GAF Celebrating 130 yrs in business. Quality You Can Trust From North America's Largest Roofing Manufacture. Inventors of the Timberline Advanced Protection Shingle - the #1 selling shingle in North America. Rated #1 in shingle quality in the 2014 BUILDER magazine Brand Use Study. Named #1 in innovation for shingles by Home Builder Executive magazine in 2012 & 2013. Only shingle manufacture backed by the Good Housekeeping Seal. Products aren't awarded the Good Housekeeping Seal - they earn it. That's why it's reassuring to see the Seal, because you know the product has been thoroughly evaluated by the scientists, engineers, and technicians at the Good Housekeeping Research institute (GHRI). GAF is a proud recipient of the Women Certified Women's Choice Award for 4 consecutive years - 2012 - 2015. If your looking for a new roof, rest assured you've come to the right place. Not only do most GAF shingles offer a Lifetime Ltd warranty for peace of mind, but GAF's vast shingle offering means you're virtually certain to find the right combination of style, color, and price to suit your taste.