How To Install Rolled Roofing Over Shingles

It has just one layer so it goes.

How to install rolled roofing over shingles.

Install a drip edge around the perimeter of the roof. Install the eave piece first then the rake piece over it. After it is unrolled and spread into place over the roof it must be nailed down. A typical roof has three layers a felt layer and two layers of overlapping shingles.

To install roll roofing you ll need to cut the material into long strips of the correct length for your roof and lay it flat. For extra durability you may install roll roofing in two layers. In this video we provide details on how to install roof shingles over existing shingles. At the eave and the rake install u shape drip edge flashing made for reroof jobs.

It also helps if you first install a layer of roofing felt. As with the felt paper it is very important to properly align the roll roofing. The two pieces should meet neatly at the corners. It needs to be nailed down with each nail spaced roughly 6 inches apart.

This aluminum flashing protects the edges of the roof sheathing. Roll roofing is different. Prepare a valley between joined roofs by cutting a strip that is 18 inches wide and covers the entire length of the. Drive nails at high points on the underlying roof the bottoms of the shingles.

Step by step roll roofing installation 1. Position and roll out the roofing carefully because it is not easy to reposition then press it into the cement. 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.

Nail only its top edge the part that is bare of mineral coating. The strips should always be horizontal.