Urethane roof cement is an excellent product that can help you patch holes on corrugated metal roofing.
Roof nail hole repair.
Dampen a rag with acetone and wipe the area clean.
Use a high grade polyurethane caulk not an acrylic or water based caulk.
Holes in roofing felt are quite common here we repair a hole in some roofing felt that is underneath the tiled roof.
There s really no fix other than replacing the damaged vents.
In most cases you can remove nails under the shingles on both sides of the vent to pull it free.
Replace them with rubber washered screws.
Patch the nail or screw holes by slipping a piece of roof flashing underneath the shingle.
Most roofers would just lift the tab and put a little squirt of asphalt roofing cement dispensed from a caulk gun on the hole before folding the tab back down.
Allow the corrugated roofing to dry completely before you embark on repair.
However a nail pop is perhaps a symptom of a larger problem and while you re up there i suggest inspecting the entire roof.
Another option would be to drive the nail perhaps using a nail set and then caulk the tear in the shingle above.
Fill small nail holes with silicone caulk or roof cement.
Rag sometimes it is better to repair a metal roof than to replace it.
Add a bead of caulk or roof cement to the top and bottom edge of the flashing to keep it in place.
There will be nails across the top of the vent too.
Also look for pulled or missing nails at the base s bottom edge.
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There are lots of ways to repair nail holes in asphalt shingles.
Hammer a new nail into the roof about 1 inch above the hole from the previous nail.
Smaller nail holes will be permanently fixed by this method standard roofing nails would be either 3 8 inch or 1 2 inch making a hole 3 8.
Patching materials for metal corrugated roofing sheets.