you could try removing a floor register and measuring there.

"duckdude" wrote in message
...

"marson" wrote in message
oups.com...
the panels should indeed be 3/4" (well, actually 23/32) measured on a
ruler. Are you sure you are measuring the full sheet, and not bumping
the tongue with your ruler or something? if it was actually 1/4"
thick, you would definitly notice the flimsyness and there would be
bellies between the joists.



well, there was a small gap in between 2 panels, and i
could stick a ruler into the gap (and could peek thru it
to see the basement). so when i stuck the ruler into the
gap, and measured the plywood thickness at that gap edge,
it was about 1/4" or so.

but yet the plywood panel underneath is stamped 23/32,
tongue & groove.

the panels are all flat and don't seem to be flimsy, so
it's a mystery that made me ask if i'm measuring it wrong.

so if it really was 1/4" thick, i'd know it for sure ??

the joists are 2x10's 16" o.c. (and some areas are double
and triple joisted, and there are wood cross braces in
between most of them - there's a fireplace in the same
room) with those plywood subfloor panels.