Some holes may have developed in rusted spots and it is best to repair a clean surface.
Repair holes in tin roof.
You want the patch to extend past the hole at least 2 inches on each side.
Apply a coat of acrylic coating to the area around the hole or holes with a paintbrush.
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.
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.
3 cut a piece of polyester mesh slightly.
The first step in the repair of any metal roofing material will involve cleaning the surface.
Inspect the roof thoroughly to find all holes that require repair.
Sometimes it is better to repair a metal roof than to replace it.
Use a wire brush to scrape away rusted areas on your roof.
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.