Vapor Retarder Tpo Roofing

To control moisture a vapor retarder may be necessary to protect certain roofing components when high interior humidity is of concern.

Vapor retarder tpo roofing.

About air vapor barriers. High interior relative humidity is present. Tri laminate woven polyethylene nonslip uv protected top surface. A hot air welder is used to heat the membrane above and below turning it to plastic and making it moldable.

Provides temporary weather protection for 90 days provides high tensile strength and puncture resistance. 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. Thermoplastic means that it becomes plastic upon heating and hardens upon cooling and this is how it seals at the seams. To control moisture a vapor retarder may be necessary to protect certain roofing components when high interior humidity is of concern.

Typically a vapor retarder has to have a perm rating of 1 0 or less to be successful. Provides low air and vapor permeability. 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. Diffusion versus air movement.

Everyone knows that water in roof systems is never a positive. Some air barriers are vapor open and allow moisture to escape. Self sealing high quality sbs rubber and asphalt blend. When vapor drive may be expected to form a dew point under the roof membrane or in the insulation.

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. 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. Recognize that all vapor retarders are air barriers but not all air barriers are vapor retarders. Tpo stands for thermoplastic polyolefin.

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. 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. Indeed the roofing industry has discussed vapor retarders for decades but only recently focused on air barriers.

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.