Hardwood flooring mistake: How bad was it?

I just finished two rooms with hardwood flooring. I was told that the flooring should go perpendicular to the joists. In one room I remembered that. In the other I forgot.
The theory is that there's a tiny bit of flex between the joist that will eventaully cause the flooring to sqeak and maybe bow ever so slightly (but visibly).
I certainly don't plan to rip all the flooring up but I would like to know just hw serious of a mistake did I make.....
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The floor is nailed to the subfloor so it is not a question of falling apart. I'd run it the way it looks best. This has been discussed before, but there has been no evidence of any problems going in a different direction.
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Depends on subflooring material. Have 2 rooms of 3/4" oak flooring that has to be redone because it was not perpend'r to joists. This was over 5/8" ply and the hardwood planking is starting to swell and lift which results in 'speed bumps' all over the floor. Could be due to moist indoor air and swelling of wood?
-- Troweller^nospam^@canada.com
Remove the obvious to reply. Experienced and reliable Concrete Finishing and Synthetic Stucco application in the GTA.
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Top posting repaired...
ConcreteFinishing&StuccoGuy wrote:

If it's raising from swelling, the direction it's laid isn't going to solve the problem. It's either on an inappropriate subfloor or has no expansion room around edges or there is a moisture problem from somewhere.
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On Sun, 29 May 2005 09:15:06 -0500, Duane Bozarth

I'd have to concur with this assessment based on everything I've seen.
-- John Willis (Remove the Primes before e-mailing me)
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Thanks for all the comments, folks. FYI, I have 3/4 inch OSB as a sub floor. It's darn dry in Colorado so moisture is probably not a big issue.
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