Flat Roof Vapour Barrier Membrane

A vapour barrier will then need to be installed to reduce condensation in the roof structure.

Flat roof vapour barrier membrane.

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. Reduce heat loss and boost energy efficiency with market leading vapour control layers vapour barrier membrane and vapour control barriers. Flat roof vapour barrier materials when constructing a flat roof there are two types of materials commonly used. Bituminous vapour retarders asphalt mixed with felt or fiberglass or non bituminous vapour retarders plastic.

A vapour control layer or vcl on a warm flat roof sits between the roof decking and the insulation. Including flat roof vapour barrier for extra secure roofing solutions. Looking for pitched roof materials. A flat roof vapour barrier such as iko s mvp modified vapour protector offers appropriate moisture protection.

There is no requirement for any air gaps. This is different to breather membranes which allow the movement through the membrane to ensure water vapour can leave the roof space. Provided your vapour control layer is intact then there should not be any risk of condensation. A roof design that includes an adhered roof membrane with multiple layers of insulation with board joints offset and staggered over a vapor retarder air barrier helps lower the risk that air and the moisture it carries will infiltrate the roof system.

Roofing membrane 18mm plywood or osb. You ll find pitched roofing products here. To use epdm for a warm deck flat roof construction solid closed cell roof insulation such as kingspan or celotex should be placed on top of the roof deck rather than in between the rafters. The notion behind a vapour control layer is to install it on the room.

Vapour control layers vcl prevent any water from entering or leaving the roof space ensuring that moisture does not transfer between layers or through walls or roofs and build up within the roof or wall space.