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.

As with the felt paper it is very important to properly align the roll roofing. Mark a chalk line to identify the end of your first layer. This aluminum flashing protects the edges of the roof sheathing. Use a trowel to scoop up the roofing cement.

Spread the roofing cement along the. Do not use the eaves as a guide instead because they can be uneven. Then set the first course in the cement so it overhangs by about 1 4 inch. Position and roll out the roofing carefully because it is not easy to reposition then press it into the cement.

Installing the rolled roofing 1. Apply roofing cement to the roof. Install a drip edge around the perimeter of the roof. Cut the rolled roofing.

After it is unrolled and spread into place over the roof it must be nailed down. As long as the plywood under the shingle roof is in good condition this way can provide many benefits. Attach with nails along the top edge of the strip. Install roll roofing measure 35 inches up from the eaves at several intervals along the roof and mark them.

Use a trowel to spread roofing cement over half or more of the strips. Step by step roll roofing installation 1. Snap a chalk line as a guide for the first layer roofing. Prepare a valley between joined roofs by cutting a strip that is 18 inches wide and covers the entire length of the.

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. 3 install 1x4 purlins down over the shingles before installing the metal roof the third way to install a metal roof over shingles is by applying 1x4 purlins over the shingle roof. Nail only its top edge the part that is bare of mineral coating. It needs to be nailed down with each nail spaced roughly 6 inches apart.