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roof insulation foam
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France 2026 home renovation regulations
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Latest: MaPrimeRénov’ updates energy renovation subsidies in France
France’s 2026 energy rules require façade insulation of at least R ≥ 3 (m²·K)/W, while preserving vapor permeability with bio‑based materials such as cork, hemp or wood fibre. Mandatory diagnostics for mold, lead, asbest