I believe that OSB crap is the most dimensionally unstable wood product
ever invented or sawed. 7/16 sheeting becomes 5/8 thick after being in
the normal air for a couple years and stabilizing. Is there a vapor
barrier under the floor? I am guessing you have the cheaped out 3/4 OSB
crap (23/32) and it has swollen to 1" Real 3/4" plywood is 10 times
better, especially for floors. Of course if you live in parts of CA, AZ
or NV, ymmv in the desert. I suspect over the next 20-50 years there
will be a whole lot of that crap torn out and replaced. Not an easy
proposition when the whole building is built on the deck covered with OSB.
They used sawdust glued together with urea-formaldahyde or worse, water
soluble glue in trailer houses for years. a few drops of water and
you get a hole in the floor. Bad deal.
And now they have priced 3/4 plywood out o sight. Not good!
I think the 3/4 AWWF (.60) treated plywood might be cheaper than plain
plywood if you are building a house and buying 20 or more sheets at a
time. The folks that use plywood for basement walls need to be
competitive. About 5 yrs ago it was very competitive with regular
plywood and not much more than the OSB crap.
Kaleb C. Striplin via Mercedes <mailto:mercedes@okiebenz.com>
February 26, 2017 at 5:24 PM
Yesterday while at Lowes we bought 23/32 osb subflooring which
appeared to be too thin compared to the subfloor in the house. When I
measured our existing floor I get 1". There appears to be no such
thing as 1". We took it back and got the 1 1/8 which I figure maybe I
was reading it wrong by an 8th of an inch on the measuring tape. Got
it home cut to fit and where as the trim base boards around the rest
of the room have a gap big enough for the previous tile and will allow
the pergo to slide up under, this subfloor fits right up with the trim
board with no room, it is obviously is just a little thicker than what
is in the house. So our options appear to be to either leave it as is
and use quarter round along the baseboard to secure the edge of the
pergo, or we are going to have to go back with the smaller and I'm
afraid it may be way too short compared to the adjacent subflooring. Wtf?
Sent from my iPhone
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