In this case a torn shingle above a seam your roof will leak if you have just one shingle missing.
How to fix missing shingles on a roof.
Determine how many nails you have on your shingle piece.
Then spread the sealant with a putty knife.
To replace a single shingle first use a chisel and hammer to split it into several narrow pieces then yank them out with pliers.
Because a missing shingle left unfixed could lead to a much bigger roof leak especially in heavy rain.
Press the shingle down and apply a second bead of sealant on top of the crack.
Merely apply three small spots of asphalt plastic roof cement under the new shingle s tabs evenly spaced along the shingle length and press the shingle flat down into place.
You will be able to use the same manufacturer approved roofing materials to make the necessary repairs to your home or business.
Loosen and remove the damaged shingles.
On the other hand.
If not you may need to go out and purchase a new bundle of shingles in a lumberyard or home improvement store costing up to 20 for a 100 ft square.
If the shingles are severely damaged don t try to salvage them.
Take out the nails.
If a shingle is simply cracked or torn you don t have to replace it just repair it.
Carefully pry up the shingle until you find the nail.
You may have a missing shingle that does not straddle a lower shingle seam.
Don t bend the shingles back too far as you ll break them more.
Seal down any surrounding shingles that may have had their sealant bond separated in the same way.
Slip a hacksaw blade under the shingle above and cut through the.
Start by applying a thick bead of roofing sealant under the crack.
Just remove them and replace them with new shingles of a similar style to the rest of the shingles on the roof.
Pry at it with a screwdriver until you can pry it out with a crowbar.
Also remove any other nails that are exposed from the damage.