All CertainTeed fiber cement products can be easily identified by one of two means, both of which are accepted by the company when processing product warranty claims:

      1. 
Product control and identification numbers imprinted on the reverse side of the fiber cement siding will always be present and will include one of these essential initials:
        • TH (Terre Haute Plant)
        • WC (White City Plant)
        • RR (Roaring River Plant)
      2. 
Unique fingerprint of wood grain in fiber cement siding: CertainTeed WeatherBoards are imprinted with a wood grain pattern that includes a characteristic knot recognizable in photographs as well as in siding samples.
          

There are several other ways to find out if you have the Siding:

  • Check your purchase or repair documents. You may have receipts, warranties, bills of sales, or brochures from when you purchased or repaired your Siding. These documents may say that the Siding was installed on your property.
  • The contractor or company that installed or repaired your Siding may know whether or not the Siding was installed.
  • See if you still have packaging material for the Siding. The installer may have left a package of leftover Siding in your garage or basement and you may be able to identify it from the packaging.
  • Ask a contractor or builder. An experienced contractor or builder may be able to tell by looking at your property whether you may have the Siding.