The FastenMaster Cortex Hidden Fastening System delivers a flawless, fastener-free deck surface for composite, cap stock, and PVC boards. Designed for Trex Enhance Foggy Wharf, this FMCTXCL-TX1LFENFW 100 LF kit creates a rock-solid connection between deck boards and joists while keeping every line of grain perfectly uninterrupted for a premium, professional look.

What makes Cortex stand out

• Seamless finish across the entire deck: Cortex plugs are the same material as the deck boards, so the finish looks continuous from edge to edge and won’t stand out with seasonal movement.
• Hidden fasteners for a clean, modern aesthetic: Boards are secured without visible screws, preserving the deck’s visual appeal—ideal for high-end patios, walkways, and front porches.
• Pre-aligned, collated plugs for faster installs: The plugs arrive on a collated strip, reducing fumbling and speeding up the process by about half, so you finish more decks in less time.
• Expansion-contraction compatible: Cortex plugs are engineered to move with the boards, so they stay flush and don’t require replacement for the life of the project.
• PRO-focused design: TORX ttap drive system and a high-strength setting tool ensure quick, precise countersinking and consistent depth across every fastener.
• Spotter Lid Installation Guide for scalloped boards: Precisely position fasteners on Trex Enhance scalloped boards, helping you achieve consistent alignment and a professional finish.

What’s included and how it works

• 100 lineal feet of Cortex fastening capability tailored for Trex Enhance Foggy Wharf decks
• 224 Cortex screws, 2-1/2 inch, carbon steel engineered for a secure hold in deck joists
• 240 collated Cortex plugs pre-aligned for rapid, drop-in installation
• 2 Cortex setting tools to deliver the perfect countersink depth every time
• Simple installation flow: Drive the screw with the setting tool to the correct depth, place the plug over the hole with grain alignment, and tap to finish for a flawless, flush surface

Who should use this kit

Ideal for professional deck builders and serious DIYers who demand a premium, long-lasting finish. If you’re installing Trex Enhance Foggy Wharf or similar composite boards and want a nearly invisible fastening system that stays in place through seasons of movement, Cortex is your go-to solution.

Why this kit matters for your project

• Speed and efficiency: Collated plugs plus a high-speed drive system cut installation time, helping you stay on schedule and within budget.
• Long-term durability: The plugs expand and contract with surrounding boards, reducing maintenance and the risk of loose plugs or cupped boards.
• Premium appearance: A seamless, screw-free deck surface that highlights the natural beauty of Foggy Wharf boards.

Whether you’re building a new coastal retreat, a waterfront walkway, or a high-traffic outdoor living space, the FastenMaster Cortex FMCTXCL-TX1LFENFW 100 LF Collated Cortex for Foggy Wharf delivers dependable performance, professional-grade installation, and a visually flawless finish you can trust for years to come.