If you've been told your roof will last 25 to 30 years, whoever said that probably wasn't talking about Texas. The national averages you find online are built around moderate climates, not the combination of 100-degree summers, expansive clay soil, frequent hail, and Gulf moisture that Texans deal with every year. How long your roof lasts depends on two things: what it's made of, and how well it was installed. Here's a realistic, Texas-specific breakdown by material. How Long