CERTAplank™ Reinforced Siding combines the durability and strength of vinyl with the authentic appearance of real wood siding. Lighter and easier to handle than wood, fiber cement or wood composites, it features an extra-thick panel and reinforced foam backer that provides the rigidity you'd expect from a hardboard cladding.
CERTAplank is virtually maintenance free – requiring no caulking, painting, touch-ups, or costly maintenance that drive up the installation and long-term maintenance costs of competitive products. The tight seams on this flat face, single-course, weather resistant panel give any project a finished look. CERTAplank is backed by CertainTeed’s Lifetime Limited Warranty. 
Rigid and lightweight construction allows for one-person installation
Single-course panel with 7" exposure
Wide, flat face features authentic woodgrain finish
Available in 18 low-gloss designer colors 
Fits standard 3/4" accessories
Patented STUDfinder™ enables accurate installation
Patent Pending post-formed factory lock keeps installed panels straight and secure
Rolled-over reinforced nail hem delivers excellent performance in any weather condition
Safe to cut and handle without use of a respirator (no OSHA restrictions on cutting outdoors)
Easy to transport, store and stack 

Technical Information

Whether you need to obtain product dimensions for calculating the amount of siding you need for a job or find specific code numbers to verify compliance with local building codes, you will find it here.


These instructions describe and illustrate the steps involved in installing CERTAplank, as well as additional CertainTeed siding, trim, and accessory products. Their purpose is to provide detailed information and how-to tips that will simplify the installation process. CertainTeed shall not accept any liability or responsibility under its written warranty for failure caused by application that does not meet the requirements for proper installation. CertainTeed has put together a full installation manual both in English and Spanish.

Warranty Details

You can feel confident that you have made the right decision buying from CertainTeed, a company that is an industry leader and stands behind its products with strong warranty protection. The CERTAplank Siding Lifetime Limited Warranty will provide you with specific coverage information.

Sustainability Information

CertainTeed respects the environment through the responsible development of sustainable vinyl and polymer siding products and systems.

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