The FastenMaster Cortex for Boral Trim – 50 Linear Feet is a fast and easy way to conceal fasteners and screw heads when installing PVC trim Boards. Cortex is easy-to-use and includes everything needed, including (75) screws, (100) plugs, and a setting tool. FastenMaster recommends installing with an 18 volt cordless impact drill. The Cortex for Trim Fastening System is designed for use with PVC Trim with an actual thickness of 5/8″ to 5/4″.
How many fasteners are needed? 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″ OC or closer. Vertical trim boards (i.e., next to a door or a window), use two Cortex fasteners every 16″ OC or closer. If a trim board is 12″ or wider, use three screws. Each trim board must be fastened within two inches of the end of each board. Note: 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.




















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