TimberTech Cortex & PAMFast Fastening System
TimberTech Cortex is a hidden fastening system that pairs a TORX ttap screw with color-matched plugs, giving TimberTech decks a face-fastened hold without visible screw heads.
About TimberTech Cortex & PAMFast Fastening System
TimberTech Cortex hides the screw instead of hiding the fastener under the board. A TORX ttap screw goes through the face of the board, and a color-matched plug covers the hole. It can be used over the entire deck surface, including stairs and perimeters.
Packs are sized by coverage. The 100 sq ft pack has 350 screws and 400 plugs, and the 300 sq ft pack has 1,050 screws and 1,200 plugs, each available with loose or collated plugs. A 100 sq ft 316 stainless pack includes 350 screws. Collated screws for the PAMFast stand-up tool are also available. Predrill only below 40 F, above 80 F or into old framing.
Cortex is not for scalloped boards such as Terrain, Prime, Prime+ and Reliaboard, and TimberTech says Cortex for Advanced PVC is not compatible with metal framing. For steel framing, TimberTech points to Cortex Drillers (1-5/8 in. 410 stainless screws) from FastenMaster. Ask us to confirm the right Cortex pack before ordering for steel or aluminum framing. For a quote, send the board line and color, deck square footage and plug format.

Colors, sizes and specifications
Models
| Kit | Contents |
|---|---|
| Advanced PVC 100 sq ft | 350 screws with 400 loose or collated plugs |
| Advanced PVC 300 sq ft | 1,050 screws with 1,200 loose or collated plugs |
| Cortex 316 Stainless Steel Screws 100 sq ft | 350 screws |
| Cortex for Decking as Cladding 100 sq ft | 365 screws |
| Cortex Aluminum Driller 100 sq ft | 350 screws |
Features
- ACQ-approved deck screw
- TORX ttap drive for wobble-free install
- Plugs loose or collated; PAMFast tool drives collated screws while standing
Accessories and works with
- Plug replacement pack (80 collated plugs)
- 100 sq ft plug pack (400 collated plugs)
Installation notes
- Predrill only below 40F, above 80F, or into old framing
- Not for scalloped Terrain, Prime, Prime+ or Reliaboard boards; not for metal framing
Frequently asked questions
Can Cortex be used with steel or aluminum framing?
No. TimberTech says Cortex for Advanced PVC is not compatible with metal framing. For steel framing it points to Cortex Drillers from FastenMaster; ask us to confirm the right option for your framing.
One product or the whole package
Order this on its own, with a few related products, or with everything else for the project. One itemized quote, shipped to all 50 states. Need someone to install it? Find an installer serving your area.
Request a quote for TimberTech Cortex & PAMFast Fastening System
Send plans, measurements, or photos and we will prepare an itemized quote. You can also call us with questions.


