How To Lay Tar Paper On Roof

Roof felt also known as tar paper is a waterproof fiberglass product.

How to lay tar paper on roof.

Place a final piece of tar paper over the top of the roof attaching it so it overlaps the tar paper on both sides of the roof. It improves look and uniformity because your roof deck might not lie perfectly straight or flat a layer of roof paper gives an even uniform surface upon which you can install your shingles. This video contains the. Before applying roofing you ll need to cover the sheathing with roofing felt also often called tar paper most local codes call for using 30 pound felt.

Lay the first course of tar paper lengthwise on the roof so one edge is covering the drip edge nailed to the roof. Before laying roof felt all rotten decking must be replaced. This is a fabric impregnated with asphalt to form a moisture barrier. Unroll the paper on the roof and cut it to the correct length with a utility knife.

It is used for temporary roofing for weatherproofing and as an underlayment under shingles or other permanent roofing materials. It is required to block any rain. Whatever your reason for attaching roof felt you should only do it after cutting your pieces to. Chalk lines should be snapped 33 5 8 above the eave line.

The idea is to make sure water that falls on the roof drips down from paper to paper and off the roof rather than up under the tar paper potentially damaging the roof s wooden structure. Roofing felt prevents the deck from being exposed to the elements before or while the shingles are being applied. It must be covered with waterproofing membrane usually roof felt also called tar paper. Drip edges on the eaves any valley liners and all flashing should be installed before the tar paper is laid.

Whether you re building a new house or putting a new roof on your existing house installing tar paper first helps waterproof the roof and prevent leaks.