Which shingles are better, Atlas or GAF?

Deciding which shingles are better between Atlas and GAF depends on your priorities, as GAF is larger and more widely available while Atlas offers superior algae protection technology. GAF is the largest roofing manufacturer in North America, known for Timberline HDZ which is the most installed shingle, with excellent availability at Home Depot and roofing supply houses, large StrikeZone nailing area for accurate installation, Dura Grip adhesive for 130 mph wind warranty, and strong contractor network with Master Elite and Golden Pledge warranty up to 25-year workmanship. GAF Timberline costs around 100 to 150 dollars per square. Atlas is a smaller but respected manufacturer known for Pinnacle Pristine with Scotchgard Protector algae protection using 3M copper granule technology, which is considered the best algae protection in the industry with lifetime warranty against algae streaking, compared to GAF's StainGuard Plus 25-year warranty. Atlas also offers HP42 high-performance design with larger shingles for faster installation and StormMaster Shake with Class 4 impact resistance. Atlas costs similar to GAF, sometimes slightly cheaper at 90 to 130 dollars per square. For homeowners in humid climates where algae streaking is a major concern, Atlas with Scotchgard is better. For homeowners wanting widest availability, largest contractor network, and most proven track record, GAF is better. Both are good quality with lifetime limited warranties. Most contractors rate GAF slightly higher for overall value but Atlas better for algae resistance.