Installation Guide

Page 4
Fastening Methods
TimberTech Square Shouldered Planks
TimberTech recommends the use of TimberTech TopLoc
Face Fasteners for square shouldered plank installations.
Pre-drilling is required when within 1-1/2” of the ends of the
plank 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.*
Terrain, Tropical, Legacy, TwinFinish, and ReliaBoard Planks:
Use TOPLoc Face Fasteners 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 plank 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.
TimberTech Fascia and Riser Boards
Using screws with proper installation of TimberTech
Fascia provides the best long-term holding. TimberTech
recommends the use of TimberTech TOPLoc Fascia Fasteners
for best results. Refer to gapping requirements on page 3 for
proper installation.
For Use with TOPloc Fascia Fasteners:
Using the TOPLoc Fascia Bit, pre-drill 2” from the top and
bottom alternating a maximum of 12”. It is recommended
that screws are evenly spaced for the best look.
Terrain Collection
5.360”
.94”
Reliaboard
5.360”
.94”
TwinFinish
5.360”
1”
Tropical and Legacy Collections
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 planks as this will cause splitting.
• Set fascia in place being sure to follow proper gapping
requirements.
• Drive TOPLoc fascia fastener 90 degrees with the fascia
surface so that the screw head is flush with the surface.
Do not completely torque down screw; screw should
serve as a hanging mechanism to allow for expansion and
contraction in the fascia.
• Continue fastening in pattern described being sure to work
left to right or right to left. This will ensure flatness in the fascia.
• If preferred, TopLoc Fascia Fasteners may be installed 2
every 12", 2" from the top and bottom.
12"
Always be sure to check and cut the factory cut ends
of all boards to ensure they are square.