Installation Guide
Page 5
XLM Collection Grooved Deck Boards
Use AZEK CONCEALoc Hidden Fasteners. Follow the
directions on the CONCEALoc bucket, box or page 6
of this guide.
Fasteners
• Due to the durability of AZEK deck products, a high-quality fastener is recommended that meets the
following specications:
• Stainless Steel
• Minimum Screw Size: #7
• Face screws to be a minimum length of 2 1/4”
• Be sure that screws are driven to a minimum depth of 1 1/4” into solid wood framing below the
bottom of the AZEK Deck Board. This will enhance holding power and uplift resistance.
• Avoid using athead screws. Trim head screws typically provide a better result. As always, you should
try the fastener in a sample board before using on your deck.
• Be sure to install 2 screws per joist on each deck board.
• For salt water coastal applications, we suggest using the above minimum fastener requirements in 316
stainless steel.
• Color-matched stainless steel deck screws are also available. Your AZEK Building Products dealer can
assist with more information on these products.
• AZEK does not recommend any fastener that is not explicitly stated in the AZEK Decking and
Installation Guide. Use of any alternative fastener does not void the AZEK warranty; however, if a
decking failure is caused by using one of these alternative fastening methods, any corresponding
claims will be denied.
• Many of these fasteners have either not been tested, or directly affect the performance of AZEK
products. As such, AZEK is not comfortable recommending them.
• Hidden Fasteners: for Arbor, Harvest and Terra Collections.
• Tiger Claw® TC-P, Fastenmaster’s Cortex®, HIDfast™, and CAMO™ fasteners are some hidden
fastener systems commonly used by contractors installing AZEK Deck. Before using other
types of hidden fasteners, check with the manufacturer of the fastener and/or AZEK customer
service to ensure compatibility.
• WARNING: When installing AZEK Deck with hidden fasteners, always use a beater board against side
of deck board. Do not strike deck board directly with hammer or rubber mallet.
*Tiger Claw is a registered trademark of Tiger Claw Incorporated. Cortex is a registered trademark of Handy & Harman Corporation. HIDfast is a
trademark of HIDfast. CAMO is a trademark of National Nail Corporation.
Solid Deck Boards
AZEK: Arbor, Harvest, &
Terra
AZEK: XLM Square Shouldered
AZEK: XLM Grooved
5.50”
1”
1”
5.50”
1”
5.50”
Working with AZEK Deck Boards