Spray foam roofing is thick and it’s difficult to cut through the entire membrane once it has cured. Surface damage typically won’t penetrate all the way through the spray foam and won’t create leaks. In cases of serious damage, spray foam can be repaired with additional spray foam, caulk, silicone, or other roofing materials. It’s important to remember that spray foam roofing is a thick layer of material that isn’t easily damaged by surface damage. Even when present, cuts won’t cause the failure of the roofing.