A full roof replacement means tearing off everything down to the deck — old shingles, underlayment, any damaged decking — and installing a completely new roofing system from the ground up. It's not a patch or a repair. It's a fresh start that gives your home proper protection for the next 20 to 30 years. In the Texas Hill Country, where heat and hail take a hard toll on materials, a full replacement done right is almost always the better long-term investment over repeated repairs.