How Much Over Lay On Tar Paper Roofing

The answer is the number of square feet of roofing tar paper you need to purchase.

How much over lay on tar paper roofing.

Roof felt also known as tar paper is a waterproof fiberglass product. The black rolls of roof paper or felt are made with asphalt and are normally available in rolls. As long as the wood on your roof is in good condition you can go ahead and put tar paper down. In roofing and applying felt paper there is always extra left over.

Make sure the rolls overlap by at least four inches and staple them into place on the wood. And even though it is thinner it is just as strong as felt and less resistant to ripping. You will need just under 1 2 of a roll. Chalk lines should be snapped 33 5 8 above the eave line.

Good luck on your project. Whatever your reason for attaching roof felt you should only do it after cutting your pieces to the appropriate size and cleaning and. Beveled wood pieces called horsefeathers must be laid along the thick edges of the shakes to make a fairly flat surface. This paper is a new and in some aspects improved material for roofing underlayment.

The felt provides a layer of additional weather protection between the roofing finishing material shingles tiles and the roof decking. It s thinner lighter and a single roll can cover much more area than a similarly sized roll of felt. Multiply the width by the height for the square footage of each section then add the totals. Drip edges on the eaves any valley liners and all flashing should be installed before the tar paper is laid.

Before you reshingle a roof read our step by step guide for adding new shingles over old ones. The most common size width for rolls of roofing paper is 36 inches. Therefore a 2 inch overlap provides redundancy at the edges where the barrier is weakest. Roofing felt is required to overlap 2 inches over the lower felt course.

Even if there s older tar paper in place you should simply rip it off and replace it. This will help give you a moisture barrier on the roof. Buy about 10 percent. The specs on the website say that this will cover 432 sqft.

Video of the day. After this lines should be snapped every 34 as you move up the roof. Your math 10 x20 200 sqft.