This deck already has composite decking and deck railings installed. See the steps in How to Build a Deck: Composite Decking and Railings . It's common to build the framing with treated lumber and use composite surface material, as with the decking and stairs on this deck.
Break Down: It would be entirely possible and logical to use a full 16' board to extend from the edge of the deck to the exact center of a joist, since 16 feet would land right on a joist center. After trimming the ends of the composite deck boards I used a belt sander to round over the sharp corners. TrapEase Composite Deck Screws
How to install your Composite Decking. Place your first board and screw it into each joist it crosses using a row of starter clips. Then fit T-clips into the groove along the side of the board and screw them into each supporting joists with the screws provided, one T-Clip for each supporting joist
Screw down both ends of your straightedge after marking the decking. Then measure the distance from the line to the straightedge in the center to make sure its the same as the end measurements. If necessary, bend the guide board until the measurement is the same and screw down the center.
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Installing Composite Decking. These clip systems generally are screwed into to the deck frame across each joist and fit tightly into a cavity running down the side of the boards. We recommend using reverse thread screws when face-screwing composite decking to eliminate mushrooming. Mushrooming occurs when a standard bugle head screw pulls
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