Vapor Retarder Tpo Roofing

Diffusion versus air movement.

Vapor retarder tpo roofing.

Firestone enverge air and vapor barrier is an asphalt based self sealing wall barrier that provides energy savings and contributes to better air quality for building occupants. Indeed the roofing industry has discussed vapor retarders for decades but only recently focused on air barriers. Options for above and below grade applications are available. To control moisture a vapor retarder may be necessary to protect certain roofing components when high interior humidity is of concern.

Self sealing high quality sbs rubber and asphalt blend. Everyone knows that water in roof systems is never a positive. Thermoplastic means that it becomes plastic upon heating and hardens upon cooling and this is how it seals at the seams. Provides temporary weather protection for 90 days provides high tensile strength and puncture resistance.

Allows for ease of self adhering installation. Choosing the right vapor retarder with the new focus on air barriers designers may be quick to add them to roofing systems. When vapor drive may be expected to form a dew point under the roof membrane or in the insulation. But back in the day multi ply asphalt based vapor retarders that were installed above the roof deck and below the insulation were also acting as very effective air barriers.

Gaf sa vapor retarder is composed of a proprietary formulation of elastomeric styrene butadiene styrene sbs polymer modified bitumen in combination with a high tack self adhesive. Recognize that all vapor retarders are air barriers but not all air barriers are vapor retarders. When high interior relative humidity is present. Carlisle boasts the industry s most comprehensive line of air and vapor barrier products including self adhering sheet membranes spray and roller applied air vapor barriers and fluid applied vapor permeable air barriers.

Tpo stands for thermoplastic polyolefin. Provides low air and vapor permeability. High interior relative humidity is present. Building owners prefer enverge air and vapor barrier as a sustainable option for their buildings due to the reduced maintenance costs attributed to moisture and.

About air vapor barriers. Tri laminate woven polyethylene nonslip uv protected top surface. To control moisture a vapor retarder may be necessary to protect certain roofing components when high interior humidity is of concern. 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.

The topside is surfaced with high strength tri laminate polyethylene film and the underside is surfaced with protective polyolefin release film that is removed during application.