Is House Wrap Breathable

How does house wrap work? The unique nonwoven structure of Tyvek HomeWrap makes it breathable, allowing moisture vapor to pass through. This helps to promote drying in wall systems, to help prevent mold and water damage.

Does house wrap breathe?

Fact: Tyvek® helps walls dry faster It’s a breathable, non-perforated, product with microscopic pores that allow moisture vapor to pass through it. … This ability to allow unwanted moisture to escape can allow walls to dry more quickly, to protect against water damage from within.

Does Tyvek let moisture through?

Tyvek® combines the right balance of air and water resistance and vapor permeability. So, when water does find its way into a wall system, the Tyvek® WRB is engineered to allow it to escape as moisture vapor.