More homes and businesses in the United States and Canada are protected by a GAF roof more than any other brand. For years, GAF has been an integral part of many North American homes, and it is no surprise that it has earned the coveted Good Housekeeping Seal. If you are in the market for a new roof, Vancouver’s premier roofing contractor, Crown Roofing LTD, shares how GAF has earned the Good Housekeeping Seal and why it is in your best interest as a homeowner to install a GAF roof.