We’re Certified Select ShingleMasters As a certified CertainTeed roofing contractor, Preferred Roofing has worked hard to earn the manufacturer’s exclusive Highest Level of Certification Select ShingleMaster (SSM) rating. We are very proud of working with CertainTeed line of products, with the quality homeowners have come to trust. The Best Warranty in the industry. The SureStart PLUS 5 STAR Warranty is the result of roofing products that are crafted with quality materials, advanced manufacturing methods and a standard of excellence that has no equal. Superior knowledge combined with superior products is why we can offer a 50 year warranty. more... See more text