Vapour Control Barrier Flat Roof

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 barrier flat roof.

There is no requirement for any air gaps. Including fibreglass roof kits torch on felt and liquid rubber products everything you need for flat roofing is in one place. 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. Comparatively a vapour barrier prevents any movement of vapour or air occurring through the building instead of just limiting it to a controlled level.

At roofing superstore our choice of flat roof materials includes everything you need to create a long lasting weather proof flat roof that performs and looks good too. The notion behind a vapour control layer is to install it on the room. A polythene vapour barrier limits the movement of air and water vapour through a membrane so a vapour control layer is air permeable or vapour permeable. Provided your vapour control layer is intact then there should not be any risk of condensation.

Vapour control layers vcl. For all warm flat roofs a fully intact vapour barrier would be required on the room side under the insulation. However the cross ventilation does not completely remove the moisture vapour in the ceiling void and a vapour control layer sealed at joints and penetrations is required under the insulation and over the plasterboard to provide a barrier against moisture vapour rising up from the room below.