That s because this type of roof shingles standard 3 tab asphalt shingles are installed side by side with the next upper row of shingles covering the side seams.
How to install missing roof shingles.
Pry up the nails that hold down.
Start by laying asphalt felt or other underlayment over the roof.
You ll see the first row of nails beneath.
Repeat this procedure for the remaining three nails.
Where one shingle tab blew off your roof you have a 1 in 3 chance that the missing shingle was sitting directly above an open seam between the shingles below.
Install new flashing metal.
In our case it was a laminated ny driftwood bundle for 25 dollars at roofmart.
Using a flat bar separate the tabs of overlapping shignles 2 rows above and 1 2 shingles left and right so you can completely remeove the damaged shingle.
Install the new shingle.
Using your staple gun secure the felt to the roof.
Most shingles have pre cut holes for nails usually three per shingle.
If the shingles are backed with adhesive strip remove the covering and push them into place then nail them to secure them.
Once the nail pops up about 1 4 in remove the pry bar press the shingle down and pull out the nail.
Place a new shingle in the same position as the shingle you removed.
Overlap each row at least 3 to 4 inches.
If you live in an area with inclement weather you should consider using a special ice and water protector.