What is a deck biscuit?

A: This refers to the to the EB-TY® Hidden-Deck Fastening SystemsTM . The EB-TY® biscuits fit into kerf cuts that are made into the deck boards (either cut with a plate-joiner tool at joist intersections or continuous kerfs on side of board). A screw is put into each biscuit at 45 degree angle at each intersection of decking and joists.) The EB-TY® biscuit has a spacer keel that keeps the next board at the appropriate location called for (EB-TY keel widths vary to suit the different deck material requirements.) This procedure is repeated until you reach the edge of the deck. The last board is then screwed and plugged.

Photo curtesy of EB-TY® Hidden-Deck Fastening SystemsTM