composite deck boards . for example, if you decide to picture-frame your deck, you might use non-grooved boards for most of the job, but frame it with grooved boards to produce a finished, square-edge result.
right: rip a treated 2 x 2 (1-1/2-by-1-1/2-inch), then use a router with a round-over bit to shape the rounded edges. left: then round the ends on a bandsaw or disc sander for a further finished look. right: 5/4-inch deck boards added as siding creates an unusual look to close off the sides of a step. steps .
composite decking products are not the same color all the way through, so you'll want to cover the ends. one solution is to . two places our pros often see deterioration are along the top edge, where the decking traps moisture, and in between two joists that have been sandwiched together. rolling butyl .
composite decking, i use pvc trim on all pressure treated framing. the pvc trim will cause the deck to overhang the framing by 1-3/4 to create a 1 finished overhang. this means your starting perimeter board's inside edge needs to be exactly 3-3/4 from the outside of the framing. you can use a chalk .
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