Can hidden clips be used as fasteners when installing TimberTech AZEK deck as cladding?

Yes, TimberTech recommends our Cortex® hidden fastener system, which conceals the screws with plugs made from our decking. Our Cortex fasteners are offered with a 2½” screw, and we also offer a version of Cortex with a 2” screw designed specifically for cladding applications over block construction. Other hidden fasteners, like TimberTech’s CONCEALoc or FUSIONLoc fasteners or any competitive hidden fasteners are not recommended for the cladding application.

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