Put Shingles Over Old Roof

Over the years we ve seen problems caused by shingle overs.

Put shingles over old roof. 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. They don t do a good job of bridging over gaps dips or humps including the. If a shingle is. Step 3 cover the old shingles.

Shingles are designed for flat surfaces. Hope you like it. Because asphalt shingles are routinely exposed 5 in rip down the first strip the starter course so that it is 5 in. Doing it now will make it easier to keep the reroofing job clean.

Use a flat pry bar. If you haven t noticed yet we are not fans of shingle overs not at all. How to do it remove caps. To level out an existing asphalt shingle roof rip down reduce the height of two courses of shingles as shown in the drawing below.

Installing a new roof over shingles takes less time than tearing off the old roof. Good quality composite shingles can weigh 350 to 450 pounds per square 100 square feet of. Install a layer of roofing felt over the roof before you begin installing the new shingles. Why not add new roof shingles over old.

We don t recommend them nor do we do them. Leave the old valley flashing in place and install new over it. In this video we provide details on how to install roof shingles over existing shingles. The felt should be secured every six inches with nails or staples.

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. Use 1 5 or 1 75 inch roofing nails. Is it okay to put the new shingles right over the old ones. If you need to redo your roof you might be tempted to save some money by having another layer installed over the existing shingles.

Remove air vents and pipe flashings by prying out or unscrewing the fasteners holding the fixture. Has the same manufacturer s warranty. Remove the ridge caps. Damaged shingles should be removed to check the decking for problems.

Roofing over your existing roof is not worth it. Damaged decking will need to be repaired before you can install any new shingles. We discuss the nesting method which helps minimize an uneven appear. Here is a video on how we lay a second layer of asphalt shingles over existing asphalt shingles.