Tag: Part L air tightness
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More ↗: UK Air Permeability Values: Part L, EPC, NCM & Air tightness TargetsUK Air Permeability Values: Part L, EPC, NCM & Air tightness Targets
Air permeability describes how much air leaks through the building envelope under a specified pressure. In the UK, it is commonly expressed as m³/(h·m²) at…