2025 UK Decking Installation Guide

2025 UK DECKING INSTALLATION GUIDE

QUICK REFERENCE GUIDE Mix and Match Colours/Colour Variation

INSTALLATION TIPS

Capturing that exotic beauty when installing a Trex Transcend ® deck in tropical colo u rs is as easy as mixing and matching.

W hen installing any Trex decking product, especially Trex Transcend Tropicals, it is a good idea to mix and match all the boards on the job site prior to installation to ensure an appealing mix of light and dark tones. Installation Temperatures Please be sure to follow the temperature suggestions at installation to allow for the expansion and contraction of Trex WPC boards. Cutting Ends of Boards It's required that ends of Trex decking boards be cut to ensure a good square cut prior to installation. Refer to page 15 for additional information. Spanning Requirements Trex decking requires different joist spanning requirements based on load applications or deck orientation. Refer to page 10 for additional information. Gapping Requirements Trex decking requires product to be gapped at installation to ensure proper spacing for expansion and contraction. Refer to pages 14-18 for additional information. Special Requirements When Using Trex Hideaway ® at Abutted Deck Boards When using the Trex Universal Hidden Fasteners or Trex Elevations ® Hidden Fasteners where the ends of two deck boards meet (abutted ends), it is critical to use these fasteners in the proper way. Refer to page 20 for additional information. NEED HELP? Trex provides a variety of valuable resources to answer your questions or concerns such as locating warranty information. For additional assistance, check out:

To start your deck design, mix and match all tropical boards on the jobsite.

Start lining them up, putting dark against light, as a practice run to help visualize the final look. You’ll see that the variety of colo u r board by board develops its own rich, random pattern full of lights and darks.

Continue mixing and matching boards to ensure an appealing mix of light and dark tones across the entire deck.

This

symbol indicates text continues to next page.

For complete installation instructions, visit trex.com

TDLTTRST0312

Arbor Forest Products Ltd. 01469 532300

JOB SITE STORAGE

MOISTURE PROTECTION ALWAYS cover decking products, even on construction site, until ready to be installed to prevent moisture. Tannins (brown spotting) can be washed off boards if this occurs.

TREX AND STATIC ELECTRICITY While this is not common, static electricity can occur on walking surfaces in dry climates or in areas where dry winds and dust-borne particles lay on the decking surfaces. Static electricity can build up on occupants walking across any composite decking surface, including Trex, then produce a small static shock if they touch a grounded metal surface such as a railing, door, etc. This condition can be decreased greatly with the use of a product call ACL Staticide ® . Two products tested were General Purpose Staticide ® and Heavy Duty Staticide ® . Both are effective at greatly reducing static electricity on Trex decking surfaces. Apply full strength, using a mop on a dry decking surface, and allow to dry. No rinsing, no diluting needed. Products are non-toxic, non-flammable, non-staining (will not change the color of decking surface), completely biodegradable and safe to use. Product is water based and may require a second application after rain or other weather conditions. Over a period of time, the effect of static will dissipate naturally on the decking surface. See link for more information on product: http:// www.aclstaticide.com/antistatic_coatings.html TEMPERATURES AT INSTALLATION If boards have been stored in a cold environment, or if installing in localities prone to large temperature shifts within a 24-hour period, its best to lay boards out on framing (DO NOT ATTACH OR CUT) to allow boards to acclimate to current temperatures BEFORE installation.

STORAGE REQUIREMENTS: Store decking on a flat level surface and ALWAYS use proper supports. DO NOT store directly on the ground. When stacking Transcend decking bundles, supports should start approximately 254 mm from each end (Enhance decking should start approximately 457 mm from each end) and be spaced approximately 0.61 m on center. In addition, supports should line up vertically/perpendicular to the decking product. Adjust supports accordingly if bundles are loose. (IMPORTANT TO NOTE THAT PROPER SUPPORT SPACING MUST BE IN PLACE FOR THESE HEIGHTS). When stacking multiple bundles, ensure that supports line up vertically down through each stack.

*Enhance decking, and 14 mm x 184 mm and 14 mm x 288 mm products: maximum stack height is 12 bundles. Transcend decking: maximum stack height is 14 bundles.

SAFETY

TOOLS NEEDED

Mitre saw blade

Standard power drill

Long sleeves

Trex groove router bit

Safety glasses

Carbide-tipped blades (recommended with 40 teeth or more)

Gloves

Dust mask

Trex groove cutter

NOTE: » Always refer to local safety code requirements prior to installation of any decking products.

NOTE: Construction methods are always improving. Please refer to www.trex.com (and your country) for the most up-to-date installation requirements.

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.)

TREX TRANSCEND® AND TREX ENHANCE® DECKING CARE AND CLEANING GUIDE All exterior building materials require cleaning. Generally, soap and water is all that is required to clean Transcend and Enhance decking products. For additional information, see table below.

PROBLEM

SOLUTION

The affected area should be sprayed off with a hose to remove surface debris. Use warm soapy water and a soft bristle brush to remove dirt and debris from the embossing pattern.

