Vapour Control in Roofing Systems: A Critical Detail for Long-Term Performance
In thermally insulated roof assemblies, effective vapour control is essential to prevent interstitial condensation, maintain insulation performance and protect the roofing system from premature degradation. This article examines the role of vapour barriers and vapour control layers (VCLs), highlighting key design and regulatory considerations that are often underestimated but play a crucial role in ensuring the long-term durability of the roof assembly
