Do You Gap Trex Decking

All deck boards must always be installed with a 6mm side-to-side gap. The Trex Hideaway Hidden Fasteners automatically measure the 6mm gap between grooved edge boards but you must still ensure the 6mm gap with the square edge boards.

Does Trex decking have gaps?

For Trex decking, the recommended end-to-end and side gaps range from 1/8 inch to 3/16 inch, depending on the temperature during installation. The gap against the permanent structure ranges from 1/4 inch to 1/2 inch, depending on the installation temperature.

What is the recommended spacing for Trex decking?

Most composite and PVC decking brands, like Trex and Azek, recommend a maximum joist spacing of 16 inches OC. Some brands, like WearDeck, let you get away with more – reinforced with a layer of fiberglass on both the top and bottom, WearDeck boards easily allow for spans of 24 inches OC.