Installation Guide

Page 5
Fastening Methods
TimberTech
®
Square Shouldered Boards
TimberTech recommends the use of TimberTech Cortex
or TimberTech TOPLoc for square shouldered deck board
installations. Pre-drilling is required when within 1-1/2”
of the ends of the board and for temperatures below 45
degrees Fahrenheit to avoid splitting and screw shear.
Alternate fasteners are stainless steel or high-quality
coated composite deck screws.*
TimberTech PRO, TimberTech EDGE, TwinFinish and
Reliaboard: Use Cortex, TOPLoc or a minimum #8 x 2-1/2”
stainless steel or other high-quality coated composite
deck screws.*
DockSider: Use TOPLoc Stainless Steel or a minimum #8
x 3” stainless steel or high-quality coated deck screws.*
Fastener Mushrooming:
This may occur when a non-composite deck screw is
driven into the decking. It can be greatly reduced or
eliminated by using a screw designed for composite
lumber. When installing TimberTech decking, using
TOPLoc reduces chance of mushrooming. If mushrooming
occurs, we recommend pre-dimpling the board by drilling
a hole slightly smaller in diameter than the screw head
and as deep as the screw head before driving the screen.
*TimberTech does not recommend any fastener that is not explicitly stated
in the TimberTech Decking Installation Guide. Use of any alternative
fastener does not void the TimberTech warranty; however, if a decking
failure is caused by using one of these alternative fastening methods, any
corresponding claims will be denied.
Terrain
Collection
5.360”
.94”
Reliaboard
5.360”
.94”
TwinFinish
5.360”
1”
Reserve, Legacy
and Tropical
Collections
(where available)
5.360”
.94”
Docksider
5.50”
1.25”
Fasteners should be installed perpendicular to the deck surface and driven flush; do not overdrive or splitting will
occur. Always double joists at butt seams.
Do not toe screw deck boards as this will cause splitting.
Always be sure to check and cut the factory cut ends of all
boards to ensure they are square.
EDGE Prime
and Prime+
5.360”
.94”
EDGE Premier
5.360”
.89”
TimberTech EDGE Collection
(3- Sided Cap)
TimberTech PRO Collection
(4- Sided Cap)
Any fastener driven through the edge of a TimberTech
PRO, TimberTech EDGE, Reliaboard, TwinFinish, or
Docksider board, should not be used to avoid splitting of
the board. CAMO
®
Edge Deck Fastener is an examples
of this type of fastener. The use of this type of fastener
voids any warranty provided with TimberTech Decking.
TimberTech Specialty