Flat Roof Vapour Barrier Membrane

There is no requirement for any air gaps.

Flat roof vapour barrier membrane.

Roofing membrane 18mm plywood or osb. A vapour barrier will then need to be installed to reduce condensation in the roof structure. The notion behind a vapour control layer is to install it on the room. A flat roof vapour barrier such as iko s mvp modified vapour protector offers appropriate moisture protection.

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. 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. Built up roof membranes bur built up roof membranes referenced by the acronym bur have been used reliably on flat roofs for many decades. Reduce heat loss and boost energy efficiency with market leading vapour control layers vapour barrier membrane and vapour control barriers.

Colour of outer membrane light coloured membranes reflect more sunlight and therefore have lower levels of heat transfer to the roof than the same roof with a dark membrane. A vapour control layer or vcl on a warm flat roof sits between the roof decking and the insulation. 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. You ll find pitched roofing products here.

Insulation location is it above the deck within the deck under it or a mix of both. This is different to breather membranes which allow the movement through the membrane to ensure water vapour can leave the roof space. Bituminous vapour retarders asphalt mixed with felt or fiberglass or non bituminous vapour retarders plastic. Provided your vapour control layer is intact then there should not be any risk of condensation.

Flat roof vapour barrier materials when constructing a flat roof there are two types of materials commonly used. Below the main roofing layers are the substructure wood concrete or metal insulation plywood underlays vapor barriers etc. Including flat roof vapour barrier for extra secure roofing solutions.