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On Apr 23, 9:47 pm, mj2...@yahoo.com wrote:
> Is there any reason why I wouldn't want to use either 1/4-inch lauan
> or hardboard as underlayment for 3/4-inch oak flooring strips
> (nailed)? The subfloor is 3/4-inch OSB with somewhat rough, uneven
> surface and hardened glue in some places, which is why I want to put
> down an underlayment to provide a more even surface for the finish
> floor. I know I could use 1/4-inch plywood, but that is a little more
> expensive than both the lauan and the hardboard. But if there's a good
> reason not to use one or both then I'll spend the extra money for
> the plywood to ensure a solid installation. Also, what is the
> recommended way of attaching 1/4-inch underlayment to the OSB
> subfloor? I think the 7/8-inch staples I already have would be the
> quickest - is that okay? Thanks!
At this moment, I am installing 2-1/4 X 3/4 on 3/4 OSB and it too is
somewhat rough....meaning that there are slight differences from the
procuct and when the rain swamped the house when it was open. The
installation is going well, and it's extremely solid once down. I
do not believe you would be adding any benefit with the 1/4". It would
be smoother, but that's also 5/16 or so less staple or nail that hits
the sub floor. Also keep in mind that 1/4 will not mask any
inperfections with humps and bumps.
Rent belt sander from the renal store, and run it over the OSB knock
off the high spots like near the seams, do not use it on the glue
bumps, it melts into the belt (DAMHIKT). Take a sharp chisle and cut
the glue globs off. If it's too hard, add some heat from a heat gun,
it'll soften right up.
Good luck, I hope you have a strong back ;-)
DAC
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Re: Underlayment advice for oak flooring strips
