The basic purpose of any roof is to provide protection to persons inside a structure from the elements. This purpose is necessary in every part of the world as the roof provides shelter against something as basic as bright sunshine; add to that other changes in weather, such as rain, snow, sleet, hail and high winds.Jul 17, 2017
If any areas of the roof have become severely damaged, it's usually better to remove the old shingles and start from scratch. ... If you're going to add a roof on top of an old one, it's a good idea to remove any loose shingles and apply a new layer of 30-pound roofing felt before laying the new shingles.Dec 7, 2019
Once you've found the leak you can make a temporary leak patch from some plywood or shingle and some roofing tar. Use a putty knife to spread the tar into the leaking hole on the inside of your roof. Place the shingle or plywood onto the tar and spread more of the tar around the edges of your patch.