How To Lay Tar Paper On Roof

How to install roofing tar paper.

How to lay tar paper on roof.

It is used for temporary roofing for weatherproofing and as an underlayment under shingles or other permanent roofing materials. Roof felt also known as tar paper is a waterproof fiberglass product. It must be covered with waterproofing membrane usually roof felt also called tar paper. It is required to block any rain.

Drip edges on the eaves any valley liners and all flashing should be installed before the tar paper is laid. Chalk lines should be snapped 33 5 8 above the eave line. Some roofers prefer to attach felt underlayment with 1 inch roofing nails or special nails with plastic washers but most codes allow staples which are easier to drive. Unroll the paper on the roof and cut it to the correct length with a utility knife.

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

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. Staple it to the plywood with a staple gun placing the staples at 6 to 8 inch intervals along the edges and in the middle of the paper. Roofing felt prevents the deck from being exposed to the elements before or while the shingles are being applied. 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.

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