Install a drip edge around the perimeter of the roof.
How to install roll roofing over shingles.
As with the felt paper it is very important to properly align the roll roofing.
Then set the first course in the cement so it overhangs by about 1 4 inch.
It needs to be nailed down with each nail spaced roughly 6 inches apart.
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.
Use a trowel to spread roofing cement over half or more of the strips.
After the eave drip is in place it is time to lay the roll roofing.
Use a starter strip or cut pieces for a starter course.
Position and roll out the roofing carefully because it is not easy to reposition then press it into the cement.
Prepare a valley between joined roofs by cutting a strip that is 18 inches wide and covers the entire length of the.
Snap a chalk line as a guide for the first layer roofing.
Attach with nails along the top edge of the strip.
Nail only its top edge the part that is bare of mineral coating.
Step by step roll roofing installation 1.