Construction Éco-bâtiment, in partnership with ACAL System, unveiled the world’s first aluminium volumetric apartments in Québec, Canada. The project, named Lofts de l’Aluminium, also called ‘a world-first’, was developed to promote sustainable and efficient housing solutions. The six-unit, three-storey complex showcases the potential of aluminium in modular construction.
Image source: eco-batiment.ca
From a carbon perspective, the aluminium used in the project is produced in Québec using hydroelectricity, considered one of the greenest power sources globally. Its use in prefabricated volumetric modules, built off-site and assembled on-site, combined with EPS insulation, reduced foundation needs and costs by around 30 per cent.
The collaboration between Construction Éco-bâtiment and ACAL System led to the creation of this innovative housing solution. ACAL System, a Québec-based modular builder specialising in aluminium-framed units, has completed over 200 LEED-certified (thermal envelope for enhanced energy efficiency) projects across Canada. Their designs include a variety of housing options, from tiny homes to eight-plexes, each offering optional levels of completion.
The modules for Lofts de l’Aluminium were constructed with high precision, allowing for onsite assembly in just one day. This efficiency, coupled with the operational cost benefits of aluminium construction, highlights the advantages of modular building methods.
High levels of closed-cell insulation (EPS) were incorporated into the units: R42 in the walls, R50 in the floors, and R70 in the roof. Along with triple-glazed windows, this has led to an estimated 50 per cent reduction in heating and cooling costs for tenants. Additionally, the use of aluminium enhances fire protection, reduces insurance costs and ensures the structure resists rot, rust and mould, promoting healthier indoor air quality.
The overall completion time for the Lofts de l’Aluminium project was estimated to be 60 per cent less than traditional building methods. ACAL System has since improved its factory processes to deliver fully complete interiors onsite, further streamlining construction timelines.
Lofts de l’Aluminium’s final cost was approximately USD 2.3 million, with more than half funded by the Québec Affordable Housing Program and AluQuébec. The project was honoured with Écotech Québec’s 2024 “Eureka! Prize” in the Real Estate category, recognising its innovation and contribution to sustainable housing.
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