Can I use hidden fasteners on Paramount decking?

Paramount Decking is available in both square edge and grooved deck boards. The following are approved fastening systems for Paramount Decking, a capped cellular PVC deck board.

Hidden Face Fastening and Face Fastening Installations – Square Edge Boards

Fiberon Cortex Screws are the only approved hidden face fasteners recommended for Paramount decking. Fiberon Cortex screws are available in all colors of Paramount Decking. For non-hidden face fastener installations, approved surface fastening is accomplished with a minimum #8 x 2 ½” composite deck screw with an ACQ corrosion-resistant coating or stainless steel. For all face fastening installations, install perpendicular to the deck surface, not at an angle. Position screws no closer than 1/2" from board edges or board ends, using two screws in every joist.

Hidden Fastening Installations – Grooved Boards

Fiberon recommends the Tiger Claw TC-G® hidden fastener in combination with Fiberon Cortex Fasteners as the only approved system for installing hidden fasteners in grooved Fiberon Paramount deck boards.

Tiger Claw TC-G Hidden Fasteners

The TC-G side hidden fastener installed with an impact-driver creates a tighter connection to the joist, alleviating potential sound caused by the boards moving against the joist. Maximum residential joist spacing is 16” on-center for perpendicular-to-joist applications. With all side hidden fasteners, use a minimum of one Cortex surface hidden fastener positioned in the center of each board to mitigate potential sound and to ensure the boards stay positioned during normal thermal expansion and contraction of the deck boards.

Other Considerations

  • Spacing the deck joists at 12’” on-center will increase stiffness and mitigate sound potential. Maximum residential joist spacing is 16” on-center for perpendicular-to-joist applications.
  • Self-adhesive Joist Tape: Regardless of the method of fastening, using self-adhesive joist tape will help reduce potential sound caused by boards moving against the joist, and is designed to protect the joists from premature weather-related deterioration.

See the technical bulletin for installation instructions for Paramount grooved decking.

FAQ Categories:


Sign Up for Email on the latest from Fiberon