Dirt and Debris

A pressure washer with no greater than 214 Bar** that has a fan attachment/adjustment and soap dispenser may be used to remove dirt, concrete dust, or other types of construction dirt. Spray deck with soap, then follow by gently scrubbing each deck board with a soft bristle brush. Spray/rinse each individual deck board using a fan tip no closer than 203 mm from the decking surface. RINSE THOROUGHLY. If dirty water from cleaning is left to dry, a film will remain on the decking surface. When working with cement, concrete, mortar, or stucco, protect the decking as much as possible in order to not get dust particles on the decking surface. These particles, once they get hot or wet, can cause a reaction on the decking surface and are very difficult to remove. If particles get on the decking surface, Trex recommends using Sakrete™ Concrete Dissolver (www.sakrete.com/products/ concrete-dissolver) . BE SURE TO FOLLOW MANUFACTURER'S INSTRUCTIONS. Hard water is water with high amounts of mineral deposits like lime, silica and calcium. When the water dries, deposits are left behind, leaving unsightly spots on surfaces. This is not a defect of Trex products but an issue with the water itself. Generally, these deposits can be cleaned with white vinegar on decking surfaces. Rinsing is required, so care should be taken to not use hard water for this purpose. If hard water must be used, dry with a cloth or use a blower to dry surfaces. In some cases a deck brightener product may also be used to help clean hard water stains.

Using a Pressure Washer (General Cleaning Issues)

Issues with Concrete, Cement, Mortar, or Stucco Dust

Hard Water Staining

Most colored chalks are permanent and may discolor the surface. Use only Irwin Strait-Line ® Dust-Off Marking Chalk (purple), DeWalt ® Blue Chalk, or DeWalt ® Orange High Visibility Chalk.

Chalk Lines

Remove all debris from the deck using a hose or broom. Once the deck surface is dry, apply a deck “brightener"* to the deck as directed by the manufacturer. Deck Brighteners contain oxalic acid, which will also remove tannins.

Tannins Due to Debris

A plastic shovel may be used to remove snow from the deck. Use calcium chloride or rock salt to melt the snow and ice from the deck surface.

Ice and Snow

All food spills should be removed as soon as possible. The surface must be cleaned within seven days to maintain the stain warranty. To remove, spray off with a hose and use warm, soapy water and a soft bristle brush to remove spills from the embossing pattern.

Oil, Grease, and Food

If debris such as pollen and dirt is allowed to remain on the deck surface, mold can feed on the biofilm. Using a hose and warm, soapy water with a soft bristle brush is recommended to remove the food source and mold.

Mold and Mildew

NOTE: Construction methods are always improving. Please refer to www.trex.com (and your country) for the most up-to-date installation requirements.

TREX TRANSCEND® AND TREX ENHANCE® DECKING CARE AND CLEANING GUIDE

PROBLEM

SOLUTION

While this is not common, static electricity can occur on walking surfaces in dry climates or in areas where dry winds and dust-borne particles lay on the decking surfaces. Static electricity can build up on occupants walking across any composite decking surface, including Trex, then produce a small static shock if they touch a grounded metal surface such as railing, door, etc. This condition can be decreased greatly with the use of a product call ACL Staticide®. Two products tested were General Purpose Staticide® and Heavy Duty Staticide®. Both are effective in greatly reducing static electricity on Trex decking surfaces. Apply full strength using a mop on a dry decking surface, and allow to dry; no rinsing or diluting needed. Products are non-toxic, non-flammable, non-staining (will not change the color of decking surface), completely biodegradable and safe to use. Product is water-based and may require a second application after rain or other weather conditions. Over a period of time, the effect of static will dissipate naturally on the decking surface.

Trex and Static Electricity

See link for more information on product: http://www.aclstaticide.com/antistatic_coatings.html

Use caution when using rubber-backed mats (i.e. welcome mats, etc.) as these may contain substances that can sometimes discolor or lighten the decking surface.

Rubber Mats

Store decking on a flat level surface and ALWAYS use proper supports (dunnage). DO NOT store directly on the ground. When stacking Transcend decking as well as all fascia products/bundles, supports (dunnage) should start approximately 254 mm from each end. (Enhance decking should start approximately 457 mm from each end) and be spaced approximately 0.61 m on center. In addition, supports (dunnage) should line up vertically/perpendicular to the decking product. Adjust support blocks (dunnage) accordingly if bundles are loose. For Enhance decking, and 1x12 and 1x8 products, the maximum stack height is 12 bundles. For all other decking products maximum stack height is 14 bundles (IMPORTANT TO NOTE THAT PROPER DUNNAGE SPACING MUST BE IN PLACE FOR THESE HEIGHTS). When stacking multiple bundles, ensure that dunnage lines up vertically down through each stack. ALWAYS cover decking products on site until ready to be installed.

