May I suggest that if you are buying new top deck lumber, go with (treated) 2"x8" tongue and groove. The boards are much stronger than 5/4"x6" (which I think of as "deck size") and stronger than 2"x6", plus with the T&G the boards help support each other. I have one 2"x8" T&G dock and one 2"x6" dock; the former has a LOT less sag despite being 2" wider. I have seen enough 5/4"x6" treated wooden fence problems that I never considered it for docks.


"Live like you'll die tomorrow, but manage your grass like you'll live forever."
-S. M. Stirling
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