Have you replaced your roof in the last 10-15 years? 15 years is half the life expectancy of an older shingle. If you are already experiencing some of the issues stated below, it may be time to have a professional assess the damage. Storm damage and poor workmanship are a few reasons why these things may begin to occur. Call Sure Seal Contractors to speak with one of our experienced inspectors today and to schedule your free inspection and estimate.)