Asphalt shingle roofs are the most popular type of roof in North America. If you have decided that you would like to replace your current roof with a shingle roof, then the next step is to pick out the brand of shingles you would like. Here at Roof MD, we can install any type of shingle product, but we often recommend GAF shingles. More than 90 million Americans have a GAF roof, with good reason. GAF shingles are known to adhere to the highest standards of quality and to withstand the elements well. For more than a century, the GAF name has been synonymous with high-performance, award-winning residential and commercial roofing products.