Install Roof Shingles Over Top Old Roof Shingles

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.

Install roof shingles over top old roof shingles.

Install the eave piece first then the rake piece over it. At the eave and the rake install u shape drip edge flashing made for reroof jobs. Putting new asphalt roof shingles right over old ones. Many arizona homeowners with shingle roofs do decide to roof over their existing shingles because.

When you should tear off your roof and start from scratch instead. Step 3 cover the old shingles. When roofing over your existing shingles can be a good idea. The felt should be secured every six inches with nails or staples.

Why installing new shingles over old shingles can be good. That s also why building codes commonly limit re roofing to no more than two layers. Install a layer of roofing felt over the roof before you begin installing the new shingles. If the old ones are flat and you fill in any missing tabs and you do no more that a total of two layers of shingles yes you can reshingle over old shingles.

The two pieces should meet neatly at the corners. Installing new roof shingles over old effectively doubles the weight of the roofing so you have to make sure your roof structure can handle the extra load. Drive nails at high points on the underlying roof the bottoms of the shingles. Damaged shingles should be removed to check the decking for problems.

Use 1 5 or 1 75 inch roofing nails. Damaged decking will need to be repaired before you can install any new shingles.