S&K Roofing, Siding and Windows uses a wide range of CertainTeed products including roofing and siding. When it comes to quality and value, CertainTeed products top the list. After all, a contractor is only as good as the products he installs. We thank CertainTeed for manufacturing high quality home improvement products, and we thank them for this award. And we offer a special thanks our wonderful customers for taking the time to provide their feedback to CertainTeed, and allowing us to win this award.