Installation Guide

Page 10
Cortex
®
Hidden Fastening System
Suggested Drills
Corded or cordless (18V battery) drill with 1/2” chuck.
Cortex
®
Hidden Fastening System Installation Instructions
Restricted Cortex Uses
The TimberTech Cortex System is designed for traditional
elevated deck surfaces. The following applications require a
different fastening method:
• Sleeper systems: Framing rests directly on the ground or
roof deck.
•
For attaching fascia and riser boards: TimberTech TOPLoc
Fascia Fasteners should be used.
• Docks or decks with framing members in constant contact
with saltwater.
• Deck materials with a scalloped bottom such as, but not
limited to Reliaboard and Terrain Collections.
Important Information
• Pre-drilling with a 3/16” drill bit is always required when
installing Cortex in TimberTech decking.
• The Cortex Setting Tool must be used to set the Cortex screw
to the proper depth.
• The Cortex fastener must be driven perpendicular to the deck
surface for proper fit and ideal finished look.
• The cored hole must be free of debris or moisture. Use a
smooth hammer head to set the Cortex plug.
• The interaction between the deck board, screw, and plug is
essential. Use of non-Cortex Screws or non-Cortex plugs will
nullify the warranty.
End and Edge Distance Minimums
• Pre-drilling is required for installation into TimberTech decking or
mushrooming and splitting will occur.
• Pre-drilling should be done with a 3/16” drill bit to create the
proper pilot hole.
• No fasteners should be installed closer than 3/4” from the end
or edge of the plank or mushrooming and splitting will occur.
Impact Drivers are not recommended when
using TimberTech Cortex.