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Charred Wooden Shingles and Grass Roofing in Modular Trekking Cabins for Sustainable Retreats

Authors:
Alberto Castillo, Mario Young
Charred Wooden Shingles and Grass Roofing in Modular Trekking Cabins for Sustainable Retreats
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Constructed with charred wooden shingles and grass roofs, these modular trekking cabins offer resilient and sustainable shelter amidst the rugged Icelandic landscape for hikers seeking a harmonious retreat.
5 key facts about this project
01
Constructed with locally sourced charred wooden shingles for enhanced durability and weather resistance.
02
Features grass roofing that integrates natural insulation and blends seamlessly with the landscape.
03
Modular design allows for site-specific adaptation, accommodating varying topographies.
04
Utilizes cross-laminated timber panels for structural efficiency and environmental sustainability.
05
Incorporates water harvesting systems to support self-sufficiency for occupants.

## Overview

Located within the stunning landscapes of Iceland, "The Seeds" consists of a series of innovative trekking cabins designed to enhance both the visitor experience and environmental sustainability. The architectural concept integrates contemporary design with traditional Icelandic principles, emphasizing adaptability and resilience in the face of harsh climatic conditions. Each cabin serves as a functional shelter while contributing to the aesthetic harmony of its surroundings.

## Modular Design and Spatial Organization

The design features a selection of modular pods that are adaptable to various terrains, allowing for customized configurations that minimize ecological disruption. The basic geometric forms evolve into complex shapes that accommodate specific functional requirements, resulting in structures that blend into the landscape. The spatial arrangement promotes an open environment, fostering both individual reflection and social interaction among users. Warm materials and strategic spatial elements work together to create inviting interiors that enhance comfort for trekkers after long days outdoors.

## Sustainable Material and Energy Solutions

The materials selected for "The Seeds" are locally sourced and chosen for their sustainability credentials. Stone shingles offer durability and visual coherence with the environment, while reclaimed wood supports recycling initiatives. Grass roofing improves insulation and enables the cabins to blend with their natural setting. To ensure self-sufficiency, the cabins are equipped with rainwater harvesting systems for potable water and wind turbines for energy production, providing the necessary resources for lighting, heating, and other utilities.

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The Next House: USA — A Global Call to Reimagine the American Suburb

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Competition organisers

Buildner is launching The Next House: USA, a global architecture competition that challenges architects, designers, and thinkers to reimagine the American suburban home for the 21st century. For decades, the suburban house has symbolized comfort and stability, but today it often reflects excess, isolation, and environmental strain. This competition asks: how can the American home evolve to address climate urgency, economic pressures, and shifting social values?

Participants are tasked with designing a prototype home of no more than 1,500 sq ft (≈140 m²) for a household of two adults and one child. The design should be compact yet generous, adaptable, sustainable, affordable, and replicable across diverse U.S. contexts. More than a design exercise, the competition aims to spark a conversation about how homes can support healthier, smarter, and more connected communities.

The total prize fund is $20,000 USD. The final registration deadline is May 20, 2026, and winners will be announced on September 22, 2026. The Next House: USA invites architects, students, and visionaries worldwide to redefine what the American home means today—and what it should mean tomorrow.

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