Asked by: Bernadi Jarrigehome and garden indoor environmental quality
How long does Tyvek last uncovered?
Last Updated: 1st February, 2020
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Then, does Tyvek deteriorate?
Whether it's 30 year old Tyvek or 30 year old felt/tar paper, these materials don't last a lifetime and fail well before most people thought they would. The problem with Tyvek failing or tar paper failing behind a wall assembly is that it will then allows moisture get to the OSB sheathing and begin to rot that.
Also Know, is Tyvek the best house wrap? Originally, asphalt-laden felt paper was thought to be the best type of house wrap on the market. In fact, it's still available, along with other house wrap solutions. However, Dupont's Tyvek HomeWrap® is considered by most in the building profession to be the industry leader.
Similarly, does Tyvek stop wind?
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.
Is it OK to use two layers of Tyvek?
When used as the outermost layer in a two-layer system with Tyvek® wrap as the innermost layer, the properties of the black paper may prove beneficial, especially when the cladding is an exterior cement plaster or adhered-masonry veneer.