Flat Roof Vapour Barrier Material

The vcl also restricts the movement of warm moist air and improves building insulation.

Flat roof vapour barrier material.

The vapour barrier is suitable for both warm and cold deck designs. 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. The problem with using. Bituminous vapour retarders asphalt mixed with felt or fiberglass or non bituminous vapour retarders plastic.

But a preinstalled membrane may be even more effective at removing condensation. 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. However we lose r value where the taper is thinnest and need to insulate under the sheeting. This threat of condensation creates the possible need for another roof system component.

A vapour control layer or vcl on a warm flat roof sits between the roof decking and the insulation. I live in southern ontario canada where there are significant differentials of temperatures from summer to winter. We are insulating a flat roof with tapered rigid insulation over a moisture barrier and then capped with modified bitumen. Vapour control layers vcl.

A vapour retarder or vapour barrier. I have recently finished installing a celotex warm roof to my house i have several sheets left over my flat roof extension needs to be recovered and insulated also as a warm roof can i use the 100 mm ga 4000 insulation boards i have left over for this project if so would i need to use a vapour control barrier or would taping the joints act. A flat roof vapour barrier such as iko s mvp modified vapour protector offers appropriate moisture protection. Flat roof vapour barrier materials when constructing a flat roof there are two types of materials commonly used.

The notion behind a vapour control layer is to install it on the room. Traditionally we ve insulated the roof panel to try and keep the temperature on the panel from reaching the dew point. Including fibreglass roof kits torch on felt and liquid rubber products everything you need for flat roofing is in one place. 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.