Put Shingles Over Old Roof

To level out an existing asphalt shingle roof rip down reduce the height of two courses of shingles as shown in the drawing below.

Put shingles over old roof.

Because asphalt shingles are routinely exposed 5 in rip down the first strip the starter course so that it is 5 in. Installing a new roof over shingles takes less time than tearing off the old roof. Step 3 cover the old shingles. Does it cost more to tear off.

Damaged shingles should be removed to check the decking for problems. Doing it now will make it easier to keep the reroofing job clean. Shingles are designed for flat surfaces. Roofing over your existing roof is not worth it.

Hope you like it. Install a layer of roofing felt over the roof before you begin installing the new shingles. The felt should be secured every six inches with nails or staples. Remove the ridge caps.

They don t do a good job of bridging over gaps dips or humps including the. If you haven t noticed yet we are not fans of shingle overs not at all. 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. Is it okay to put the new shingles right over the old ones.

Has the same manufacturer s warranty. In this video we provide details on how to install roof shingles over existing shingles. Good quality composite shingles can weigh 350 to 450 pounds per square 100 square feet of. Leave the old valley flashing in place and install new over it.

Use a flat pry bar. Remove air vents and pipe flashings by prying out or unscrewing the fasteners holding the fixture. Use 1 5 or 1 75 inch roofing nails. As long as it s done right and under the right conditions installing new shingles over old ones can last as long and look just as good as a complete re roof.

If a shingle is. Over the years we ve seen problems caused by shingle overs. We discuss the nesting method which helps minimize an uneven appear. Looks just as good and lasts as long.

Manufacturers will still warranty the roof for the same amount of time as a re roof as long as it s done by a qualified installer. Here is a video on how we lay a second layer of asphalt shingles over existing asphalt shingles. Why not add new roof shingles over old. How to do it remove caps.