Cracked warped missing or broken shingles need to be replaced.
How to fix a leak on your wood shingle roof.
To replace a single shingle first use a chisel and hammer to split it into several narrow pieces then yank them out with pliers.
A shingle that has lifted from the roof can simply be renailed down and the nailheads sealed with roofing cement.
Repair a split shingle by closing the gap between the two pieces nailing them to the roof deck and sealing the crack and nailheads with roofing cement.
Slip a hacksaw blade under the shingle above and cut through the.
If your asphalt shingle roof develops a leak following a heavy rain storm or after being exposed to hurricane strength winds then it is likely that your leak happened due to a missing or damaged shingle.
Diagnosing the cause of a roof leak.
Small nail holes left behind from old vents satellite dish brackets or anything previously attached to the roof can allow water to enter and cause damage for years before leaking is noticed.