2025 UK Decking Installation Guide

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

1

1

2

2

3

3

BB

400

250

Cross-bracing

250 400

400 250

250

400

400 250

BB

Universal Hidden Fastener

<35

5

<15

Ensure framing is properly attached.

18

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