The Cortex Hidden Fastening System is the fastest, easiest way to hide the fastener heads when installing PVC trim boards. No more caulking, sanding or painting needed! Each package comes complete with screws, plugs, and setting tools in a 50, 250 or 750 lin ft box.
Available in smooth or grained finish for the following brands:
NuCedar Mills Trim
Cortex Trim is also available directly from the following board manufacturers. For ordering information and stocking dealers, please click manufacturer links shown below to visit their websites.
- Available Options
- Installation Instructions
- Technical Data
- Product Warranty Information
- Related FM Products
Install the Cortex for PVC Trim screws using an 18 volt cordless impact drill. Some suggested drills are:
Milwaukee 2650-22 1/4" Hex Impact Driver 18V
DeWalt DC822KL Heavy-Duty 1/2" (13mm) 18V Cordless Impact Wrench
Bosch Impact Driver
Trim Board Dimensions
The FastenMaster Cortex Hidden Fastening System is designed for use with PVC Trim with actual thicknesses of 5/8" to 5/4".
General Fastening Guidelines
For horizontal trim boards less than 12" wide, use two Cortex fasteners at every framing member – rafter tail or wall stud. The screws should be 16" on center or closer. If you are attaching a vertical trim board (i.e., next to a door or a window) use two Cortex fasteners every 16" on center or closer.
If trim board is 12" or wider, use three screws. Each trim board must be fastened within two inches of the end of each board.
Predrilling is not required throughout the majority of the project. Predrilling is required when fastening within 1/2" of the end of a board and at mitered joints. Use a 3/16" drill bit for predrilled pilot holes.
Setting the Cortex Fastener
Use a cordless impact driver and the Cortex setting tool. Drive the Cortex fastener to the preset level below the PVC Trim surface. The Cortex screw must be driven perpendicular to the trim surface.
Cortex Tip: To remove a Cortex screw set below the trim surface, replace the Cortex setting tool in your impact driver with a #1 square drive bit. This allows full access to the seated screw.
Setting the Cortex Engineered Plug
To ensure a strong bond, the cored hole must be free of dirt or rain water.
Using Other Screws and Plugs
The Cortex System is designed to offer ultimate long term performance. The interaction between the PVC Trim, fastener and plug is essential. The Cortex connection is fully tested and warranted. Use of non-Cortex screw or non-Cortex plug will result in nullifying the FastenMaster warranty.
This file contains installation and technical information about Cortex PVC Trim