Material Handling / Storage

Strait-Line® is a registered trademark of Irwin Industrial Tool Company. Sakrete™ is a trademark of Oldcastle APG, a CRH Company. ACL Staticide® is a registered trademark of ACL Incorporated. *Use of products containing bleach or acid can lighten the lighten the surface of Trex. Use in an inconspicuous area to determine whether you like the effect. Neither product will affect the structural integrity of Trex. **Use of a pressure washer greater than 214 Bar could damage the boards and void the warranty.

TREX DECKING, FASCIA, AND FASTENING SYSTEMS NOTE: Check with local distributor for product availability in your area.

25 mm Square-Edge Board Actual Dimensions: 25 mm x 140 mm x 365 cm / 487 cm / 609 cm

25 mm Grooved-Edge Board Actual Dimensions: 25 mm x 140 mm x 365 cm / 487 cm / 609 cm

14 x 184 mm Fascia Actual Dimensions: 14 mm x 184 mm x 365 cm

14 x 288 mm Fascia Actual Dimensions: 14 mm x 288 mm x 365 cm

33 mm Square-Edge Board Actual Dimensions: 33 mm x 86 mm x 4 87 cm 33 mm x 140 mm x 365 cm / 4 87 cm / 609 cm

TREX FASTENERS

COMPONENT

75 CT. ITEM # 350 CT. ITEM # 1400 CT. ITEM # COLORS

COMPONENT

ITEM #

COLORS

TCM25BC75 TCM25BD75 TCM25CL75 TCM25CS75 TCM25FW75 TCM25HY75 TCM25IM75 TCM25LR75 TCM25PG75 TCM25RH75 TCM25SD75 TCM25SR75 TCM25TP75 TCM25TS75 TCM25TT75

TCM25BC350 TCM25BD350 TCM25CL350 TCM25CS350 TCM25FW350 TCM25HY350 TCM25IM350 TCM25LR350 TCM25PG350 TCM25RH350 TCM25SD350 TCM25SR350 TCM25TP350 TCM25TS350 TCM25TT350

TCM25BC1400 TCM25BD1400 TCM25CL1400 TCM25CS1400 TCM25FW1400 TCM25HY1400 TCM25IM1400 TCM25LR1400 TCM25PG1400 TCM25RH1400 TCM25SD1400 TCM25SR1400 TCM25TP1400 TCM25TS1400 TCM25TT1400

BC BD CL CS FW HY IM LR PG RH SD SR TP TS TT

TCMF175BC75 TCMF175BD75 TCMF175CL75 TCMF175CS75 TCMF175FW75 TCMF175HT75 TCMF175HY75 TCMF175IM75 TCMF175LR75 TCMF175PG75 TCMF175RH75 TCMF175SD75 TCMF175SF75 TCMF175SR75 TCMF175TP75 TCMF175TS75 TCMF175TT75 TCMF175WW75 TP Tide Pool TS Toasted Sand/ Havana Gold

BC BD CL CS FW HT HY IM LR PG RH SD

Trex Color-Match Deck Screws » # 10 x 2.5" (6.35 cm) » 7 5 ct. box,

Trex Color-Match Fascia Screws » 1-3/4" (4.4 cm)

» 75 ct. box » Tools sold separately

350 ct. box, 1,400 ct. tub

» H exStix®

bits included

SF SR TP TS TT WW

CB Coastal Bluff CL Rope Swing/ Carmel

XX = COLOR PREFIX

BC Biscayne BD Beach Dune/ Jasper

CS Clam Shell FW Foggy Wharf/ Rainier

HT Hatteras HY Honey Grove IM Island MIst

LR Lava Rock PG Pebble Grey/ Whidbey

RH Rocky Harbor SD Saddle/ Ocracoke/ Hatteras

SF Salt Flat SR Spiced Rum/

TT Tiki Torch WW Woodgrain White

Cinnamon Cove

COMPONENT

ITEM #

COMPONENT

ITEM #

COMPONENT

ITEM #

Trex Decking Plug Screws

Trex Enhance ® Decking Plug Screws » 2 " (5.0 cm) » 7 5 ct. box, 400 ct. tub, black » Tools sold separately

Trex Plug System Fascia Screws » 1-3/4" (4.4 cm) » 7 5 ct. box, black » Tools sold separately

TDPS25BK75 TDPS25BK350

TENDPLGS2BK75 TENDPLGS2BK400

TPSF175BK75

» #10 x 2.5" (6.35 cm) » 75 ct. box, 350 ct. tub » Includes depth setters, black

416 CT. ITEM #

COLORS

COMPONENT

80 CT. ITEM #

COLORS

TPSDFCS80 TPSDFFW80 TPSDFRH80 TPSDFSDEN80 TPSDFTS80

TPSDFHY80 TPSDFTP80 TPSDFBD80 TPSDFCC80 TPSDFCB80

CS FW RH SDEN TS

HY TP BD CC CB

TPSDFCS416 TPSDFFW416 TPSDFRH416 TPSDFSDEN416 TPSDFTS416

TPSDFHY416 TPSDFTP416 TPSDFBD416 TPSDFCC416 TPSDFCB416

CS FW RH SDEN TS

HY TP BD CC CB

Trex Enhance ® Decking/Fascia Plugs » 8 0 ct., 416 ct.

