The answer to 'lifespan of flashing' is that the average lifespan of flashing is 15-25 years, depending on the material and installation quality. Flashing is a critical component of a roof system that helps prevent water intrusion at joints, edges, and penetrations. Proper installation and regular inspection are key to maximizing the lifespan of flashing.
Metal flashing like aluminum or galvanized steel typically lasts 15-20 years, while higher-quality stainless steel can last 20-25 years. Rubber and plastic flashing may only last 10-15 years before becoming brittle and cracking. It's important to have a professional roofer inspect your flashing periodically and make any necessary repairs or replacements to maintain the integrity of your roof.