Vapour Barrier Insulation Explained
The build-up of a warm flat roof starts with a good vapour barrier followed by insulation then more decking or just the roofing materials depending on if you want the roof soft or solid.
Why a Vapour Control Layer is Essential in a Flat Roof
A vapour control layer helps you shield your building from the consequences of condensation. Condensation is generated when warm moist air rises and condenses into a liquid on contact with the cooler areas above the insulation. The notion behind a vapour control layer is to install it on the room side of the insulation so it stops the passage of warm moist air entering the structure.