Install Roof Shingles Over Top Old Roof Shingles

Can you put new asphalt roof shingles right over old ones.

Install roof shingles over top old roof shingles.

You can save money because there s no dump fee for removing your old roofing and there s no need for additional felt paper over the old roof. Damaged decking will need to be repaired before you can install any new shingles. Install the eave piece first then the rake piece over it. 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.

When you should tear off your roof and start from scratch instead. Putting new asphalt roof shingles right over old ones. Why installing new shingles over old shingles can be good. When roofing over your existing shingles can be a good idea.

That s also why building codes commonly limit re roofing to no more than two layers. 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. Many arizona homeowners with shingle roofs do decide to roof over their existing shingles because. Drive nails at high points on the underlying roof the bottoms of the shingles.

The felt should be secured every six inches with nails or staples. The two pieces should meet neatly at the corners. Let s start with the good. Use 1 5 or 1 75 inch roofing nails.

At the eave and the rake install u shape drip edge flashing made for reroof jobs. Step 3 cover the old shingles.