Installation Guide

Page 12
PRE-DRILL
DRIVE SCREWS INTO JOISTS
INSTALL PLUG
1
2
3
• Pre-drill deck board with a 7/32”
drill bit
• Using Setting Tool provided, drive
screw at medium or high speed until it
disengages at the proper level below
the deck surface.
• Drive at one continuous speed,
do not slow down.
• Install two screws into decking at
each joist
• Maximum spacing between each row of
screws should be 16” on center.
• Place plug into cored hole and
gently tap flush with deck surface
• If mushrooming occurs, stop
installation and call customer service
at 1-800-307-7780
Cortex
®
Hidden Fastening System