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Old 06-13-2011, 01:11 PM   #1
Join Date: May 2011
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Engineered wood on concrete - how flat does sub-floor need to be?

Yes, another question......

I have been using self leveling compound on the low spots in my master bedroom, feathering out the edges where I am pouring it. It seems like it is working pretty well, but on one area I poured, it actually made a slight mound I was not expecting. I was planning on chiseling out the mound tonight and once removed, hopefully be able to fill in the low spot of 1/8" with extra glue.

How flat does the sub-floor need to be for engineered wood?

I am thinking 1/8" and around there variance should be fine.


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Old 06-13-2011, 01:29 PM   #2
Join Date: Sep 2008
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Engineered wood on concrete - how flat does sub-floor need to be?

The flooring manufacturer should be the final word - they typically provide a specification of 1/8" to 3/16" over 8-10'. The flatter the better of course.

A Google provides a variety of similar comments.

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