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Circular building materials


Circular construction


Reusing materials for The Resource Rows

3. September 2021

Solution provider

Lendager Group

Lendager was founded with the purpose of accelerating sustainable architecture. We enable the green transition in and around the built environment through architecture, urban planning, strategic and material innovation.

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The construction industry in Denmark accounts for approximately 30 per cent of the country’s total CO2 emissions and one-third of the country’s waste generation. Thus, it is imperative to enhance sustainability in the built environment. One crucial way to do so is to ensure that building materials are circulated and kept at their highest possible value at all times in their life cycle benefiting the individual project, people and planet.


The Resource Rows, a housing project consisting of 92 flats, demonstrate a radical reuse approach to materials that significantly reduce the construction carbon footprint. The flats are arranged around a shared courtyard and roofscape with 29 greenhouses made from reused wood and windows. The walls are built using upcycled bricks taken from a demolished Carlsberg brewery. As the brewery bricks were cement mortared and difficult to disassemble, Lendager developed a method whereby large squares would be cut from the old facades. Brick modules in different colours were then assembled in new designs, giving the building a patchwork-like facade. All internal floors were made of waste wood from the flooring manufacturer Dinesen, which would otherwise have been burned.



When building the Resource Rows, 10 per cent of the materials are upcycled waste materials, while the overall CO2 reduction is 29 per cent compared to benchmark reductions. Around 300 tonnes of wood waste were sourced from the construction of the city’s new metro and used externally for terraces etc. Each reused brick represents a CO2 saving of 500g and the wood has a CO2 saving of 77 %.