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Water-Reusing Home With Straw Roof and Open Layout

Authors:
Manuel Lara, Pol Aguilella, Ignacio Martínez
Water-Reusing Home With Straw Roof and Open Layout

Project in-detail

Constructed with a sloping straw roof that facilitates water reuse, this home features an open layout with strategically placed service areas, addressing local housing needs while embracing environmental sustainability.
5 key facts about this project
01
The design incorporates a sloping gable roof to enhance interior spatial perception.
02
Bathroom and kitchen placement on the sides optimizes central living space.
03
Straw and wood materials reflect local building traditions and cultural context.
04
Rainwater collection system integrated into the roof design promotes sustainability.
05
Large openings allow natural light and airflow, improving energy efficiency.

"Jacal" is an innovative housing solution located in Guatemala, designed to meet local needs for shelter. It draws inspiration from traditional building techniques while also embracing modern principles of sustainability. The focus on user participation in construction makes the design practical, allowing residents to engage in the building process. The overall concept is shaped by the climate of the region, creating a connection between indoor spaces and the natural environment outside.

Spatial Layout

The layout of Jacal features a thoughtful arrangement of spaces. The bathroom and kitchen are placed on either side of the home, opening up a large central area. This design choice encourages community interaction and enhances the feeling of openness. It limits unnecessary circulation spaces while ensuring that essential areas remain functional and comfortable, even in a compact structure.

Roof Structure

A distinct aspect of Jacal is its sloping gable roof. This roof design not only contributes to a sense of spaciousness within the home but also helps avoid feelings of tightness. Additionally, the roof is designed to capture and reuse rainwater through drainage pipes. This feature aligns with sustainable practices by promoting responsible water use in a region where water conservation is crucial.

Material Choices

The construction of Jacal relies on proximity materials, specifically straw and wood. These materials are significant for their practicality and connection to local traditions. By using materials sourced from the surrounding area, Jacal reflects the cultural context while also supporting environmentally friendly building habits. This choice further strengthens the bond between the home and its setting.

Sustainability Features

Sustainability plays a vital role in Jacal’s design. Solar panels are strategically placed on the roof, demonstrating a commitment to reducing the dwelling's impact on the environment. Natural ventilation and ample sunlight contribute to a comfortable living space. The integration of large openings enhances indoor lighting, creating a warm and inviting atmosphere that complements the outdoor lifestyle common in Guatemala.

Natural light flows generously through the open spaces, making the home feel bright and welcoming.

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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
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