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Recycled Materials and PIR Panels Transforming Historic Arches Into Affordable Housing

Authors:
Jessica Hester, Anthony Cricchio, Dayton Castleman, Thomas Merritt
Recycled Materials and PIR Panels Transforming Historic Arches Into Affordable Housing

Project in-detail

Using recycled materials and high-insulation PIR panels, the design repurposes historic rail viaduct arches into adaptable affordable housing units, addressing urban living challenges while preserving the architectural heritage of London.
5 key facts about this project
01
Transforms over 10,000 underutilized rail viaduct arches into functional living spaces.
02
Utilizes high-insulation PIR panels for energy efficiency and sound reduction.
03
Modular housing units are prefabricated off-site for rapid installation.
04
Accommodates household sizes from one to ten, allowing for diverse living arrangements.
05
Focuses on integrating affordable housing into historically significant urban areas.

The VIAdwell project serves as a practical solution to the urgent demand for affordable housing in the London Metropolitan Area. It focuses on reusing the existing rail viaducts, which are an important part of the city’s history. With more than 10,000 arches available, many of which are currently underused, the project aims to create functional living spaces that meet the needs of diverse residents.

Design Concept
The design centers on the idea of converting old rail arches into comfortable homes. By utilizing these existing structures, the project minimizes the need for new construction and its associated environmental impact. The goal is to create an effective response to housing shortages. This approach connects past and present, ensuring that the historical significance of the viaducts is maintained while providing modern housing solutions.

Materials and Construction
The focus on sustainability is evident in the choice of materials and building methods. Recycled materials are used throughout the project, supporting efforts to reduce waste and encourage responsible building practices. The housing units are constructed with PIR panels, which are known for their excellent insulation properties. This helps to keep homes energy-efficient and minimizes noise from the bustling urban environment.

Modular Housing Units
Each housing unit is designed to be modular, meaning they can be made off-site and quickly set up in their final location. This method allows for flexibility in how the spaces are arranged, making it possible to accommodate different household sizes. Options range from single individuals to larger families of six or more people in some cases. Each unit is tailored to fit the specific conditions of its arch, ensuring both comfort and functionality.

Community Integration
The VIAdwell project also focuses on integrating affordable housing into areas that have traditionally been out of reach for lower-income families. By doing so, it promotes diversity and inclusion in the urban landscape. The design includes features to support residents with mobility needs, showing a commitment to making housing accessible for everyone.

In sum, the project combines historical elements with modern requirements, creating a living environment that resonates with London’s past while serving its future. Each unit maintains a connection to the viaducts, preserving their character while providing valuable new homes to those in need.

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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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