Subsequently, one may also ask, does Tyvek help insulation?
This helps wall insulation perform to its stated R-Value. At the same time, Tyvek® WB allows moisture vapor to pass through, to provide control of condensation in wall structures and reduce the risk of damage to insulation, as well as protect against mold, mildew and wood rot.
Likewise, is Tyvek considered an air barrier? Staple-up WRBs are not the best air barriers “It is well known that staple-up housewraps like Tyvek don’t make the best air barriers,” he says. “At least they are challenging, at best, to detail as an air barrier.
Thereof, does Tyvek add R value?
Do Tyvek® weather barriers have an R–value? No; however, properly installed Tyvek® weather barriers help protect against loss of R–value in insulation due to wind washing. Even at wind speeds of 5 mph, a wall without an air barrier retains less than 40% of its original installed R–values.
What is the purpose of Tyvek?
Tyvek weather barriers and related products, like sealants and flashing tape, are used to help create physical separation between the interior and exterior of homes and commercial buildings. It can reduce air and water infiltration to help prevent drafts and water damage, but it is also vapor permeable.