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Conical Structure Framed with Cardboard Tubes and Enhanced by Aluminum Foam Panels

Authors:
Judith Cukier, Miguel Acosta, Juan Ramirez
Conical Structure Framed with Cardboard Tubes and Enhanced by Aluminum Foam Panels

Project in-detail

Framed by cardboard tubes and clad in aluminum foam, the conical structure optimizes natural light while fostering community interaction in a residential setting.
5 key facts about this project
01
Conical shape promotes natural light and enhances connection with the landscape.
02
Cardboard tubes provide structural support while being lightweight and recyclable.
03
Aluminum foam panels create a reflective façade that balances light distribution.
04
Built-in library and flexible gathering spaces foster community interaction.
05
Indoor and outdoor areas seamlessly blend for a cohesive living environment.

The Spirala Community Home project is located in Northern Portugal and aims to enhance the connection between its residents and their natural surroundings. The design focuses on creating comfortable and functional spaces that encourage interaction and community living. Inspired by the Fibonacci sequence, the building's conical shape promotes a fluid relationship with the landscape, allowing it to harmonize with its setting while prioritizing ecological values.

Sustainable Design Approach

The design integrates various elements to support its ecological goals. Vertically projected paper piles and non-pile paper tubes form the structural framework of the building, with different heights that create a sense of organic growth. Natural light plays an essential role, as wide-open folding doors invite the outdoors in, fostering an inviting atmosphere that encourages use of the exterior spaces.

Materiality and Structure

The project emphasizes the choice of materials, using cardboard tubes that are lightweight and recyclable for structural support. This decision reflects a commitment to sustainability. The materials also allow for efficient integration of necessary electrical and plumbing systems, maintaining the building's functionality without adding unnecessary weight.

Interior Space Planning

Community-focused areas are a key feature, including a built-in library and collaborative seating arrangements equipped with pull-down whiteboards. These multifunctional spaces serve to enhance social interaction among residents, reinforcing the idea of shared living. The indoor environment is made warm and welcoming with light beige wood and cork surfaces, encouraging gatherings and conversation.

Aluminum foam panels on the exterior contribute to light distribution and climate control within the building. By allowing natural light to filter through, these panels create a comfortable interior environment while enriching the overall aesthetic of the design, demonstrating a thoughtful balance between practical needs and visual appeal.

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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

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