Asked by: Bernadi Jarrige
home and garden indoor environmental quality

How long does Tyvek last uncovered?

Last Updated: 1st February, 2020

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Tyvek HomeWrap, Tyvek DrainWrap and Tyvek StuccoWrap should be covered within 120 days (4 months). Tyvek CommercialWrap should be covered within 270 days (9 months). The importance is covering DuPont Tyvek is based on the UV exposure.

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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.

Related Question Answers

Jayone Pander

Professional

Does it matter which side of Tyvek faces out?

If you install it on the inside BACKWARDS (the Tyvek name facing the wall) moisture will still be able to penetrate the outside wall but will not go thru the Tyvekin that case it would act like traditional plastic sheeting.

Mencia Shtull

Professional

How do you secure Tyvek?

To install Tyvek, start by positioning a roll at the first stud on the outside wall, leaving a 12 inch overlap around the corner of the house. Then, unroll the Tyvek and secure it with nails every 12 inches along each stud.

Gados Killer

Professional

Is Tyvek waterproof?

A: Tyvek® is waterproof. Its water resistance is not water proof. Generally, hydrostatic pressure index is used to indicate the waterproof performance of Tyvek® material.

Sumon Kousar

Explainer

Is Tyvek a moisture barrier?

DuPont Tyvek® DrainWrap is a moisture barrier designed to provide enhanced drainage in areas subject to extreme, wind driven rain. It combines the superior air and water resistance, vapor permeability and strength of Tyvek® with a vertically grooved surface, to help channel water safely to the outside.

Manoel Levett

Explainer

What is the difference between Tyvek and Typar?

Typar® Building Wraps has a lower perm rating compared to Tyvek® HomeWrap®; so, a wall covered with Typar® can take longer to dry, which increases the risk of mold, mildew, and rot. Tyvek® HomeWrap® has a drainage plane so can manage bulk water better than Typar® Building Wrap, that does not have a drainage plane.

Carlena Rumoroso

Explainer

What is the R value of Tyvek house wrap?

How can you prevent air and moisture from getting inside your home? Use Tyvek® HomeWrap® weatherization system underneath your siding, stucco or brick. The average wall has 3-1/2 inches of insulation which, under ideal conditions, has an installed R- value of R-14.

Zuzanna Urrutume

Pundit

Does Tyvek grow mold?

No tyvek, but instead an interior moisture/air barrier as in poly just behind the drywall. In both instances the insulation is soaked and there is condensation on the poly(framing side) and mold growing rampant.

Lauran Jenisch

Pundit

Can I Staple Tyvek house wrap?

Tyvek says you can use 4 staples per 9 feet of house wrap if you tape over them an apply the siding right away. But a cap stapler is better.

Agnus

Pundit

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.

Yanai Jennerjahn

Pundit

What can I use instead of Tyvek?

Tar Paper. Tar paper is a thick, heavy paper impregnated with tar. As long as it is not exposed to sun or wind, it does not deteriorate easily. As alternatives to Tyvek, heavier tar paper can be used for roofing and lighter tar paper as a housewrap.

Bjorn Incorvaia

Teacher

Are house wraps worth it?

Your vinyl siding will perform as the primary defense against moisture and air leaks, but your house wrap comes in strong as a secondary defense. This will help your house wrap perform better and if you're already siding your house you may as well include it as installing it later will require a complete re-siding.

Amalya Rasines

Teacher

Is tar paper better than Tyvek?

In general, non-perforated housewraps (Tyvek, Amowrap, and R-Wrap) are considerably more permeable to water vapor, ranging from 48 to 60 perms, than perforated housewraps. Water resistance. All sheathing wraps, including asphalt felt paper, will effectively shed water on vertical surfaces.

Soliman Kotschau

Teacher

Does house wrap breathe?

Housewraps provide a vapor-permeable layer that resists liquid water from the outside, while also allowing water vapor to escape the assembly, enabling the wall to “breathe” (for example, if water vapor is driven from the interior to the exterior during a heating season, the housewrap will allow the vapor to escape).

Shawnee Feyh

Teacher

How much does Tyvek cost?

The maximum reported cost of Tyvek house wrap is $0.97 per square foot. The minimum reported cost of Tyvek house wrap is $0.41 per square foot.

Hadjer Arejola

Reviewer

Can I use roofing felt as house wrap?

No, you should not use roofing felt as a house wrap for siding, but you can use GAF underlayment call Deck Armor for wrapping the exterior of a home before siding is installed. It's both breathable, which will help solve problems with moisture and waterproof.

Dovile Villarruel

Reviewer

What kind of house wrap should I use?

House Wrap Types
  • Asphalt felt (tar paper)—The standard requirement is Type 1 felt meeting ASTM D 226 standards.
  • Grade D building paper—Made of asphalt-impregnated kraft paper, this house wrap is commonly used under stucco siding.
  • Polyolefin fabric—"Plastic" house wraps typically are made of woven polyethylene or polypropylene fibers.

Marisol Garcia Izquierdo

Reviewer

What is Tyvek paper used for?

Tyvek (/ta?ˈv?k/) is a brand of flashspun high-density polyethylene fibers, a synthetic material; the name is a registered trademark of the DuPont company, known for their production of chemicals and textiles. Tyvek is often used as housewrap, a synthetic material used to protect buildings during construction.

Quan Kowalzyk

Supporter

How many layers does a Housewrap have?

Housewrap is "breathable" by design so you won't trap moisture anywhere. You could build a wall with ten layers of housewrap and it would be more durable, not less.

Rahila Vang

Supporter

Can you put fanfold insulation over Tyvek?

Of course, you can always elect to put both Tyvek® HomeWrap® and exterior fanfold insulation on your home, giving it double protection without having to make the choice. It may cost a little more initially, but it could save you down the road in both damages and annual heating bills.