2025 UK Decking Installation Guide

PLANNING AHEAD

Trex Decking: » W hen installing any Trex decking product, especially streaked boards, it is a good idea to mix and match all of the boards on the job site prior to installation to ensure an appealing mix of light and dark tones. See inside cover for more details. » F or added protection to wood framing, use Trex ® Protect ® Joist and Beam Tape on the top of joists, rim joists, and ledger boards to help prevent rot and wood decay. Refer to trexprotect.com for more details. Trex Railing: » Trex Signature ® railings are made to be installed at maximum 1,83 m or 2,44 m CLEAR SPAN BETWEEN POSTS. » Determine post locations prior to installing any decking. In most cases, posts are usually installed before decking is installed. » For post placement on stairs, it is VERY IMPORTANT to plan your post spacing based on the length of the rail and angle of the stairs. For nominal 1.83 m and 2,44 m stair rail lengths, stair post spans (measured horizontally) will be less than 1,83 m or 2,44 m due to the angle of the stairs. » Grill/Bar-B-Q placement: A good recommendation to help prevent damage to your railing is to not have a Grill/ Bar-B-Q too close to your railing. Allow for ample airspace 45.7 - 76 cm is recommended – refer to Grill/Bar-B-Q manufacturer for additional details between the back/ sides of your Grill/Bar-B-Q to help prevent charring or staining to the railing. See individual instructions included with Trex Railing Products PRIOR to installing Trex decking. Trex Lighting: » P lan locations of lights, power supply, timer, and dimmer. These should be accessible for service if necessary. » Install wiring before decking and railing have been installed. » DO NOT run wires between joists and deck boards. See individual instructions included with Trex Lighting PRIOR to installing Trex decking or railing products. Installing Hot Tubs, Planters, and Seating: » P lan ahead proper joist spanning if required. (This is especially important if installing a hot tub.)

» F or gas, the fire pit is installed by cutting around the Trex decking. It is not to be installed on top of Trex decking. A fire-resistant material is installed under the fire pit and a protective “wall” made from stone or other fire-resistant material is installed to hold fire pit in place and also protect the decking from heat. » F or timber, fire pits are not recommended on top of Trex decking unless using a non-flammable and heat- protective barrier between the decking and the fire pit. Timber-burning fire pits can damage the decking due to extreme heat from the bottom of the fire pit and/or burning embers “shooting” onto the decking. Installing a Pergola on Trex Decking:

» Please consider the following: For assembly, a Trex pergola should be noted that all loads are not derived from the terrace construction. Plan concrete and foundations and attach the pergola with approved dowels and screws. We recommend inspection openings in the terrace for access to the screw connections at any time. Trex ® Pergola™ products are manufactured and sold by Home & Leisure, Inc., d/b/a/ Structureworks under a Trademark License Agreement with Trex Company, Inc. A 25-year Limited Warranty is provided by manufacturer.

Installing Fireplaces and/or Fire Pits With Trex Decking:

» D etermine if fire will be gas or timber burning. ( Note: Most fire pits shown in Trex images are gas burning.)

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