Installation Guide

Page 14
TimberTech AZEK Deck Rim Joist Covers
12’ lengths – 1/2” thick by 11.7” wide
Harvest Collection
®
· Brownstone, Slate Gray, Kona
®
Arbor Collection
®
· Acacia
®
, Morado
®
, Hazelwood
®
, Silver Oak
®
,
Mountain Redwood
®
, Brazilian Walnut, Island Oak
™
, Autumn Chestnut
®
Vintage Collection
®
· Coastline
®
, English Walnut
™
, Weathered Teak
™
, Mahogany, Dark Hickory, Cypress
®
Fastening Methods: TimberTech AZEK Rim Joist Cover
& Riser Installation Guidelines
Recommended Fasteners
• Due to the durability of TimberTech AZEK Decking products, a high-quality fastener is recommended that meets the following
specifications:
• Stainless Steel
• Minimum Screw Size: #7
• Face screws to be a minimum length of 1 3/4”
• Avoid using flathead 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.
• 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.
• Do not use Cortex fastening system.
Storage
• Store rim joist cover in a cooler, shady area prior to installation.
• Store rim joist covers on a flat solid surface.
Rim Joist Cover/Riser Attachment
• Attach rim joist cover to a solid backer wide enough to support the entire width of the rim cover. Use 2 x 12 wood rim board or rip cut
rim joist cover to fit exactly.
• Use a quality exterior rated construction adhesive as shown below.
• Install three (3) screws from top to bottom with top and bottom screws positioned no more than 1/2” from the edge as shown below.
The third screw should be approximately centered in the board. Repeat this configuration every 12”. Screws at ends of boards should
Incorrect: Missing
Solid Backer
Incorrect: Overhang
Correct
The techniques shown above should be used for best results. Results may vary as expansion and contraction could still occur. AZEK Building Products Inc. claims no liability or
responsibility for the improper installation of this product. Since all installations are unique, it is the sole responsibility of the installer to determine specific requirements in regard to
each decking application. AZEK Building Products recommends that all designs be reviewed by a licensed architect, engineer or local building official before installation. Please contact
AZEK Customer Service prior to installing if you have question or concerns.
Screws On
Rim Joist
Cover
Construction
Adhesive
12”
12”
6”
1”
1/2”
1”
1/2”
1/2”
1”
Trimming a TimberTech
®
AZEK
®
Deck