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TimberTech Products
TimberTech Decking Installation Guidelines

TimberTech Decking Installation Guidelines

This installation guideline will direct you through the process of installing TimberTech decking 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 ulitmate 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 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 greater efficiency and ease of installation. All tools should be used per applicable manufacturer's instructions. Some basic tool requirements:
  • Cordless Driver
  • Chalk Line
  • Tape Measure
  • Jig Saw
  • Carpenter Square
  • Spacing Tools
  • Circular 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.

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 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. If you rip a piece, be sure and note the location of the notch.
Cantilevering
Earthwood can be cantilevered a maximum of 1". Terrain can only be cantilevered on the edge.
Safety
Unlike traditional wood, TimberTech product is splinter-free.
Color and Grain Patterns
TimberTech's 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 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. TimberTech 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
Earthwood Evolutions SHOULD NOT be routed aside from routing a 2" wide groove in the side of solid planks for start/stop of CONCEALoc.

For most current care and cleaning, technical information and more, visit www.timbertech.com.

Installing TimberTech Decking

Extreme Heat Warning

Be aware of excessive heat on the surface of TimberTech products from external sources, such as but not limited to, fire or reflection of sunlight from energy-efficient window products. Low-emissivity (Low-E) glass is designed to prevent passive heat gain within a structure and can cause unusual heat build-up on exterior surfaces. This extreme elevation of surface temperatures, which exceeds that of normal exposure, can possibly cause TimberTech products to melt, sag, warp, discolor, increase expansion/contraction, and accelerate weathering.
Current or potential TimberTech customers that have concerns about possible damage by Low-E glass should contact the manufacturer of the product which contains Low-E glass for a solution to reduce or eliminate the effects of reflected sunlight.

Excessive Construction Debris

It is important during construction, the deck's surface stay clear from excessive build-up of dirt, sand, and dust from tile, concrete, landscape blocks, or any other masonry products. If these materials are not removed immediately, the deck surface will become difficult to clean and can potentially damage the deck's surface finish.
If a build-up does occur please refer to the Care and Cleaning section at TimberTech's website, www.timbertech.com.

Calculating Material Requirements

To determine how much TimberTech decking material you will need, start by calculating the square footage of your deck surface by multiplying the length by width. Once you know this number, divide by the numbers provide below for 12' planks, 16' planks and 20' planks.

Once you know the square footage number, divide it by 5.5 for 12'planks, 7.3 for 16' planks and 9.1 for 20' planks.

When calculating the amount of decking you will need, it is recommended that you add roughly 10% to the total for a scap factor.

Example: Length X Width = Total Square Footage

Square Footage ÷ by 5.5 (12'), 7.3 (16') or 9.1 (20') = Planks Needed (Round the number up)

Expansion and Contraction

TimberTech Deck Planks will experience expansion and contraction with changes in temperature. Expansion and contraction are most significant where extreme temperature changes occur. Fastening the deck planks according to the gapping requirements in the following table accomodates for this movement.

Changes in length are most significant during the installation process, and should be accounted for if working in extreme temperatures. A good example would be cutting your planks during a hot afternoon, letting them sit outside overnight in the cool air and then installing them the next morning. Chances are, you'll notice a certain amount of contraction. The best way to minimize this problem is to fasten your planks as soon after cutting as possible.

Gapping requirements for All TimberTech Planks

  • Side-to-side plank gapping must be minimum 1/8" to maximum 3/16".
  • Allow 3/16" mimimum gap where the planking meets any adjoining structure or post.
  • Follow these butt joint gapping guidelines for all TimberTech planks:

Butt Joint Gapping Requirements
32° F and below
33° F to 74° F
75° F and above
3/16" gap
1/8" gap
1/32" gap

Decking Installation Page 2

Decking Installation Page 3

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