How To Shingle Roof Over Existing Shingles

If a shingle is.

How to shingle roof over existing shingles.

Use the chalk line to mark the line at that spot across the roof. Remove air vents and pipe flashings by prying out or unscrewing the fasteners holding the fixture. A steel roof is a lifetime investment lasting 50 years or more if it s a good one. Asphalt roofs typically last 20 to 30 years depending on the installation and shingle quality.

A single length of drip edge wraps roof corners with the rake flashing overlapping the eaves for good drainage bottom. Remove the ridge caps. 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. This is what it looks like when you install a steel shingle roof system over an existing asphalt shingle roof.

How to do it remove caps. Position one of the uncut shingles on top of a trimmed shingle. To shingle on top of existing shingles there are a few things you want to make sure. No missing shingles no gaps no holes in the roof no soft spots because of water damage.

So if there are already two layers the choice is made for you. Use 1 5 or 1 75 inch roofing nails. How to shingle over existing shingles and how to shingle a roof how to install roof shingles shingle layout lines h. You need to tear off the roof and install a new one.

Doing it now will make it easier to keep the reroofing job clean. Roofing second layer of shingles roofing. Mark the location of the top of the uncut shingle on the felt. 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. 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.