Flat Roof Vapour Barrier Membrane

For all warm flat roofs a fully intact vapour barrier would be required on the room side under the insulation.

Flat roof vapour barrier membrane. 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. Flat roof vapour barrier materials when constructing a flat roof there are two types of materials commonly used. Reduce heat loss and boost energy efficiency with market leading vapour control layers vapour barrier membrane and vapour control barriers. Provided your vapour control layer is intact then there should not be any risk of condensation.

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. There is no requirement for any air gaps. A flat roof vapour barrier such as iko s mvp modified vapour protector offers appropriate moisture protection. Bituminous vapour retarders asphalt mixed with felt or fiberglass or non bituminous vapour retarders plastic.

This is different to breather membranes which allow the movement through the membrane to ensure water vapour can leave the roof space. 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. A vapour control layer or vcl on a warm flat roof sits between the roof decking and the insulation. The notion behind a vapour control layer is to install it on the room.

Looking for pitched roof materials. 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. Below the main roofing layers are the substructure wood concrete or metal insulation plywood underlays vapor barriers etc. Roofing membrane 18mm plywood or osb.

Including flat roof vapour barrier for extra secure roofing solutions.