The Big Takeaway
The three major shingle manufacturers are GAF, Owens Corning, and CertainTeed, each of which has its own product line with accessories for a complete roof system.
Warranties
Hail and flying debris can cause serious roof damage, but impact-resistant shingles of a certain class can bear much more of that force.
Class 4 is the highest impact rating,
Warranties make sure consumers get the full value of the product they purchased by fully or partially covering the manufacturer’s defects.
Roof packages, such as shingles with additional accessories,
Three major shingle manufacturers are GAF, Owens Corning, and CertainTeed, which offer a similar quality and scope of asphalt shingle products.
Their Timberline, Duration, and Landmark lines offer high-quality, durable
