Originally Posted by rafterman
I checked with DRE just now and they use 1/2'' HDPE as their standard decking board.
Dre also use aluminum angle for frames under their decks to use the 1/2" for tables.
I just picked up a 20"x72" sheet of HDPE and am not worried about flex on the 20" with it on the frame. It will not work as a table with out something underneath to prevent flex on the other direction.