The Roof Doctor is the leading roofer in our local area because of experience, great workmanship, and our GAF Master Elite™ contractor certification. This certification puts us in the top 3 percent of all roofing contractors in the country and allows us to install GAF’s best products and offer GAF’s best warranties to our customers. One of the things we can do for our customers is to install GAF’s Lifetime Roofing System for their home. Here are the features of this system: