Grain Direction When Laying Deck Board
I recently built a small ‘floating’ porch for an out-building. The porch is just resting on some concrete pavers laid on compacted crushed stone. The wood is all pressure-treated southern yellow pine. It was straight, but also pretty wet. I debated whether to let it dry before starting, but was concerned it could warp, twist, etc., so I went ahead and started. I treated all the cut ends with ACQ preservative, and fastened everything with HeadLOK screws and Simpson hot-dip galvanized nails and hardware. I put joist flashing tape on top of all the framing. The deck boards are 2×6. I butted them together tight, thinking they would shrink, which they have.
My question is about which is the right way to lay the deck boards. I set them all so the end grain arched ‘upward’, thinking that if the boards cupped, they would follow the grain. Some boards have cupped slightly, but in the opposite direction from what I hoped (see picture), with the edges up. Did I lay these boards upside down? At least the cupping is slight, and does not pose a trip hazard. Thanks, Don Christensen
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