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Harnessing Thermal Mass with Natural Cob and Dynamic Outdoor Spaces

Authors:
Marcin Bombalicki, Maurycy Olszewski
Harnessing Thermal Mass with Natural Cob and Dynamic Outdoor Spaces

Project in-detail

Utilizing a cob wall and a thermal mass system, the design maximizes energy efficiency and connects seamlessly with outdoor terraces, creating a sustainable residence that promotes both comfort and community interaction.
5 key facts about this project
01
Utilizes a cob wall for natural thermal insulation.
02
Incorporates a heated thermal mass wall for year-round comfort.
03
Features a reciprocal roof structure for flexible interior layout.
04
Designed with large openings for panoramic exterior views.
05
Includes an outdoor terrace that extends from the kitchen space.

The Suncatcher project presents a thoughtful approach to living spaces that harmonize with the surrounding environment. It focuses on creating a comfortable home while also being mindful of energy use. Located in a landscape that provides ample natural light, the design is structured around an open floor plan, encouraging connections among those who inhabit the space. The entire concept revolves around the careful use of sunlight and the management of heat, reflecting a commitment to sustainable living.

Form Evolution

The design emphasizes reducing external surfaces to help regulate temperature and maximize incoming light. Openings in the structure are positioned to catch the sun's rays, lowering the need for electric lighting during the day. The use of a reciprocal roof structure is particularly noteworthy. It allows for a flexible layout that fosters warmth and brightness inside, creating an inviting atmosphere.

Seasonal Strategies

Understanding seasonal changes is central to the design. In winter, the structure captures solar energy to make the interior warm and cozy. In summer, overhangs protect against direct sunlight to prevent overheating. The inclusion of a heated thermal mass wall is essential for maintaining comfortable temperatures year-round. Combined with a rocket stove, this feature enhances the home's energy efficiency, making it adaptable to varying weather conditions.

Material Selection

A cob wall comprises the building’s exterior, made from a simple mix of clay, sand, straw, and water. This natural material serves as a thermal barrier, protecting the interior from harsh winds while keeping energy costs low. Large windows open the main space up to expansive views, allowing occupants to connect with the environment outside, which is a key element in the design philosophy.

Outdoor Integration

The outdoor terrace extends directly from the kitchen, promoting easy access to outdoor activities. This thoughtful layout encourages a lifestyle that values nature and interaction. Vegetation is incorporated thoughtfully within the design, enhancing the microclimate and improving air quality. These plants contribute to a sustainable environment, fostering a sense of well-being for those who live and work in the space.

The interplay of light and shadows across the thermal mass wall brings the design to life, changing throughout the day and adding a dynamic quality that enriches the experience of the living spaces.

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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

Enter an open architecture
competition now

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