How To Shingle Roof Over Existing Shingles

How to do it remove caps.

How to shingle roof over existing shingles.

Asphalt roofs typically last 20 to 30 years depending on the installation and shingle quality. So if there are already two layers the choice is made for you. Mark the location of the top of the uncut shingle on the felt. A steel roof is a lifetime investment lasting 50 years or more if it s a good one.

Use 1 5 or 1 75 inch roofing nails. 1st and foremost your existing roof needs to be in reasonable shape. Shingle a roof over existing shingles save 75 give or take. Roofing second layer of shingles roofing.

This is what it looks like when you install a steel shingle roof system over an existing asphalt shingle roof. How to shingle over existing shingles and how to shingle a roof how to install roof shingles shingle layout lines h. Remove air vents and pipe flashings by prying out or unscrewing the fasteners holding the fixture. You need to tear off the roof and install a new one.

A single length of drip edge wraps roof corners with the rake flashing overlapping the eaves for good drainage bottom. The uncut shingle should hang a quarter of an inch over the roof edge. No missing shingles no gaps no holes in the roof no soft spots because of water damage. To shingle on top of existing shingles there are a few things you want to make sure.

Position one of the uncut shingles on top of a trimmed shingle. There are already two layers of shingles on your roof most building codes only allow two layers of any type of roofing on your home. Depending on the type of job the author uses several specialty drip edge profiles including one with an extra long leg designed to cover existing shingles and drip edge at right in top photo. Use a flat pry bar.

Doing it now will make it easier to keep the reroofing job clean. Place the top of each starter shingle firmly against the bottom of the shingle immediately above it and even with the eaves then nail it into place.