Flat Roof Vapour Barrier Material

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.

Flat roof vapour barrier material.

Bituminous vapour retarders asphalt mixed with felt or fiberglass or non bituminous vapour retarders plastic. We ll add a vapor barrier so the moist air does not flow up through the insulation and condense on the roof. A flat roof vapour barrier such as iko s mvp modified vapour protector offers appropriate moisture protection. This threat of condensation creates the possible need for another roof system component.

Traditionally we ve insulated the roof panel to try and keep the temperature on the panel from reaching the dew point. Vapour control layers vcl. The notion behind a vapour control layer is to install it on the room. Vapour retarders are designed to intercept the flow of water vapor into the insulation where it can reduce the insulation s thermal resistance form a source of leaking water and possibly destroy the insulation itself.

The vapour barrier is suitable for both warm and cold deck designs. However we lose r value where the taper is thinnest and need to insulate under the sheeting. Including fibreglass roof kits torch on felt and liquid rubber products everything you need for flat roofing is in one place. We are insulating a flat roof with tapered rigid insulation over a moisture barrier and then capped with modified bitumen.

But a preinstalled membrane may be even more effective at removing condensation. A vapour retarder or vapour barrier. Damplas vapour control layer vcl is intended for use within flat roof structures to prevent the penetration of moisture into structure surfaces and to improve the airtightness of buildings. I live in southern ontario canada where there are significant differentials of temperatures from summer to winter.

A vapour control layer or vcl on a warm flat roof sits between the roof decking and the insulation. The buildup of a warm flat roof starts with a good vapour barrier followed by insulation then more decking or just the roofing materials depends on if you wa. The problem with using. 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.