How To Install Roll Roofing Over Shingles

Use a starter strip or cut pieces for a starter course.

How to install roll roofing over shingles.

After it is unrolled and spread into place over the roof it must be nailed down. Rip cut the starter strip or starter pieces so that they butt up against the second course of existing shingles and are even with the front edge of the existing roofing. Nail only its top edge the part that is bare of mineral coating. After the eave drip is in place it is time to lay the roll roofing.

Snap a chalk line as a guide for the first layer roofing. Install roll roofing measure 35 inches up from the eaves at several intervals along the roof and mark them. Then set the first course in the cement so it overhangs by about 1 4 inch. Step by step roll roofing installation 1.

Install a drip edge around the perimeter of the roof. This aluminum flashing protects the edges of the roof sheathing. Prepare a valley between joined roofs by cutting a strip that is 18 inches wide and covers the entire length of the. Do not use the eaves as a guide instead because they can be uneven.

It needs to be nailed down with each nail spaced roughly 6 inches apart. As with the felt paper it is very important to properly align the roll roofing.