Landmark® ClimateFlex® AR (algae-resistant) technology improves upon the popular CertainTeed® Landmark brand, thanks to the latest advances in polymer science. Landmark ClimateFlex AR delivers additional impact resistance, cold-weather flexibility, and granule adhesion along with superior UV protection and durability compared to standard asphalt shingles. ClimateFlex works at a molecular level to make shingles more pliable and easier to install in cold weather than typical asphalt shingles. In addition to industry-leading hail resistance, Landmark utilizes ClimateFlex AR NailTrak®, StreakFighter®, and QuadraBond™ technologies to deliver exceptional nailing speed, algae resistance, and bond strength.