Cortex® for AZEK®

Confidently secure your entire deck with AZEK Cortex, a 100% hidden fastening system featuring collated plug strips and a TORX® ttap® drive system.

Compatible with TimberTech AZEK full profile boards.

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Blends in Beautifully
Fastener remains hidden because the included plug is made from TimberTech decking and color-matched to all AZEK collections.

Strong and Specialized
Deck screw is high quality, ACQ-approved, and has a TORX® ttap® drive system for a wobble-free install.

Unlike other hidden fasteners, Cortex fasteners can be used on the entire deck surface, including stairs and perimeters.

Available in:
• 100 sq. ft. – TimberTech AZEK only (350 carbon steel screws, 400 plugs)
• 300 sq. ft. – TimberTech AZEK only (1050 carbon steel screws, 1200 plugs)
• Plug replacement pack (40 collated plugs)

Questions About Installation?
We’re here to assist you with videos, guides, and more. View installation help.

The Best Warranty Coverage
TimberTech products are engineered the right way, to last. And many are covered by leading warranties. See full warranty details.

Is predrilling required when installing TimberTech AZEK decking?
Predrilling is only recommended when installing in temperatures below 40 degrees or above 80 degrees Fahrenheit, or when installing into old framing or joists.

Can I use Cortex fasteners with steel or aluminum framing?
Cortex for AZEK is not compatible with metal framing. For steel framing applications, Cortex Drillers (1-5/8″ 410 stainless steel screws) can be purchased through FastenMaster. To special order the deck plugs needed specifically for your project, please contact 1-800-518-3569.

Can TimberTech Cortex fasteners be used for all decking?
Cortex fasteners can be used on all full-profile TimberTech deck boards, except for scalloped boards from our Terrain, Prime, Prime+ and Reliaboard collections.

Additional information


American Walnut, Brownstone, Castle Gate, Coastline, Dark Hickory, English Walnut, French White Oak, Kona, Mahogany, Slate Gray, Weathered Teak

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