When i lived in destin fla on the coast people lost alot of there shingles from hurricanes and strong winds. I had just built a 40x40 boat house plywood tar paper and new set of shingles. My neighbor who has been a plumber for 45 years told me to shoot a s bead of gutter adhesive under shingles. So I went down to home depot purchased myself some butyl gutter adhesive and applied. He said that my whole roof would come off before I lost another shingle. About 2 months later hit by Hurricane never lost single shingle. Everyone else had back yard full of shingles from fro t side of houses. So if you have any broken shingles or need to replace any. I would recommend this instead of blackk jack tar. This same stuff they use to attach gutters to your trim on house. If you have ever tried to remove it you will understand how strong this stuff is
