Flat Roof Insulation Vapour Barrier

However note that one should seal the seams here as well.

Flat roof insulation vapour barrier.

Next to that you may also buy a moisture regulating vapour barrier membrane that can manage the damp even better. 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. A flat roof vapour barrier such as iko s mvp modified vapour protector offers appropriate moisture protection. 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. Vapour control layers vcl. We are insulating a flat roof with tapered rigid insulation over a moisture barrier and then capped with modified bitumen. The insulation and vapour barrier can be mechanically fixed using fasteners and washers or a self adhesive vapour barrier such as alutrix can be installed with insulation bonded on top using pu adhesive battens.

A flat roof should be designed to minimise condensation and a condensation risk analysis should be undertaken taking into account positioning of insulating materials vapour control layers ventilation thermal insulation and the choice of materials. However we lose r value where the taper is thinnest and need to insulate under the sheeting. If the roof is insulated with foil faced insulation blankets the aluminium side can serve as a vapour barrier at the same time. Flat roof vapour barrier materials when constructing a flat roof there are two types of materials commonly used.

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.