While routinely used in continental Europe, Vapour Control Layers are often overlooked in the UK. Mould growth, rotted timbers and wet, ineffective mineral wool insulation can be typical results.

The Building Regulations require provision to prevent excessive condensation in roofs and roof voids. The most effective way to avoid condensation in roofs is to prevent as much water vapour as possible reaching the cold side of the thermal insulation.

This can be achieved simply and cost-effectively by using an Icopal Vapour Control Layer on the warm side of the thermal insulation.

Further to the vapour control function, Icopal Vapour Control Layers also help reduce air leakage from buildings - something that is a statutory requirement in buildings of a certain size.