Is Tyvek Vapor Permeable

The unique material science behind Tyvek® allows it to be both water tight and vapor permeable. … So while it’s highly effective at preventing bulk water intrusion, it’s also permeable, or breathable, to allow any water that does find its way into the wall system to find its way back out again as water vapor.

Is house wrap vapor permeable?

Make the Best Choice. A high-performing house wrap has the right balance of air and water resistance and vapor permeability to prevent air and moisture infiltration.

Is Tyvek water resistant?

It is completely waterproof, and keeps all of its strength when wet. It is easy to sterilize, and once made into packaging is able to maintain sterile for many years. For this reason, Tyvek material has been used in a vast variety of contexts over the past 60 years.