Vapour Control Layer Flat Roof

Vapour control layers vcl.

Vapour control layer flat roof.

Sika sarnafil watchmead welwyn garden city al7 1bq 01707 394 444. Vapour control layer for a cold roof. The flat roof has 2 roof lanterns. We provide a vapour control layer for flat roof installations as well as heavy duty vapour control layers for a warm 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. 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. The type of 3 layer roof. 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.

If this has not been done then we would recommend that you install one underneath the joists before the plasterboard goes up. The notion behind a vapour control layer is to install it on the room. I have been looking through insurance and they seem to ask about type of flat roofs. I have a 3 layer.

Hi i m in the process of building a single story flat roof extension. 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 or vcl on a warm flat roof sits between the roof decking and the insulation. With any warm flat roof detail such as this a vapour control layer should have been laid on top of the roof deck underneath the insulation.