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City of Antwerp steps up efforts to make flat roofs more sustainable

The City of Antwerp is intensifying its efforts to use flat roofs more intelligently, signing the Klimaatdakprotocol (Climate Roof Protocol), an initiative by sector federations Embuild Vlaanderen and Buildwise. The agreement aims to deploy flat roofs as a tool for creating a more liveable and climate-resilient city. Antwerp is backing the call to properly insulate roofs and combine them with green features, water retention systems, solar energy and functional uses.

Flat roofs contribute to additional heat in urban areas, despite offering significant potential to help address climate challenges.

Under the Klimaatdakprotocol, cities and construction partners commit to using flat roofs to reduce CO₂ emissions and support climate adaptation. Well-insulated roofs lower emissions, while green roofs help cool the city and boost local biodiversity. Climate roofs also provide practical benefits for residents: they can buffer heavy rainfall and reduce flooding risks. Solar panels generate renewable energy, and roof gardens offer quiet outdoor spaces.

Alderman for the environment Karim Bachar (Vooruit) said: “Our Antwerp roofs offer enormous opportunities. By insulating them, greening them and equipping them with water storage or solar panels, we make our neighbourhoods cooler, greener and healthier. Opening up roof gardens where possible for relaxation and social interaction completes the picture. Every roof we improve, together with residents, organisations and partners, brings us closer to a liveable and future-proof city.”

The Klimaatdakprotocol aligns with the objectives of Antwerp’s Climate Plan 2030. By signing it, the city confirms its commitment to lead by example. In future construction and renovation projects involving municipal buildings, Antwerp will implement climate roofs wherever possible, combining as many elements as feasible: greenery, water retention, solar panels and functional use.

The city also aims to support private property owners in making better use of their roofs. Green roofs are often the first step. Since 2011, Antwerp has required green roofs for new builds and certain renovations. This applies to all roofs of at least 20 square metres with a slope of less than 15 degrees.

Homeowners not subject to this requirement can still access support and expertise through Antwerp’s climate grants. 

One grant covers structural assessments, helping owners determine whether their roof is suitable for a green installation and avoid future issues. The city contributes €250 for family homes and €500 for larger apartment buildings with roofs exceeding 150 square metres.

Another grant supports the installation of biodiverse green roofs. Roofs that meet modern insulation standards and are planted to enhance biodiversity are eligible for a subsidy of €30 per square metre, enabling the use of native plants and improved water retention.

Total climate grant support can reach up to €10,000 for private individuals and €50,000 for associations such as homeowners’ associations.

Residents interested in upgrading their roofs can find information and guidance via the Antwerp Renovates platform, which offers advice on insulation, renovations, green roofs and rainwater management, as well as access to personalised support through the city’s housing and energy advisory service.

On the look of Antwerp

🇧🇪 Blogger, keen vexillologist, train conductor NMBS/SNCB, traveller, F1 follower, friend of Dorothy.

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