Installation Guide
Page 2
Installing TimberTech
® 
Decking
TimberTech Covers the Alternative Decking 
and Railing Market
To get information on other TimberTech products, visit 
timbertech.com or ask your dealer for these installation guides:
• TimberTech Railing & DeckLites® Installation &        
 Maintenance Guide 
These installation guidelines will direct you through the process of 
installing TimberTech products. Most installers will find this process 
similar to the installation of a wood deck. However, there may 
be areas that differ from what you are used to. These installation 
methods are recommended by TimberTech, but they may not 
cover every installation scenario you may encounter. Since each 
installation is unique in its performance requirements, the ultimate 
installation method used is the sole responsibility of the installer. 
TimberTech recommends that all designs be reviewed by a licensed 
architect, engineer or local building official before installation. 
Make sure your plans meet local building codes before you 
begin the installation. Failure to install TimberTech products 
in accordance with applicable building codes and this 
Installation Guide may lead to personal injury, affect deck 
system performance and void the product warranty.
Tools Required
TimberTech planks can be installed with a minimum number of 
readily available tools. However, many other tools are available 
that can provide even greater efficiency and ease of installation. 
All tools should be used per applicable manufacturers’ 
instructions. Some of the basic tool requirements: 
• Cordless Driver  • Carpenter Square 
• Chalk Line    • Spacing Tools
• Tape Measure  • Circular Saw 
• Jig Saw    • Safety Glasses
Use the jigsaw to cut around obstructions such as posts. A 
power miter saw can also be very helpful during installation. 
For a power miter or compound power miter saw a fine finish 
alternate top bevel blade is also recommended. When working 
with TimberTech products be sure to wear proper clothing and 
safety equipment. Safety glasses should be used during the 
entire installation process.
STOP! Read this section before you start!
For most current care and cleaning, technical information and 
more, visit www.timbertech.com.
Color and Grain Patterns 
 Our wood-plastic composite deck boards are designed to 
mimic the look of real wood, and like real wood, there will 
be a slight difference in color and grain pattern from board 
to board. This is intentional and part of the manufacturing 
process, giving TimberTech wood-plastic composite decking 
the most realistic and wood-like appearance possible. This 
variation is purely aesthetic and does not or will not affect 
the performance of the product. Our deck boards are 
designed to naturally weather over time and the surface 
pattern will weather to a consistent color. Most of the 
weathering process will be complete within the first year of 
the deck’s life.
Note 
 TimberTech is NOT intended for use as columns, support 
posts, beams, joist stringers or other primary load-bearing 
members. TimberTech must be supported by a code-
compliant substructure. While TimberTech products are 
great for deck re-planking (removing old deck surface 
planks and installing TimberTech on code-compliant 
substructure), TimberTech planks CANNOT be installed on 
top of existing deck planks.
Routing 
 TimberTech TwinFinish and DockSider may be routed 
for accents such as adding an edge radius. Earthwood 
Evolutions SHOULD NOT be routed aside from routing a 
2” wide groove in the side of solid planks for start/stop of 
CONCEALoc.
Walking Surface 
 TimberTech planks are intended to be installed embossed 
side up. The unembossed surface is not to be used as a 
walking surface. This applies to all TimberTech planks.
Directional Notch 
 TimberTech’s surface on TwinFinish, ReliaBoard, Earthwood 
Evolutions, DockSider, TwinFascia and TwinRiser boards 
are directional in manner. A notch has been added to one 
side of the planks. When installing planks, this marked edge 
must be laid to the same side for the entire installation for a 
consistent appearance. Similarly, TimberTech’s TwinFascia 
board and TwinRiser have one long beveled edge on the 
front and back. To ensure a consistent appearance from 
board to board, the beveled edge must be laid to same 
side. If you rip a piece, be sure to note the location of the 
bevel. See individual plank installation instructions. 
Static Electricity 
  The buildup or generation of static electricity is a naturally 
occurring phenomenon in many plastic based products such 
as carpeting, upholstery, and clothing, and can occur on 
alternative decking under certain environmental conditions.
Cantilevering 
 Earthwood Evolutions, TwinFinish, ReliaBoard, and 
DockSider can be cantilevered a maximum of 1”. Reliaboard 
and Earthwood Evolutions Terrain can only be cantilevered 
on the ends. 
Safety 
 TimberTech offers products that meet the American with 
Disabilities Act (ADA) guidelines for slip-resistant walking 
surfaces and unlike traditional wood, TimberTech is 
 splinter-free.