COMPONENT

80 CT. ITEM # COLORS 400 CT. ITEM # COLORS

COMPONENT

80 CT. ITEM # COLORS

TDPLGBC80 TDPLGCL80 TDPLGHG80 TDPLGHT80 TDPLGIM80 TDPLGIML80 TDPLGJA80 TDPLGLR80 TDPLGPG80 TDPLGRN80 TDPLGRS80 TDPLGSD80 TDPLGSF80 TDPLGSR80 TDPLGTT80

BC CL HG HT IM IML JA LR PG RN RS SD SF SR TT

TDPLGBC400 TDPLGCL400 TDPLGHG400 TDPLGHT400 TDPLGIM400 TDPLGIML400 TDPLGJA400 TDPLGLR400 TDPLGPG400 TDPLGRN400 TDPLGRS400 TDPLGSD400 TDPLGSF400 TDPLGSR400 TDPLGTT400

BC CL HG HT IM IML JA LR PG RN RS SD SF SR TT

TPSFBC80 TPSFCL80 TPSFHG80 TPSFHT80 TPSFIM80 TPSFIML80 TPSFJA80 TPSFLR80 TPSFPG80 TPSFRN80 TPSFRS80 TPSFSDSL80 TPSFSF80 TPSFSR80 TPSFTT80 TPSFWW80

BC CL HG HT IM IML

Trex Decking Plugs » 8 0 ct., 400 ct.

Trex Fascia Plugs » 80 ct.

JA LR

PG RN RS SDSL

SF SR TT WW

XX = COLOR PREFIX

BC Biscayne CL Carmel

HG Havana Gold HT Hatteras

IM Island Mist IML Island Mist Lineage

JA Jasper LR Lava Rock

PG Pebble Grey RN Rainier

RS Rope Swing SD Saddle

SDSL Saddle Select SF Salt Flat

SR Spiced Rum TT Tiki Torch

WW Woodgrain White

DECKING TOOLS

DECKING/FASCIA SYSTEM TOOLS

UNIVERSAL FASTENERS & ACCESSORIES

COMPONENT

ITEM #

COMPONENT

ITEM #

COMPONENT

Softwood Substructure UNIVCONCLIP (50 sq ft. / 4.6 m 2 box) DA00002 (50 sq. ft. / 46 m 2 bucket) Hardwood Substructure HWOODCONCLIP50 (50 sq. ft. / 4.6 m 2 box)

Steel Substructure ELVUNIVCLIP (50 sq ft. / 4.6 m 2 box) ELVUNIVCLIPPAIL (50 sq. ft. / 46 m 2 bucket)

Universal Fastener

HexStix Bit » 2-pk » THB2PK

Trex Color-Match Fascia Counterbore Tool Kit » w/ Drive Bits Trex Plug System Fascia Counterbore Tool Kit » w/ Depth Setters Trex Plug System Enhance Decking Tool Kit » w/ Depth Setters

TCMFCBKIT

Aluminum Substructure

EUROCONCLIP50 (50 sq ft. / 4.6 m 2 box)

TPSFCBKIT

Decking Depth Setter » 1-pk » TDDS1PK

COMPONENT

ITEM #

UNIVSTARTCLIP (37 m 2 bag)

Universal Starter Clip

TPSWENDCBKIT

Groove Router Bit

ROUTBIT

SPANNING REQUIREMENTS Joist Spanning for Decking

Wood or metal framing members must be spaced on center according to the chart below. Be sure that framing members are level and plumb. Trex decking must span at least three framing members. For heavy items such as hot tubs, planters, etc., consult a local building engineer or inspector for span recommendations. JOIST SPACING SPAN CHART (Center-to-Center) Residential Decks, Light Duty Docks, Residential/Day Care Playground Commercial Decks, Boardwalks and Marinas Decking Loading 4788 N/m 2 4788 N/m 2 9576 N/m 2 25 mm x 140 mm Boards 400 mm 400 mm 300 mm 33 mm x 140 mm Boards 600 mm 600 mm 400 mm

ADJUST JOIST SPANNING TO ACCOMMODATE ANGLED DECKING PATTERNS

30°

60°

90°

45°

30°

45°

90°

60°

RES = 200 mm COM = 150 mm

RES = 350 mm COM = 250 mm

RES = 300 mm COM = 200 mm

RES = 400 mm COM = 300 mm

TREX BRANDED RECOMMENDED FASTENERS If any condition occurs which is attributable to the use of non-recommended or non-approved, such condition shall not be covered under the Trex Limited Warranty. Transcend ® Enhance ® DECKING–HIDDEN FASTENERS Trex Hideaway ® Hidden Fastener See page 9 for approved fastener types based on sub-structure used X X Trex Hideaway ® Deck Plug* *Ensure to use correct Trex Hideaway plug system for designated Trex Decking Profile X X

