Applying a roof system correctly is essential to the warranty and performance of the roof. Backed by over 100 years of excellence in the roofing industry. CertainTeed developed a complete set of installation instructions for their roofing products. These installation instructions describe and illustrate the steps involved in properly installing CertainTeed asphalt roofing products.
Click on the link to the right for the installation instructions on XT 30 shingles.