If you have some shingles that need to be replaced this story gives you some tips and the step to follow when replacing them.
You may have some composition shingles in your garage or shed left over from the original roofing job. If not take along a sample shingle when you buy replacements so that you can match the color.
If the felt underlayment is damaged, cut a piece that is at least 6 inches larger than the damaged area in both directions and slip it into place before replacing the shingle. Sound underlayment is especially important on shingle roof. If you are making repairs at the eaves, you may need to replace a starter strip or starter shingles.
Once you have the repair materials, an hour or less for most repairs
Utility knife, tape measure, flat pry bar, stapler, hammer or roofing hatchet, trowel, caulk gun, nail set
Nailing; using a pry bar, chisel, caulk gun
Buy replacement shingles to match and make preparations for working safely on the roof.
Shingles, roofing cement (in a caulk tube or a can), nails long enough to penetrate the sheathing