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.
Fixing holes interior roof.
Fill small nail holes with silicone caulk or roof cement.
Use a reciprocating saw to cut a square or rectangle shape around the hole and remove all splintered wood.
In some cases a roof replacement might be necessary.
Repairing a roof leak from the inside is a temporary fix only.
And exposed misplaced roofing repair nails should be pulled and the holes patched.
However you can conceal them with a patch of matching cloth.
Cigarette burns on the roof of a car are considered permanent damage.
A hole from tree damage will be oddly shaped and splintered.
Walk carefully on the ceiling joists in the attic or use a sheet of plywood to walk on so you will not accidentally put a hole in the ceiling panel.
Cut the plywood in half between the rafters if the hole is big enough.
You might find holes left over from a satellite dish or antenna mounting brackets or just about anything.
If the hole is a cutout for a vent the wood may be ready for repair.
Tiny holes in shingles are sneaky because they can cause rot a leaky roof and other damage for years before you notice the obvious signs of a leak.
They cannot be fixed without having a specialist who repairs car interiors replace the material from the entire roof with new cloth or vinyl.