You can scratch around the hole with steel wool as abrading it will help it take the adhesive better.
Repair holes in tin roof.
Strive to clear away as much of the rust as you can.
For rust that proves difficult to clear apply some mineral oil onto the rusted areas with paper towels.
Next cut a patch from a sheet of metal roof panel slightly larger than the size of the hole that needs to be patched.
A hole in a metal roof system can be caused by any number of sources the hole may be from deterioration and rust or it may be from something falling onto the roof surface such as a large branch.
Repairing nail holes in a metal roof is an inexpensive alternative to replacing portions of the roof.
3 cut a piece of polyester mesh slightly.
Inspect the roof thoroughly to find all holes that require repair.
Repairing holes in a roof requires that you to go on the roof itself so if this is a problem hire a professional to do the repairs.
The first step in the repair of any metal roofing material will involve cleaning the surface.
You want the patch to extend past the hole at least 2 inches on each side.
Sometimes it is better to repair a metal roof than to replace it.