Decking hidden fasteners: universal deck fastener and hidden composite screw for decking installation and outdoor living spaces in wood and wood plastic composite
2. Pre-drill the first deck board with a 3mm drill. Use Cobra® screws along the outside edge. The screw placement should be at 25mm from the edge and 35mm from the end to prevent cracking of the board. Do not over-tighten the screws.
3. Insert COBRA® fastener into the groove channel of the board at every support joist. Install the screw (provided with the fasteners) and do not over-tighten yet
4. Position the next board against the fastener. Slightly lift the outer edge of the board to ease the assembly of the board onto the fastener
5. Tighten the COBRA® screws down. A special bit is provided.
Continue the same procedure till the deck is finished. Adjust the final board and fix it with Cobra® screws.