The answer to 'difference between flashing repair' is that flashing repair and replacement are two distinct roofing maintenance tasks with different purposes and approaches. Flashing repair involves fixing or patching existing flashing, while flashing replacement involves completely removing and replacing the flashing.
Flashing repair is a more targeted, cost-effective solution for minor issues like cracks, holes, or loose flashing. It can often be done as a DIY project with sealants, caulk, or roof cement. Flashing replacement is a more extensive process that involves completely removing and replacing the flashing, typically around chimneys, vents, or roof edges. This is usually done by a professional roofer and is more expensive, but provides a longer-lasting solution for severely damaged or outdated flashing.