Installment of EXTREMEKD Ipe Clip BROWN hidden deck fasteners with a 1/4 in. gap is straight forward. DIY home-owners and contractors get a high end, fastener-free decking surface. EXTREMEKD fasteners use an edge-mount method to affix hardwood decking boards. This also makes these deck fasteners practically invisible after the installation. Our proprietary design offers camouflage among gaps of the deck boards, keeping the fastener hidden. EXTREMEKD is shaped from a molded polypropylene that provides additional chemical and ultraviolet ray resilient properties. These fasteners are made with a black oxide coated stainless steel insert for strength. This adds prolonged hold-down properties between decking and joists. EXTREMEKD hidden deck fasteners are lab tested to be up to 3-times more sturdy, compared to other edge-mount fasteners. When using the EXTREMEKD, deck boards are secured solely on one side. This permits for the natural contraction and expansion that occurs on the width of hardwood decking. Biscuit deck fasteners, such as the EXTREMEKD, slide directly into the deck board's edge groove. Installers may router the required 5/32 in. side groove on site or use a biscuit joiner. Many decide to invest in pre-grooved boards purchased from lumber yards. Deck screws are installed at 45° through the fastener, down into the bottom groove edge of the board and into the joist. This places each deck board with even and consistent gaps due to the fastener's incorporated spacer leg.