Tpo stands for thermoplastic polyolefin.
Vapor retarder tpo roofing.
Tri laminate woven polyethylene nonslip uv protected top surface.
Some air barriers are vapor open and allow moisture to escape.
Everyone knows that water in roof systems is never a positive.
A hot air welder is used to heat the membrane above and below turning it to plastic and making it moldable.
Options for above and below grade applications are available.
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.
When high interior relative humidity is present.
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.
When vapor drive may be expected to form a dew point under the roof membrane or in the insulation.
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.
High interior relative humidity is present.
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.
Choosing the right vapor retarder with the new focus on air barriers designers may be quick to add them to roofing systems.
Recognize that all vapor retarders are air barriers but not all air barriers are vapor retarders.
Thermoplastic means that it becomes plastic upon heating and hardens upon cooling and this is how it seals at the seams.
Provides low air and vapor permeability.
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.
Typically a vapor retarder has to have a perm rating of 1 0 or less to be successful.
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.
Allows for ease of self adhering installation.
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.
Indeed the roofing industry has discussed vapor retarders for decades but only recently focused on air barriers.
To control moisture a vapor retarder may be necessary to protect certain roofing components when high interior humidity is of concern.
About air vapor barriers.
