This shingle has a tough fiber glass reinforced base to help achieve the highest impact resistant rating from U.L. Tested to withstand the impact of a 2" steel ball being dropped from 20 feet in the air. With soft shadow lines, a random tab design and a patented color blending process, Landmark IR gives your roof the classic shades and dimensional appearance of natural roofing materials.
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 in both English and Spanish. These installation instructions describe and illustrate the steps involved in installing CertainTeed asphalt roofing products.