DECKING–COMPOSITE SCREWS

Trex Hideaway ® Color Match Decking Composite Screw

TREX PRODUCT LINES

Transcend ®

Enhance ®

FASCIA

Trex Hideaway ® Fascia Plug* *Ensure to use correct Trex Hideaway plug system for designated Trex Fascia Profile

Trex Hideaway ® Color Match Fascia Composite Screw

OTHER APPROVED FASTENERS If any condition occurs which is attributable to the use of non-recommended or non-approved or non-approved, such condition shall not be covered under the Trex Limited Warranty. Transcend ® Enhance ® DECKING Cortex ® Concealed Fasteners X FastenMaster ® TrapEase 3 Ultimate Composite Deck Screw X X FASCIA Starborn ® Deckfast ® Fascia System – Epoxy Coated* and Headcote ® Stainless X X SplitStop ™ Fascia Screws X X

Fascia system screws listed above can only be used with composite fascia profiles , and cannot be used with standard thickness decking boards used as fascia. Use stainless steel screws near water applications.

FastenMaster ® , TrapEase ® 3, and Cortex ® are registered trademarks of OMG, Inc. DeckFast ® Fascia System screws are registered trademarks of Starborn Industries Inc. SplitStop™ fascia screws are a registered trademark of Titan Metal Werks, Inc. Trex recommends the use of two screws per joist. All recommended screws are designed to be installed flush with decking surface; DO NOT countersink screws. Use recommended stainless steel screws in any areas near bodies of saltwater.

OTHER APPROVED FASTENERS/ CONTINUED

COMPATIBLE FASTENER MATERIALS FOR USE WITH TREX

Stainless Steel: 410 Series or 1.4003/ 1.4006

Stainless Steel: 300 Series or 1.4301/1.4401/1.4567

Carbon Steel w/ 1000 hr. Corrosion- Resistant Coating

Substrate Material

Exterior Grade Natural or Treated Timber

Yes***

Yes

Yes**

Plastic or Fiberglass Composites

Yes

Aluminum

Yes

Steel

Yes*

Yes #

*Trex Elevations Universal Hidden Fastener are approved **Trex Universal Hidden Fasteners are approved

# Trex Universal Hidden Fasteners for Aluminum Framing are approved ***See Trex recommended fasteners for listing of approved decking screws This guide is for recommended use of fasteners for use with Trex decking. Not all sub-structure materials fall under these categories. In the case of any unique substrate composition of materials, or proprietary composites, consult the substrate manufacturer for recommendations of applicable fasteners.

*For 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.

>3 mm

Trex ® Protect™ *

60 mm

40 mm

Rubber Pad

40 mm

Aluminium or Steel Framing

Hardwood

TIP: Friction tape (a) or screws (b) reduce the sliding of the decking boards when using Trex Universal Fasteners.

Pedestal

Grade to allow for drainage

IMPORTANT: ALL FRAMING MUST BE ATTACHED TO SUBSTRUCTURE USING PROPER FASTENERS. IN THE CASE OF ROOFTOP

APPLICATIONS. SEE FOLLOWING PAGES FOR THESE APPLICATIONS.

NOTES: » All dimensions listed below are in millimeters (mm). » Loose stones and slabs are not suitable as a base for framing substructure. » *Tre x ® Protect™ Joist and Beam Tape can be applied to protect timber framing. See www.trexprotect.com for more details.

NOTE: Construction methods are always improving. Please refer to www.trex.com (and your country) for the most up-to-date installation requirements.

Example 1

Example 2

Concrete Slabs 1000 x 250 x 50mm

Example 3

Example 4

* Reinforcement or counter spacing depends on the supplier and the aluminum dimensions.

**Existing sealing web, e.g. rooftop terraces. Do not screw through!

Gapping and Overhang Requirements

You must gap Trex decking both end-to-end and width-to-width. Gapping is necessary for drainage and the slight thermal expansion and contraction of Trex decking boards. Gapping also allows for shrinkage of the timber joist system. » ALWAYS follow Trex-recommended gapping guidelines. » Maximum allowable perpendicular overhang for all Trex decking is 13 mm. » All decks require air circulation to keep them dry and looking good. To improve air flow, leave .openings under the decking or increase gapping to 1 0 mm. » See additional pages for detailed gapping requirements .

5 mm

Width-to-Width The minimum required width-to-width gapping is 5 mm. This is allowed for both hot and cold weather installations. For docks and heavily timbered areas, Trex recommends a 10 mm gap. No gapping should ever exceed 13 mm.

Width-to-Width Gap

5 mm

3 mm – 5 mm

End-to-End/End-to-Width and Abutting Gap End-to-End/ End-to-Width Abutting Gap Above 5°C* 3 mm 6 mm Below 5°C* 5 mm 13 mm

1/8 " – 3/16 "

(3 mm – 5 mm)

3 mm – 5 mm

*Temperature at installation.

When you use the recommended hidden fasteners, the placement of the hidden fastener establishes the designated gap size.

End-to-End Gap Trex decking end-to-end, based upon the temperature at installation. End-to-Width

When installing fascia, gapping rules must apply.

