I have a coworker who is putting down plywood in his attic for general
storage use. The joists are 16" on center and he was thinking of using
1/2" ply Is this sufficient or should he use 3/4" ply?
But he will be on it to move things around. I find it a little un-nerving to
walk on 1/2". Even the 5/8" I used makes me be more careful then I probably
need to. Just don't like that 'sinking' feeling as you walk across it.
I'd say the first question is whether or not the existing joists can
handle the load of the plywood, storage and someone walking around accessing
the storage. Then comes the question about local codes.
I Agree 100% with previous replies, but in general people do this all the
time. That said, I wouldn't store a PIANO or a load of BRICKS in the attic,
NOR would I store things that don't like heat (like candles, christmas
decorations, plastic stuff, etc) since summers will bake anything up there
for long period of time, discoloring nearly everything man-made.
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