Visqueen Vapour Barrier is used to omit the risk of interstitial condensation within a structure as well as improving the general airtightness of the building. Visqueen Vapour Barrier restricts the passage of warm, moist air from within the building from permeating in to the structure or the roof. It is commonly used within timber frame housing as well as commercial buildings. Visqueen Vapour Barrier is manufactured using virgin polyethylene.