In warmer weather, tiles can heat up, causing water vapour to form beneath them, in the roof cavity. A vapour control layer is designed to catch this vapour, preventing it from condensing on the insulation or elsewhere in the loft space or attic. We provide a vapour control layer for flat roof installations as well as heavy duty vapour control layers for a warm flat roof. There are a number of different vapour control layer thickness options: our staff can advise on which may be best for your job. If you need a vapour control layer for a flat roof for an affordable price, we have something suitable.