6 mm – 13 mm

Abutting Solid Objects When decking is abutting a wall, you must also gap it 6–13 mm depending on the temperature at installation.

NOTE: Construction methods are always improving. Please refer to www.trex.com (and your country) for the most up-to-date installation requirements.

Fastening Tips – Decking

Clean Cut Boards IMPORTANT: You MUST clean cut boards on both ends (min. 5 mm).

To ensure an appealing mix of color tones, mix and match all boards prior to installation. (See inside cover for additional details.)

5mm

In most cases, install fasteners at a 32.2° angle (perpendicular to the board). At board ends on the deck's edge, you can install screws placed perpendicularly at the recommended distance, at minimum of 25 mm from the board end and edge, without splitting the board.

Routing Square Edge Boards for Trex Hideaway Hidden Fasteners NOTE: All Trex square edge profiles can be routed. Using a Trex router bit with standard router: 1. Rout from bottom side of board. 2. Rout the entire length of the board, or at every intersection where board is over support joists.

Abutted Board Attachment Requirements

Metal Framing

3 mm (>5°C) 5 mm (<5°C)

30 mm

NOTE: Optional - Gap joist framing 3 mm - 6mm to allow for water drainage.

NOTE: Hidden Fasteners MUST be used at every joist.

NOTE: Use a drill (with adjustable clutch and torque) and adjust these settings if necessary to ensure screw is seated correctly in fastener. DO NOT countersink the screw head into the fastener. Screw head should be flush with the top of the fastener.

Fastening Tips – Decking/ CONTINUED

Installation Tips for Large Temperature Shifts within 24-hour Period

For timber framing, and if using Trex Universal Hidden Fasteners, pre-drill and toenail an approved screw at an angle in groove at both ends 25 mm from board end and center of each board. For metal framing, use two approved decking screws at board ends.

Metal Framing

Wood Framing

Dock Applications Trex decking is approved for all water-contact applications. Boards can be submerged in water for extended periods of time, including multiple times a day with rising tides.

Stainless steel fasteners should be used.

In addition, if there is a great deal of contact between the dock and gasoline, grounding of the dock is also recommended.

NOTE: Construction methods are always improving. Please refer to www.trex.com (and your country) for the most up-to-date installation requirements.

TREX DECKING INSTALLATION REQUIREMENTS AND EXAMPLES NOTE: For questions on sub-constructions, please contact a Trex representative.

NOTES: » Gapping rules are required when installing Trex decking. Refer to examples for details. -depending on load requirements and/or if installing decking on an angle, framing spacing may need to be adjusted. » When using recommended screws to attach Trex decking, 2 screws are required at every framing member. » Depending on type of framing being used, different types of compatible decking fasteners must be used. Refer to chart on page 9 for compatible fasteners based on framing material being used. » Trex decking can be installed with many different designs and patterns. Diagonal installation, inlays, and many other variants are possible. Contact a Trex representative for more details. Included below are some basic examples.

A. Parallel Board Installation

>5 ˚ C=6 mm <5 ˚ C=13 mm (Distance between decking and solid wall)

Gap 5 mm

250

400

250

<35

>40

<15

250

Ensure framing is properly attached.

TREX DECKING INSTALLATION REQUIREMENTS AND EXAMPLES/ CONTINUED

NOTES: » To obtain a continuous joint pattern, boards must be averaged to their longitudinal axes. » Measure boards every fifth board (or earlier) to ensure both boards are properly aligned.

TIP: Proper planning can reduce scrap and waste.

B: Breaker Board Installation

>5 ˚ C=6 mm <5 ˚ C=13 mm (Distance between decking and solid wall)

Align along axis

>5 ˚ C=3 mm <5 ˚ C=5 mm

Gap 5 mm

400

250

Cross-bracing

250 400

400 250

250

400

400 250

Universal Hidden Fastener

<35

<15

Ensure framing is properly attached.

TREX DECKING INSTALLATION REQUIREMENTS AND EXAMPLES/ CONTINUED

To obtain a continuous joint pattern, boards must be averaged to their longitudinal axes!

Variance to Example B–Double Breaker Board Installation

>5 ˚ C=6 mm <5 ˚ C=13 mm (Distance between decking and solid wall)

Align along axis

>5 ˚ C=3 mm <5 ˚ C=5 mm

Gap 5 mm

400

250

250 400

400 250

250 400 250

TREX DECKING INSTALLATION REQUIREMENTS AND EXAMPLES/ CONTINUED

IMPORTANT: Each board end must rest on a separate sub-framing member and be attached with two universal fasteners or screws each! All sub-framing must be attached to the ground or secured by appropriate aluminum frame brackets as per previous examples.

