
Trex Transcend 1-in x 6-in x 16-ft Rope Swing Grooved/Solid Composite Deck Board
what are the subsurface requirements? Can trex be place over concrete, sand, or on treated lumber directly on the ground?
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Hello, and thank you for considering Trex products! Trex composite boards require at least 1 1/2" clearance for proper water drainage and air flow. If you're installing on top of a solid surface, a sleeper system would need to be used before installing Trex boards. For more installation requirements, please see our installation guide on trex.com. Kindly, Elisabeth-Trex Customer Care
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