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Floating Units With ETFE Membranes and Sustainable Eco Foam in Natural Setting

Authors:
Francesco Gatti, Elsa Sanfilippo, Francesco Lipari, Giuseppe Conti
Floating Units With ETFE Membranes and Sustainable Eco Foam in Natural Setting

Project in-detail

The use of lightweight ETFE membranes and spray Eco Foam creates floating units that harmonize with the natural landscape, offering a unique spa experience in Latvia.
5 key facts about this project
01
Units appear to float above the ground, minimizing ecological disruption.
02
ETFE membranes create unique, spiky roof shapes that enhance aesthetics.
03
Local wood elements reinforce connections to the Latvian environment.
04
Geothermal systems provide energy-efficient heating and cooling solutions.
05
Lakewater filtration systems support sustainable spa operations.

The Pinecones Resort is located in the scenic landscape of Latvia and offers a unique accommodation experience. The design draws inspiration from local elements, particularly the pine trees and pinecones found in the region. It also reflects aspects of traditional Latvian architecture through the use of high, sharp roofs. This approach helps create a close relationship between the buildings and the surrounding natural environment, allowing guests to experience nature fully.

Design Concept

The layout features floating units that resemble treehouses or small spaceships. These structures appear to hover above the ground, reducing their impact on the ecology. A wooden footbridge connects the public areas, such as parking and staff residences, to more private guest units and spa facilities. This arrangement promotes movement throughout the site while still respecting personal space and privacy.

Sustainability Features

Sustainability is central to the design of the resort. Geothermal loops provide heating and cooling, ensuring energy efficiency throughout the year. The use of a filtration system that collects lake water serves as a primary resource for the spa. This commitment to environmental care is further emphasized with the inclusion of Solar Window technology, where the clear glass works as solar panels, improving the overall energy performance of the resort.

Material Use

The design incorporates an ETFE pneumatic membrane for the roofs, allowing for the distinctive spiky shapes of the units. This material is lightweight and fully recyclable. Spray Eco Foam is used for insulation, enhancing thermal performance while keeping the structure light. Local wood serves as the main framework, connecting the buildings to the regional context and honoring traditional construction practices.

Every design aspect combines functionality and aesthetic appeal. Each unit stands as its own entity, yet they come together to form a cohesive environment that reflects Latvia's natural beauty. The playful shape of the roofs interacts with sunlight, casting interesting shadows that change over time, enriching the overall experience for guests.

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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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