C. Abutted Board Installation

>5 ˚ C=6 mm <5 ˚ C=13 mm

Gap 5 mm

>5 ˚ C=3 mm <5 ˚ C=5 mm

250

400

250 250

400

250

Universal Hidden Fastener DD

>5 ˚ C=3 mm <5 ˚ C=5 mm

<35

<15

X (Two screws per joist required)

X X

Ensure framing is properly attached

TREX DECKING INSTALLATION REQUIREMENTS AND EXAMPLES/ CONTINUED

D. Frame Edging Installation

>5 ˚ C=6 mm <5 ˚ C=13 mm (Distance between decking and solid wall)

Gap 5 mm

>5 ˚ C=3 mm <5 ˚ C=5 mm

250

400

>5 ˚ C=3 mm <5 ˚ C=5 mm

>5 ˚ C=6 mm <5 ˚ C=13 mm

140

<15

Ensure framing is properly attached

TREX DECKING INSTALLATION REQUIREMENTS AND EXAMPLES/ CONTINUED

Installing boards in a parallel abutting design is not recommended. Optical restrictions of the abutted joints can occur even after correct installation (see example B).

250

400

250 250

400 400

250

INSTALLING TREX DECKBOARDS USING TREX HIDEAWAY UNIVERSAL FASTENER - TIMBER FRAMING

6 mm >4°C 13 mm <4°C

NOTE: Use a piece of decking approx. 60 cm long to fix the Trex universal fastener for pressing two fasteners at the same time. This aid facilitates the correct assembly of the Universal fastener.

INSTALLING TREX DECKBOARDS USING TREX HIDEAWAY UNIVERSAL FASTENER – TIMBER FRAMING/ continued

Installing Last Deck Board (Square-Edge Board Recommended)

25mm

Route one side of square-edge board to use with hidden fasteners. NOTE: There are screws for edge mounting available in the same color as the decking. In addition, there are color matched plugs and screws also available for Transcend decking.

Fascia screws supplied by installer (14 mm x 148 mm fascia shown).

NOTE: Contact a Trex representative for more detail .

INSTALLING TREX DECKBOARDS USING TREX HIDEAWAY UNIVERSAL FASTENER – METAL FRAMING Note: Ensure to use approved Trex Universal fasteners that are approved with steel or aluminum framing.

TIP: Use a piece of decking approximately 60 cm long to fix the Trex universal fastener for pressing two fasteners at the same time. This aid facilitates the correct assembly of the Universal fastener.

NOTE: Construction methods are always improving. Please refer to www.trex.com (and your country) for the most up-to-date installation requirements.

INSTALLING TREX DECKBOARDS USING TREX HIDEAWAY UNIVERSAL FASTENER – METAL FRAMING/ CONTINUED

Installing Last Deck Board (Square-Edge Board Recommended)

25 mm

Rout one side of square-edge board to use with hidden fasteners.

Optional Fascia Installation

NOTE: Fascia wider than 60 mm will require more detailed fastener requirements. Fascia boards are not allowed to carry loads from decking. Contact a Trex representative for more detail.

REPLACING TREX BOARDS INSTALLED WITH TREX HIDEAWAY UNIVERSAL FASTENERS

New board at an angle

Existing Deck

Insert Fasteners

TREX FASCIA INSTALLATION RECOMMENDATIONS - TIMBER FRAMING

General Notes: » Trex Fascia utilized around the perimeter of a deck must be gapped with the same requirements as Trex decking to allow for expansion/contraction of the fascia. » When using 33 mm x 184 mm framing, attach fascia using 2 fascia recommended fasteners; when using 38 mm x 235 mm or larger framing, attach fascia using 3 fascia recommended fasteners. Top screw should be placed 25 mm from the top of the rim joist, the second screw in the center of the rim joist, and the third screw 25 mm from the bottom of the rim joist. WHEN USING RECOMMENDED FASCIA FASTENERS: » R ecommended fascia fasteners can only be used with 14 mm x 184 mm or 14 mm x 288 mm fascia product and cannot be used with decking products that are being used as fascia trim or stair risers.

Method 1: Fascia Under Decking ( Note: reflects 14 mm x 184 mm fascia installation & square- edge decking).

Method 2: Fascia Beside Decking ( Note: spacers below reflect 14 mm x 184 mm fascia installation) When using this method, attachment of spacers to framing may vary depending on the fascia size. If installing 14 mm x 288 mm fascia use two screws spaced properly apart so as to not interfere when installing fascia screws.

Decking

Fascia

Decking

Fascia

Decking

Install fascia UNDER decking edges/ends. This will optimize the aesthetics and performance of the installation.

Spacer

All images shown here reflect fascia under the decking as well as using recommended fascia screws .

Install 5 mm to 6 mm thick x minimum 25 mm wide exterior grade spacers (these should be cut the same length as the rim joist), and spaced 228 mm on center. Install fas- cia screws as stated below at spacer locations (ensure that spacer screw does not interfere with fascia screw). TIP: Prior to installing spacers, paint ends black so as these are not as visible (especially when using contrasting colors).

