The answer to 'when to replace flashing' is that flashing should be inspected and replaced as needed, typically every 10-15 years or when it shows signs of wear and damage. Flashing is the thin metal or plastic material installed around roof penetrations, edges, and transitions to prevent leaks. Over time, flashing can deteriorate due to weather exposure, leading to cracks, rust, or separation from the roof. Replacing worn flashing is crucial to maintaining a watertight roof and preventing water damage to your home.
Regularly inspecting your roof's flashing and replacing it when necessary is an important part of roof maintenance. Signs that flashing needs to be replaced include cracked, curled, or missing caulk, visible rust or corrosion, and gaps or separations between the flashing and roof. Replacing flashing is best done by a professional roofing contractor to ensure a proper, long-lasting installation.