Installation Guide
Page 10
• Fully insert the CONCEALoc fastener into grooved edge of plank. Screw hole 
should be lined up with the center of support joist.
• Install provided screw at 45° angle through the fastener and into the joist while 
applying pressure on the fastener.
• Install one fastener and screw at each joist.
• Make sure fastener is in full contact with edge of plank and the screw is holding the 
fastener down tight to the deck board.
Incorrect
Incorrect
Correct
Correct
CONCEALoc
®
 Hidden Fasteners Installation Instructions 
CONCEALoc
® 
Hidden Fasteners Installation
2
3
POSITION CONCEALOC FASTENERS










