Roofing Shingles Over Old

The felt should be secured every six inches with nails or staples.

Roofing shingles over old.

Install a layer of roofing felt over the roof before you begin installing the new shingles. How to do it remove caps. Roofing second layer of shingles roofing. Leave the old valley flashing in place and install new over it.

Doing it now will make it easier to keep the reroofing job clean. Good quality composite shingles can weigh 350 to 450 pounds per square 100 square feet of. Damaged decking will need to be repaired before you can install any new shingles. But if the current.

Remove air vents and pipe flashings by prying out or unscrewing the fasteners holding the fixture. Because asphalt shingles are routinely exposed 5 in rip down the first strip the starter course so that it is 5 in. Shingles are designed for flat surfaces. This means the total roof weight was probably greater when the previous layer of shingles was installed than the new metal roofing.

But unless the sheathing is extensively damaged or the structure can t support the weight of another layer of roofing a better solution is to apply a new layer of shingles right over the old one. To level out an existing asphalt shingle roof rip down reduce the height of two courses of shingles as shown in the drawing below. Use a flat pry bar. If a shingle is.

Remove the ridge caps. Why not add new roof shingles over old. 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. 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.

How to shingle over existing shingles and how to shingle a roof how to install roof shingles shingle layout lines h. Step 3 cover the old shingles. Asphalt over asphalt is not advisable. Damaged shingles should be removed to check the decking for problems.