Trailer deck

[Dick Brown]

I know I should remember this BUT I claim senior moment! Decking a trailer for a friend with green fir. It will be screwed down well but I know it will still cup some as it dries. Would like the edges down and if there is a hump in the middle, have it up. ( 2" x 8" or 2" x 10" boards.) The question -- Heart up or down???
I KNEW YOU GUYS COULD REFRESH THIS OLD HEAD!
Thanks,
Dick

[Judson Green]

Here ya go

288372

[Bob Wingard]

I just did a deck on my trailer yesterday ... I cut a lengthwise groove about 2" in from each edge of the 2"X8"'s ... it is about 1"deep. Gives the wood some place to "move" ... I've seen a few commercial trailer builders using this method, and thought I'd give it a try. I used to think convex side up, but I'm beginning to believe it really doesn't matter, and I actually think the grooving is going to do more good.

[Danny Hamsley]

Wood cups toward the bark. But the bark side down.

[John Lanciani]

Heart up will give the best results but even then they will have the tendency to cup up due to the sun drying the tops out more over time.

[Mel Fulks]

Over time usually all will cup regardless of orientation. With the bark side up you at least eliminate all that razor blade like
grain lifting.