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Eelgrass Insulated Floating Home with Wattle and Daub Walls

Authors:
Konstantina Moutselou, Christina Chatsiou, Eirini Pappa
Eelgrass Insulated Floating Home with Wattle and Daub Walls

Project in-detail

Built using wattle and daub walls and insulated with eelgrass, this floating home adapts to rising water levels while providing a compact and comfortable living space for a couple.
5 key facts about this project
01
Buoyancy system enables the home to rise and fall with changing water levels.
02
Walls constructed using traditional wattle and daub technique for thermal efficiency.
03
Eelgrass used for insulation, promoting eco-friendly building practices.
04
Designed specifically for a flood-prone environment, enhancing resilience.
05
Compact layout optimizes space for efficient living for a couple.

The Contrapuntal Home is designed for a couple seeking a sustainable lifestyle while living off the grid. Positioned in a flood-prone area, this dwelling showcases modern amphibious architecture. It addresses the challenges of climate change by integrating resilience and adaptability into its design. The project harmonizes with the environment, incorporating lessons from historical building techniques alongside contemporary ideas.

Buoyancy System

Central to the design is a buoyancy system that uses expanded polystyrene (EPS) foam blocks. These blocks allow the structure to float and adjust to rising water levels during floods. Steel guidance posts provide stability for the home, ensuring that it remains safe while rising and falling with the water. This design allows nature to be a part of daily life rather than a barrier.

Wattle and Daub Construction

The exterior and interior walls of the home are built using the wattle and daub technique. This construction method involves a framework of woven branches filled with mud or clay, creating walls that are lightweight yet strong. This approach offers excellent thermal and sound insulation. Using traditional methods not only supports local craftsmanship but also aligns with the sustainability goals of the project.

Use of Seaweed

Seaweed, specifically eelgrass, is another important material in the design. It is used as insulation for the walls and roof, providing effective thermal and sound protection. This natural material contributes to the home's overall environmental impact, promoting renewable resources. Its application showcases a commitment to ecological living and reduces reliance on synthetic materials.

Adaptive Living Spaces

The layout maximizes space while ensuring comfort for residents. A loft sleeping area is included alongside essential areas such as the kitchen and bathroom. This arrangement makes efficient use of the smaller footprint, creating a functional and cozy living environment. Additionally, solar panels and water collection systems enhance the home's ability to operate independently from external resources.

The exterior design of the Contrapuntal Home creates a visual relationship with the surrounding landscape. It rises from the water, providing a unique viewpoint while contributing to a lifestyle that respects nature.

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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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