Vapour Layer Roof

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.

Vapour layer roof.

To solve this we recommend installing an air vapour control layer avcl such as duponttm airguard control beneath the vapour open quilt insulation. 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. Vapour control layers vcl.

Using a vapour control layer to control condensation. It has transpired that there is no vapour control layer fitted. The vapour control layer vcl often overlooked underrated punctured adlib and sometimes even completely omitted mainly because we re just not sure if it really is all it s cracked up to be after all even if we leave it out altogether the roof shouldn t leak right. However it is important to note that vapour control layer timber frame membrane must be installed in conjunction with a good ventilation system and membranes.

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. Used in roof constructions where the ceiling board is fixed to the rafters. Where the ceiling below a cold pitched roof includes a vapour control layer. Vapour barrier layer to be included in the building of a green roof with thermal insulation.

A vapour control layer or vcl on a warm flat roof sits between the roof decking and the insulation. The roof is an unventilated warm roof design finished with a single ply membrane. Including fibreglass roof kits torch on felt and liquid rubber products everything you need for flat roofing is in one place. Bs6229 2003 gives advice on vapour control layers in flat roofs and the control of condensation within the building generally.

Vapour control layers should be provided in accordance with the design and where required should be. Placed on the warm side of insulation. A vapour control layer is typically installed on the warm side of the insulation to block the warm moist air from entering the roof space. Meets building requirements non ventilated pitched roof systems that use tyvek as roofing underlay satisfy the requirement of approved document c2.

In this case you need to lay a full vapour barrier on top of your flat roof deck before you lay the insulation and your flat roof covering. The purpose of this layer is to control the flow of vapour passing through the structure from the inside of the building to the outside in order to avoid the issue of condensation forming inside the roof assembly.