Miter Cut 3 mm (>4.4°C) 5 mm (<4.4°C)

Abutting Gap 6 mm (>4.4°C) 12.7 mm (<4.4°C)

Gap end-to-end 3 mm (>4.4°C) 5 mm (<4.4°C)

14 mm x 288 mm Fascia 38 mm x 235 mm (rim joist)

14 mm x 184 mm Fascia 38 mm x 184 mm (rim joist)

TREX FASCIA INSTALLATION RECOMMENDATIONS - TIMBER FRAMING

Using Fascia to Box in Stairs Cutting Fascia Method 1: Stair Stringer as Template

Fascia

1a. Using a stair stringer as a template, lay this on the fascia and trace out pattern for stair stringer, ensuring you also factor in stair tread/deck board thickness and riser thickness before cutting. This option is shown above. Proceed to step 3.

2. Once completed place fascia in proper location and trace around stair treads and risers and then cut to fit.

Method 2: Fascia Beside Decking

Installing Fascia To Stringers

Fascia

Spacer

1b. Another option is cutting fascia plumb to the rim joist at the top and flush at the bottom of the stairs as shown.

3. Spacers should be installed like that of standard decking, ensuring these are spaced 229 mm apart (see previous page for detailed information on all requirements for spacers).

29 NOTE: Construction methods are always improving. Please refer to www.trex.com for the most up-to-date installation requirements.

TREX FASCIA INSTALLATION RECOMMENDATIONS - TIMBER FRAMING

Using Fascia to Box in Stairs/ CONTINUED

Fascia

4. Install appropriate number of recommended fasteners as per pattern shown above, as overall size of fascia after being cut may be smaller than that of the standard size, thus the number of screws used every 457 mm may be different in different areas. Ensure screws are installed 25 mm from edge of stringer (do not install screws in the end of the stair tread).

5. If the fascia is not wide enough to cover the stair stringer, a secondary piece of fascia may need to be cut accordingly and installed. Install using one recommended fascia fastener on or near the space r.

SPANNING REQUIREMENTS FOR TREX STAIRS

NOTE: Shown with timber framing.

280 mm min. depth

Stringer

5 mm gapping

20 mm max. overhang

Fasten treads to all stringers

14 mm x 184 mm Riser

Trex fascia or trim

See chart below

Riser removed for clarity

91.4 cm minimum width – 4 stringers are required Above 91.4 cm width – 5 stringers are required

MAXIMUM SPACING OF STAIR JOISTS (Center-to-Center)

Transcend 25 x 140 mm

30 cm

Enhance 25 x 140 mm

23 cm

Transcend 33 x 140 mm

30 cm

NOTE: Construction methods are always improving. Please refer to www.trex.com (and your country) for the most up-to-date installation requirements.

INSTALLING TREX STAIR TREADS INSTALLED WITH TREX HIDEAWAY HIDDEN FASTENING SYSTEMS NOTE: Use square-edge, composite decking boards, manually routed on required sides, to allow for use with hidden fasteners. NOTE: Shown with timber framing.

6 mm >5°C 13 mm <5°C

Rout one side of board (A).

NOTES

DECKING COLOR PALETTE

WHIDBEY Signature®

OCRACOKE Signature®

BISCAYNE Transcend® Lineage®

ISLAND MIST Transcend® Lineage®

RAINIER Transcend® Lineage®

CARMEL Transcend® Lineage®

HATTERAS Transcend® Lineage®

JASPER Transcend® Lineage®

ISLAND MIST Transcend®

SALT FLAT Transcend® Lineage®

HAVANA GOLD Transcend®

TIKI TORCH Transcend®

ROPE SWING Transcend®

LAVA ROCK Transcend®

PEBBLE GREY Select®

SPICED RUM Transcend®

SADDLE Select®

FOGGY WHARF Enhance® Naturals

ROCKY HARBOR Enhance® Naturals

TOASTED SAND Enhance® Naturals

COASTAL BLUFF* Enhance® Naturals

CINNAMON COVE Enhance® Naturals

HONEY GROVE Enhance® Naturals

CLAM SHELL Enhance® Basics

NOT ALL DECKING AND RAILING COLORS ARE AVAILABLE IN YOUR MARKET. PLEASE CHECK WITH YOUR LOCAL MERCHANT TO DETERMINE AVAILABILITY.

HEAT MITIGATING *Our SunComfortable™ products with heat-mitigating technology are designed to be cooler than most other composite decking products of a similar color. Although engineered to be more comfortable, they can still get hot to the touch when direct sunlight and high temperatures con- verge for extended periods of time. On such days, care should be taken.

TIDE POOL Enhance® Basics

BEACH DUNE* Enhance® Basics

SADDLE Enhance® Basics

*Beach Dune and Coastal Bluff will be discontinued effective October 2025

FRONT: decking: Transcend® in Havana Gold (HG) BACK: decking: Transcend® Lineage® in Island Mist (IM)

Visit trex.com or call 1-800-BUY-TREX

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© 2025 Trex Company, Inc. All rights reserved. Trex®, the Trex logo, TrexPro®, Enhance®, Trex Select®, Transcend®, Lineage®, Trex Signature®, Trex® OutdoorLighting, and Trex Hideaway® are either federally registered trademarks, trademarks or trade dress of Trex Company, Inc., Winchester, Virginia or its licensees.

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