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Posted by RicodJour on August 7, 2008, 8:16 pm
> I am installing 3/4 inch oak hardwood in a hallway 20 ft long and 4 1/2 f=
t
> wide. I am installing it the "long way" on a 5/8 inch plywood subfloor. M=
y
> problem is that the 12 inch floor joists change directions so that the
> hardwood will be parallel with the joists for the last 7 feet of the
> hallway. The joists are on 16 inch centers and I thought about going unde=
r
> the floor and installing blocks between the joists, but the central heat
> ductwork is in the way. The only way I can put blocks in is to cut into t=
he
> subfloor and pull enough of it up to put the blocks in from the top. I wo=
uld
> also have to attach blocks to the existing joists to have something to na=
il
> to when replacing the subfloor. Is this all necessary, or can I just lay =
the
> hardwood on the floor the way it is for that short distance. Thanks for t=
he
> help.
I don't like running strip flooring parallel to the joists,
particularly in high traffic areas with a thin subfloor. I wouldn't
seriously consider running it parallel on anything less than 3/4"
sheathing with joists 16" OC, and I'd still be thinking of maybe
laminating 1/4" plywood depending on what's going on with the
adjoining flooring.
You would know you had made the wrong decision when the floor gaps
indicate the location of the parallel floor joist, indicating a high
spot. This occurs over the joist. The floor gaps between the joists
would have less of a gap indicating a dip in the floor.
You may also consider laying the floor diagonally as already
mentioned, or a herringbone pattern. Then again, you might not be
bothered by gaps in the floor and/or you're not planning on being
there for long, so it's your call! ;)
R
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