Cortex Hidden System for Stairs, First, Last & Perimeter Boards

The Cortex Hidden Fastening System is the fastest, easiest way to hide the heads of your deck screws on market-leading deck board types. Set the screw, set the plug, and you’re all set. Cortex offers a strong connection between the deck board and the joist. The new 100 lin ft package is perfect for hiding fasteners on the first board, last board, perimeter boards or stairs.

Cortex is available for use in the following decking brands:

  • TimberTech XLM®
  • Trex

For a completely hidden fastened deck, use Cortex with our TC-G Grooved Board Clip System
All screws, plugs, and setting tools are included in every box.