PRESSURE-TREATED FRAMING REQUIREMENTS, GAPPING AND BUTT JOISTS
5 mm (>4.5°C)
3 mm (>4.5°C) 5 mm (<4.5°C)
3 mm (>4.5°C) 5 mm (<4.5°C)
Max. 19 mm
6 mm
Note: a shortened section of joist (verses a full second joist) can also be attached to the main joist (no gap between joists) to serve as the same function as shown here .
NOTES: » This system should not float; it must be attached securely to framing system. » With wood framing, all cut ends should be coated to preserve ends. Refer to local building supplier for what can be used. » When using screws to attach decking to framing, use two screws per every joist. » For added protection to wood framing, use Trex®Protect® Joist and Beam Tape on the top of joists, rim joists, and ledger boards.
Residential <450 mm Commercial: Refer to Span tables on Website
Min. 38 mm
Min. 38 mm
10 NOTE: Construction methods are always improving. Please refer to www.trex.com for the most up-to-date installation requirements.
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