United States / Build / “ReliaBoard™” HDPE composite deck board, square edge, scalloped back surface
“ReliaBoard™” HDPE composite deck board, square edge, scalloped back surface — type figure.
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“ReliaBoard™” HDPE composite deck board, square edge, scalloped back surface
This is a listed decking assembly. Listing 8110-2051:0003. This site cites SFM 12-7A-4. Match the model and orientation.
Enter your ZIP to see which local requirement this meets.
TimberTech ReliaBoard square-edge decking has a California wildfire-area listing for the specified scalloped composite board.
The scalloped back means the board has two stated thicknesses: 3/4 inch at its thinnest portion and 15/16 inch at its thickest. Width is 5-3/8 inches, and nominal weight is 2.4 pounds per linear foot. These dimensions belong to the HDPE composite ReliaBoard described by listing 8110-2051:0003.
OSFM's September 2025 WUI handbook identifies SFM 12-7A-4A as the protocol and Class B flame spread as the result, under decking category 8110. Keep Class B attached to this model when comparing decking documents. Match the square edge and scalloped profile to the boards being ordered, check the live government listing, and follow TimberTech's product data and installation instructions for the deck surface.
Documents for this product
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