Deck Board Gapping for Tiger Claw Hidden Fasteners


One of the most common questions that we receive is about the gap size that is created by the Tiger Claw Hidden Fastening System.  While the gap produced is marked clearly on our product pages, we thought it would be beneficial to list the gapping of all fasteners in one place for easy reference.

Tiger Claw Deck Board Gap Reference Chart

Product Gapping Contraction and Expansion Notes
TC-1 and TC-2 for Soft Wood Up to 1/4″ Boards should be installed tight together and allowed to “shrink gap” over time. Fasteners are designed to allow wood decking to expand and contract naturally by sliding on the fastener prongs and still maintain hold down strength. From the original point of installation TC-1S and TC-2S can handle up to  1/4 inch of contraction.
TC-3 for Composites 3/16″ TC-3S automatically creates a gap between each decking board slightly greater than 3/16”. With the use of spacers or shims, TC-3S can support gapping up to 5/16”. TC-3S is designed to allow decking to expand and contract naturally by sliding on the fastener prongs and still maintain hold down strength. From the point of installation, the TC-3S Fastener can handle expansion up to 1/8” and contraction up to 3/16″
TC-4 for Hard Wood 1/8″ TC-4S will automatically create a 1/8” space between each board. Fasteners are designed to allow decking to expand and contract naturally by sliding on the fastener prongs and still maintain hold down strength. TC-4S can handle total board movement up to 1/8th of an inch.
TC-G for 1″ Grooved 3/16″ TC-G will automatically create a 3/16” space between each board. The TC-G allows decking to expand and contract naturally by sliding on the fastener tab and still maintain hold down strength. The TC-G is also designed to maintain consistent spacing as deck boards expand and contract.
TC-120 for 3/4″ Grooved 1/8″ The TC-120 will automatically create a 1/8” space between each board. Fasteners are designed to allow decking to expand and contract naturally by sliding on the fastener tab and still maintain hold down strength. TC-120 is designed to maintain consistent spacing as deck boards expand and contract.
ProClip for Azek 1/8″ ProClip will automatically create a 1/8” space between each board. Fasteners are designed to allow decking to expand and contract naturally by sliding on the fastener prongs and still maintain hold down strength. Cellular PVC decking experiences very little expansion and contraction as temperatures change.

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