Apply Tar Paper Under Siding

This is a time intensive process and requires all sorts of skill.

Apply tar paper under siding.

It is an age old choice as a weather barrier under roofing and siding. Liquid wrb these tar like liquids are applied with a paint roller or spray equipment and can serve as an air barrier. I am about to replace the weathered tar paper with two new layers of 15 felt before siding the house with cedar clapboards. On walls it has been eclipsed in new construction by various brands of house wrap a woven or spun bonded plastic.

We re in the coastal rainforest of southeast alaska very wet. Polyolefin fabric plastic house wraps typically are made of woven polyethylene or polypropylene fibers. The walls are intended to dry to the outside. When laying sheets of tar paper always lay the sticky glossy side down.

The cap washers are a good idea if the felt paper will be exposed for more than a few days and may be subjected to windy weather that could tear the paper through the nails. Should any water get past the siding properly installed felt paper. Grade d building paper made of asphalt impregnated kraft paper this house wrap is commonly used under stucco siding. The house will have a rain screen gap made of strips of pt plywood.

One side is somewhat sticky though don t expect it to leave a glue like residue on your hands. Felt paper also commonly referred to as tar paper is an underlayment material applied to bare walls before siding is installed. You can use standard roofing nails or cap washers metal or plastic to hold the felt paper in place until covered with siding. If you want vertical drainage with tar paper you have to add treated lumber strips on top of the tar paper.

Check that it is level and aligned and drive staples or cap nails. Working with a helper unroll the paper so it is about 2 inches below the sill plate and pull it taut. In fact many builders disagree on the effectiveness of house wraps altogether and while some builders will only install 15 pound asphalt saturated felt paper underneath exterior siding others swear by plastic fabric house wraps such as typar or tyvek. Siding applied directly over tar paper creates a sandwich effect and can trap water between the siding material and the tar paper.

Tar paper s two sides are noticeably different. Tar paper also known as building felt is tar impregnated paper.