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Insight Horizon Media

Can I put tar paper over Tyvek?

Author

Mia Smith

Published Mar 07, 2026

Can I put tar paper over Tyvek?

Tyvek over Tar Paper: We have already established that there is no issues with moisture sandwiches, what about using Tyvek over a different item like Tar Paper? As long as the tar paper is in real good shape, in most cases you would be fine, as long as neither product gets wet.

Can you put tar paper behind vinyl siding?

The short answer is that felt paper is fine as a weather-resistant barrier behind vinyl siding and will not cause a problem if the siding is installed correctly.

Is tar paper better than Tyvek?

Tyvek offers more permeability but less longevity, and you find it near the exterior siding. Tar paper withstands high moisture levels, but it can crack in freezing temperatures. That’s why you usually find it on the interior walls.

Will spray foam stick to Tyvek?

“I have more and more builders say they put Tyvek® on the walls and roof and then spray foam. There apparently is an adhesive additive for spray foam, which will assist in the foam being able to stick to house wraps or other slick surfaces.

Can I use tar paper as a vapor barrier?

Plastic housewraps have largely replaced asphalt felt as the water-resistive barrier required by codes. Fortunately a number of materials, including traditional asphalt felt (tar paper) have this ability to stop liquid water while remaining “permeable” to water vapor.

Can you use tar paper as house wrap?

The old standby, often called “tar paper,” allows drying with a perm rating of of approximately 5 (more when wet) and blocks water effectively on a vertical wall, making it an effective sheathing wrap .

Which side of tar paper goes up?

When laying sheets of tar paper, always lay the sticky, glossy side down. Tar paper’s two sides are noticeably different. One side is somewhat sticky, though don’t expect it to leave a glue-like residue on your hands. The other side is smooth like paper, and typically contains lettering and line markings.

How long can tar paper be left exposed?

Plystick Plus, our peel-and-stick underlayment, can be left exposed for up to six months. Why Choose Underlayment with Longer Exposure Ratings? There are lots of reasons why you’d want that six months to a year’s worth of exposure time.