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Geothermal Thermal Mass With Local Stone and Straw Insulation in Mountain Retreat

Authors:
DIL PHAGAMI MAGAR, Abhishek Rai, Bikrant Pakhrin, Kalpana Rai
Geothermal Thermal Mass With Local Stone and Straw Insulation in Mountain Retreat

Project in-detail

Emphasizing geothermal thermal mass and utilizing locally sourced stone and straw insulation, the structure provides a resilient haven for trekkers amidst the mountainous landscape.
5 key facts about this project
01
Utilizes geothermal thermal mass for energy efficiency and climate resilience.
02
Features locally sourced stone for structural integrity and thermal properties.
03
Incorporates straw insulation to enhance sustainability and comfort.
04
Designed with a bent A-frame to optimize space and views.
05
Encourages community interaction through strategically placed communal areas.

## Project Overview

The functional structure is situated in a mountainous region of the higher Himalayan belt, where it engages with both the unique climatic conditions and the cultural characteristics of the area. The design is informed by the architectural traditions of local ethnic groups, including Tibetan and Indian influences, and aims to accommodate the needs of hikers and trekkers while ensuring the resilience of the building against extreme weather conditions.

## Site Strategy

The architectural strategy delineates the site according to altitude and cultural specifics. Three geographic regions have been identified to inform design choices: the Tamangs, residing above 3000 meters with traditional Tibetan architecture; and the Sherpas and Thakalis, located in the Himalayan foothills, who reflect their unique cultural practices in a design that is adaptive to environmental demands. Local materials are effectively integrated, promoting both structural durability and cultural relevance.

## Design Development

Key design features include the orientation that maximizes natural light and warmth, and a layout that follows the natural topography of the land. The building’s lower section is partially embedded into the earth, utilizing geothermal benefits for improved thermal efficiency. A clear separation between communal spaces and private quarters enhances usability and privacy. The design also incorporates large glass panels in the upper levels, ensuring unobstructed views of the landscape and deepening the connection with the natural surroundings.

## Materiality

Sustainable practices are evident in the choice of locally sourced materials. Timber forms the structural framework and finishing elements, while lime render and straw bale insulation enhance the building's thermal performance. The use of local stone contributes to the structure’s strength and thermal mass, allowing it to meld seamlessly into its environment. This material selection reinforces the project's commitment to environmental sustainability and cultural authenticity.

## Spatial Configuration

The spatial organization consists of multiple levels designed for efficiency. The ground level features communal spaces like the dining area and a shared hearth, fostering social interaction among users. Upper levels provide sleeping quarters with scenic views, while the lower levels accommodate utility and storage needs. Each area is intentionally structured to promote functionality and enhance the experience for visitors.

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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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