Roof Vapour Barrier Membrane

A vapor retarder is a material or system that is designed as part of the roof system to substantially reduce the movement of water vapor into the roof system where it can condense.

Roof vapour barrier membrane.

Self adhesive air and vapor barrier membrane blueskin sa is a self adhering membrane consisting of an sbs rubberized asphalt compound laminated on a blue polyethylene film. Damage from water condensation due to water vapour movement called water vapour drive can wreak havoc on even the sturdiest of built structures and threaten the effectiveness of insulation. Impermeable to air moisture vapor and water blueskin sa is designed to install easily on a variety of prepared substrates. A vapour barrier is an important component in building construction.

Its purpose is to help prevent water vapour from reaching building walls ceilings attics crawlspaces or roofs where it can condense and cause building materials to rot or grow mould. Typically a vapor retarder has to have a perm rating of 1 0 or less to be successful. That reduction of air and moisture infiltration can then help improve roof longevity. Air and vapor barrier membrane redzone.

Show the product. There is often confusion between air barriers and vapors retarders. Everyone knows that water in roof systems is never a positive. Sopravap r is an sbs modified bitumen vapor barrier for use in approved multi ply membrane and flashing assemblies.

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. The purpose of vapour barriers. When discussing air barriers roofing membranes and the building envelope another important topic comes to mind. Moisture in homes is unavoidable making moisture in wall cavities nearly inevitable and dangerous if not properly addressed.

Sopravap r is composed of a proprietary formulation of elastomeric styrene butadiene styrene sbs polymer modified bitumen.