Vapour Control Layer Warm Roof

The roof is an unventilated warm roof design finished with a single ply membrane.

Vapour control layer warm roof.

The vcl is easier to maintain in a warm roof construction as it s generally out the way of the dangers of plasterboard fixings and downlighters. The architect plans stated requirement for a vapour control layer below the insulation or a 3 in 1 insulation board including vapour control layer and an additional foil backed plasterboard. A vapour control layer helps you shield your building from the consequences of condensation. Vapour control layers should be provided to warm roofs and.

This can be made of polyethylene membrane bitumen sheet polymeric foil or even be a cheap easy to apply self adhesive sheet. Reduce heat loss and boost energy efficiency with market leading vapour control layers vapour barrier membrane and vapour control barriers. All warm flat roofs must also have a vcl vapour control layer inserted between the top decking and the first layer of insulation. Condensation is generated when warm moist air rises and condenses into a liquid on contact with the cooler areas above the insulation.

Often the vcl in a warm roof is bonded to a timber substrate which helps the integrity however in a warm roof the vcl has two important functions. Where the ceiling below a cold pitched roof includes a vapour control layer the design should ensure adequate ventilation is provided to the habitable areas to prevent condensation problems in the home. Warm roof with vapour control layer field area upstand bituminous waterproofing. 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. Vapour control layers are positioned to the inside of the insulation in order to minimise the amount of warm moist air entering the construction. You ll find pitched roofing products here. A vapour control layer or vcl on a warm flat roof sits between the roof decking and the insulation.

20 year system a primer sopradere quick b vapour control layer sopravap alu activa 2 c insulation adhesive coltack evolution ca. It has transpired that there is no vapour control layer fitted. Much like the cold roof it stops the transfer of warm moist air from inside the building into the warm roof layers. Breather membranes are positioned to the outside of the insulation acting as a weather barrier while still allowing moisture particles to escape from the inside.

Placed on the warm side of insulation used in roof constructions where the ceiling board is fixed to the rafters. We re proud to bring you a range of choice from novia s excellent dual use foil tape to powerlon s ultrablock air barrier and plenty more besides.