Installation Guide
Page 6
Grooved Deck Boards 
Use AZEK CONCEALoc Hidden Fasteners. 
Follow the directions on the CONCEALoc 
bucket, box or pages 8-11 of this guide.
• AZEK TopLoc color match 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 Square Shouldered Profiles in Harvest, Arbor, and Vintage Collections
  • 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 or damage to the deck plank may occur.. 
*Cortex is a registered trademark of Handy & Harman Corporation. HIDfast is a trademark of HIDfast. CAMO is a trademark of National Nail Corporation.
Square Shouldered Deck Boards
AZEK: Harvest, Arbor, & Vintage
5.5”
1”
AZEK: Grooved Decking
1”
5.5”
DECK PRODUCTS
SQUARE SHOULDERED  
LENGTHS
GROOVED  
LENGTHS
FASCIA
½" x 11¾"
All Deck Boards 1" x 5½" 12' 16' 20' 12' 16' 20' 12'
HARVEST COLLECTION  
Kona
®
HARVEST COLLECTION
Brownstone, Slate Gray
ARBOR COLLECTION
Silver Oak
®
, Hazelwood
®
, Acacia
®
,
Morado
®
,
Brazilian Walnut, 
Mountain Redwood
®
, Island Oak
™
, 
Autumn Chestnut
®
VINTAGE COLLECTION
Dark Hickory, Cypress
®
, Mahogany,
Coastline
®
, English Walnut
™
, 
Weathered Teak
™
Working with TimberTech
AZEK
®
 Deck Boards










