rest House is organized into distinct functional zones to optimize visitor experience and flow. The first floor houses the essential amenities, including lockers, showers, and geothermal pools, which are designed for efficient movement and privacy. On the second floor, visitors can find an observation area, café, and display spaces that encourage relaxation while showcasing views of the surrounding landscape. This duality of function promotes both individual enjoyment and communal engagement.

The integration of landscaping is carefully considered, with pathways and plantings designed to follow the natural contours of the site. This approach minimizes disruption while enhancing biodiversity and ecological balance. The design not only focuses on the built environment but also fosters a connection to nature, providing a restorative space for visitors.

Overall, the Grjótajá Rest House stands as an example of how architecture can harmonize with its environment through sustainable practices, innovative material use, and thoughtful design arrangements. For those interested in examining how these elements come together, further exploration of the architectural plans, sections, and detailed designs will provide valuable insights into the project's comprehensive approach to modern architectural challenges.
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100,000€ Prize / 2025

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

Competition organisers

The 10th edition of the MICROHOME architecture competition invites architects and designers from around the world to explore the possibilities of compact, sustainable living. Hosted by Buildner in collaboration with Kingspan and Hapi Homes, this special edition challenges participants to design an off-grid, modular microhome for a young professional couple, with a maximum floor area of 25 m². Designs should prioritize innovation, efficiency, and real-world feasibility. 

A total prize fund of 100,000 € will be awarded, including three main prizes, the Kingspan Award, and the Hapi Homes Award, which will grant 15,000 € and lead to the construction of the selected design. The final registration deadline is September 25, 2025, and winners will be announced on Decebmer 9, 2025. For full competition details and submission guidelines, visit microhome.info.

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
Early bird registration deadline 22 May 2025
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