The Cortex for Fascia Hidden Fastening System is the fastest, easiest way to hide the heads of your screws when installing fascia or stair risers.
Cortex for Fascia
Hidden Fastening System
For Trex® Fascia Boards
Perfect Match, Clean Finish
Cortex plugs are made from the same material as Trex® Fascia boards, creating a 100% perfect match every time.
TORX ttap Drive System
TORX® ttap® provides superior bit engagement for a stable, wobble-free installation experience.
Engineered for Fascia
Designed to support the expansion and contraction of fascia boards over time.

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Beach DuneBeach Dune
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BiscayneBiscayne
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CarmelCarmel
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Clam ShellClam Shell
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Coastal BluffCoastal Bluff
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Foggy WharfFoggy Wharf
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Gravel PathGravel Path
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Havana GoldHavana Gold
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Island MistIsland Mist
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JasperJasper
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Lava RockLava Rock
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MadeiraMadeira
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PebblePebble
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RainerRainer
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Rocky HarborRocky Harbor
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Rope SwingRope Swing
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SaddleSaddle
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SaddleSaddle
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Spiced RumSpiced Rum
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Tiki TorchTiki Torch
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Toasted SandToasted Sand
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Tree HouseTree House
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Vintage LanternVintage Lantern
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Winchester GreyWinchester Grey
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Woodland BrownWoodland Brown
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Universal WhiteUniversal White
PERFECT COLOR MATCH
Since Cortex Plugs are made from the exact same material as the composite boards, the color and texture is matched perfectly every time.
Compatible with fascia boards manufactured by Trex.
Part Numbers
Board | SKU |
Beach Dune | FMCTXF-TX50ENBD |
Biscayne | FMCTXF-TX50TSBC |
Carmel | FMCTXF-TCX50TSCM |
Clam Shell | FMCTXF-TX50ENCS |
Coastal Bluff | FMCTXF-TX50ENCB |
Fire Pit | FMCTXF-TX50TSFP |
Foggy Wharf | FMCTXF-TX50ENFW |
Gravel Path | FMCTXF-TX50TSGP |
Havana Gold | FMCTXF-TX50TSHG |
Island Mist | FMCTXF-TX50TSLM |
Jasper | FMCTXF-TX50TSJP |
Lava Rock | FMCTXF-TX50TSLR |
Madeira | FMCTXF-TX50SLMD |
Pebble | FMCTXF-TX50SLPB |
Rainier | FMCTXF-TX50TSRN |
Rocky Harbor | FMCTXF-TX50ENRH |
Rope Swing | FMCTXF-TX50TSRS |
Saddle | FMCTXF-TX50SLSD |
Saddle | FMCTXF-TX50ENSD |
Spiced Rum | FMCTXF-TX50TSSR |
Tiki Torch | FMCTXF-TX50TSTT |
Toasted Sand | FMCTXF-TX50ENTS |
Tree House | FMCTXF-TX50TSTH |
Universal White | FMCTXF-TX50TSUW |
Vintage Lantern | FMCTXF-TX50TSVL |
Winchester Grey | FMCTXF-TX50SLWG |
Woodland Brown | FMCTXF-TX50SLWB |