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Natural Water Harvesting and Cross Ventilation in a Modular Retreat Home

Authors:
Dumitru Ana, Raluca Negoescu, Ruxandra Chirca, Oana Gavrila
Natural Water Harvesting and Cross Ventilation in a Modular Retreat Home

Project in-detail

With a focus on natural water harvesting and cross ventilation, the design integrates a ventilated wooden façade and rigid rock wool insulation to create a sustainable modular space for contemplation and retreat.
5 key facts about this project
01
Modular design with four transportable components.
02
Incorporates rainwater harvesting for sustainable water management.
03
Cross ventilation strategy enhances natural airflow and indoor comfort.
04
Ventilated wooden façade improves insulation and aesthetic appeal.
05
Tailored for specific climates in Austria, Poland, and Romania.

The RETREAT HOME project offers a modular dwelling designed for individuals seeking a peaceful space away from their daily lives. Located in temperate continental climates in places like Zell am See, Austria; Zakopane, Poland; and Cavnic, Romania, the house aims to blend comfort, sustainability, and functionality. The design emphasizes a user-focused environment while addressing the unique climatic challenges of these rural and semi-urban areas.

Modular Configuration

The structure is organized into distinct areas meant for daytime and nighttime use. This clear division allows for effective space utilization and meets varied needs. The core design consists of a volumetric module made up of four main parts, which simplifies transportation and assembly on-site. This modular approach supports quick and efficient construction, with a focus on maintaining a cohesive design.

Sustainability Features

Sustainability is woven into the project's design. A key feature is cross ventilation, which uses natural airflow to keep indoor spaces comfortable without relying solely on mechanical systems. Fresh air from outside enters the building, while warmer air rises and escapes through higher openings. This approach helps to regulate temperature and improve overall indoor conditions.

Energy Efficiency and Resource Management

Energy systems are a significant aspect of the design. Solar and photovoltaic panels generate electricity and heat by capturing sunlight, promoting energy self-sufficiency. Additionally, a rainwater harvesting system gathers water from the roof and directs it to storage tanks for later use. This system reflects a commitment to responsible management of water resources.

Material Selection

Materials play an important role in the build quality and performance of the house. The exterior features a ventilated wooden façade, complemented by OSB board and wooden vertical mullions. Rigid rock wool provides thermal insulation. Other components include high-performance insulating boards and vapor barrier sheets that together enhance energy efficiency. Fireproof plasterboard ensures safety, while aluminum profiles and façade overhangs provide a practical yet appealing finish.

RETREAT HOME combines modern design principles and sustainable practices, focusing on the needs of its occupants and responding to its environmental context. The arrangement of spaces promotes a connection to nature, facilitating a harmonious interaction between the home and its surroundings.

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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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