Hidden decking fastener and related method of fastening deck boards

A method of securing slats to a support, the method comprising:

• laying slats to be secured to a support adjacent to one another, edges of the slats comprising grooves formed therein;
• providing a fastener for securing the slats to the support, the fastener comprising:
• a base portion including an opening formed therethrough for receiving a securing device, and legs extending from an upper surface of the base portion, and
• a cap portion on the upper surface of the base portion, the cap portion including an opening for receiving the securing device therethrough, and legs extending around the base portion and comprising teeth extending therefrom;
• placing the extending legs of the base portion between edges of the adjacent slats to define a spacing between the adjacent slats;
• positioning the legs of the cap portion within the grooves formed in the edges of the slats;
• inserting the securing device through the openings in the cap portion and in the base portion;
• and
• driving the securing device into the support and thereby against the cap portion to cause the teeth to bite into inner surfaces of the grooves to secure the slats to the support.