2026 Trex® Decking Installation Guide

Code Compliance/ Continued

Canada Requirements For Trex ® Decking: The following changes are to be followed with respect to spans and gapping instructions; these spans are specific for Canada requirements only.

Canada Allowable Joist and Stair Stringer Spacing

Product

Maximum Allowable Joist Spacing

Maximum Allowable Stair Stringer Spacing

21 mm x 140 mm Select Decking

400 mm

200 mm

230 mm

24 mm x 140 mm Transcend Decking

400 mm

24 mm x 140 mm Signature Decking

400 mm

275 mm

24 mm x 140 mm Enhance Decking

300 mm

200 mm

33 mm x 140 mm Select Decking

600 mm

250 mm

33 mm x 140 mm Transcend Decking

600 mm

250 mm

Canada Gapping Requirements

Gap Type

Temperature at Time of Installation

Minimum Gap Requirement (mm)

Width-to-Width Gap

Above -9°C

5

End-to-End

Above 15°C

4

End-to-End

Between 3°C to 15°C

6

End-to-End

Between -9°C to 3°C

8

End-to-Solid Object

Above 3°C

6

End-to-Solid Object

Between -9°C to 3°C

13

23

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