CertainTeed gives you the Freedom of Choice in Siding materials, profiles, and colors.
CertainTeed is your best source for the finest siding products available and the best-performing fiber cement siding. For your home remodeling project, choose from the leader, CertainTeed Siding. Check out their site now and see the huge amount of quality products they have to choose from.

Alcoa - for nearly 70 years, home improvement professionals and homeowners alike have trusted Mastic® for product performance that reaches far beyond expectations.

The first company to produce vinyl siding, Mastic® has long been an established leader in innovative home exterior product design and engineering, and continues to lead the industry with advanced design features that deliver premium quality and superior performance.

Among our innovations is Duranyl®, a superior siding formulation that delivers exceptional durability. Mastic® is also the brand responsible for introducing the patented T-lok® panel locking system that is currently the industry standard. What's more, Mastic® products are backed by Alcoa -- a brand name that instantly inspires confidence with its long-held reputation of unparalleled quality and durability.