Quote Originally Posted by SAnd View Post
"I was smart enough to use 16" OC framing on the initial build so going to composite shouldn't be an issue excepting for laying out a diagonal pattern."

You might want to check on that. I built mine with 14 inch spacing which I'm sure is what Trex recommended at that time. Also a diagonal pattern would require closer spacing, the angle means that the deck planks are spanning a longer distance.

I don't mean to be negative but it wouldn't be nice to have any sagging.

I wish you well.
Correct you are on the diagonal spacing...some patterns require 12". I think I will leave the framing as-is...except for the areas around the perimeter where I will have to add additional blocking and nailing surface for a picture frame border.