Depends on the type of roofing shingles but normally you would use an all weather sealant.
Seal roofing nail head.
Make sure the roofing cement extends to each side of the nail head covering it completely.
3 degree electro galvanized steel roofing nails 5 lb pack for applying roofing asphalt shingles insulation board and felt to wood substrates.
Apply a glob of roofing cement to the spatula or putty knife.
Fill small nail holes with silicone caulk or roof cement.
Wipe the glob of roofing cement over the nail head.
Use the grip rite 11 x 1 1 4 in.
The ring shank nail has larger head than the standard nail which enables it to hold shingles in place.
3 use the grip rite 11 x 1 1 4 in.
It will smooth out once it dries.
Don t worry if the glob looks a bit thick.
We have used black jack bull in a tube or tamco makes a roofing chalk called tropicana 21.
Repeat these steps for each of the exposed nail heads.