Whag is the difference between using the grooved vs square board?
1
Thank you for your question. Grooved boards allow for hidden fastening clip systems such as ConceaLoc and FusionLoc. While the squared shoulder boards can be used in conjunction with top-down fasteners such as TopLoc color match screws, Cortex hidden screw and matching plugs, or the SideLoc fastening system. For more information and videos on each of these fastening methods, please visit https://www.timbertech.com/resources/deck-building/. - AZEK Customer Care
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