Here s a great video that explains the process to repair your roof by replacing a missing shingle.
How to fix missing roof shingles.
Seal down any surrounding shingles that may have had their sealant bond separated in the same way.
Loosen and remove the damaged shingles.
Loosen the adhesive underneath the tabs of the damaged shingle then pull them free and discard.
Start by applying a thick bead of roofing sealant under the crack.
If you have shingles leftover from your last roof repair or installation you re in luck.
Slip a hacksaw blade under the shingle above and cut through the.
If a shingle is simply cracked or torn you don t have to replace it just repair it.
Take your shingle to the store and get a bundle of matching shingles.
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.
To replace a single shingle first use a chisel and hammer to split it into several narrow pieces then yank them out with pliers.
If you can t find a perfect match to repair shingles on your roof choose the most compatible shingles available.
Then spread the sealant with a putty knife.
How to replace a damaged shingle.
You will be able to use the same manufacturer approved roofing materials to make the necessary repairs to your home or business.
If shingles are missing or are damaged by wind hail impact or other causes of environmental roof damage you will need to replace them.
In short you will need to replace the entire 3 tab shingle that was torn while protecting the integrity of shingles above and below the one being replaced.
Hopefully you have extra shingles on hand from the original installation to use in such cases.
If the shingles are severely damaged don t try to salvage them.
Press the shingle down and apply a second bead of sealant on top of the crack.
Missing or damaged shingles need to be replaced with matching shingles.
How to replace missing shingles your roof has suffered wind damage.