Roofing Shingles Over Old

Because asphalt shingles are routinely exposed 5 in rip down the first strip the starter course so that it is 5 in.

Roofing shingles over old.

Remove the ridge caps. Why not add new roof shingles over old. Damaged shingles should be removed to check the decking for problems. One important thing to remember when you re deciding what type of roof to buy is that new asphalt shingles shouldn t be placed on top of old asphalt shingles.

Damaged decking will need to be repaired before you can install any new shingles. Leave the old valley flashing in place and install new over it. Good quality composite shingles can weigh 350 to 450 pounds per square 100 square feet of. This means the total roof weight was probably greater when the previous layer of shingles was installed than the new metal roofing.

Shingles are designed for flat surfaces. Current shingles are curling or in bad shape the new shingle roof should lay flat on your old one. Asphalt over asphalt is not advisable. Roofing second layer of shingles roofing.

Use a flat pry bar. Install a layer of roofing felt over the roof before you begin installing the new shingles. To level out an existing asphalt shingle roof rip down reduce the height of two courses of shingles as shown in the drawing below. Done correctly a reroof job will look as good and last as long as a new roof for a lot less money and a lot less hassle.

But if the current. Step 3 cover the old shingles. They don t do a good job of bridging over gaps dips or humps including the. The felt should be secured every six inches with nails or staples.

How to do it remove caps. If a shingle is. How to shingle over existing shingles and how to shingle a roof how to install roof shingles shingle layout lines h. Remove air vents and pipe flashings by prying out or unscrewing the fasteners holding the fixture.