For siding we use CertainTeed. CertainTeed has been in business for over 100 years. It was founded in 1904. Their slogan is "Quality made Certain, Satisfaction Guaranteed. The two combined together make CertainTeed. They are a leading North American manufacturer of vinyl and fiber cement siding; vinyl and composite decking, railing and fencing; vinyl windows; fiber glass residential, commercial and mechanical insulation; residential and commercial roofing; pipe and foundation systems.