Subfloor prep before laminate

freemanbrian12October 19, 2013

I plan to lay a tongue and groove floating laminate floor in my living room. After I pulled up the carpet I found the sub floor is particle board and isn't perfectly flat. It is higher at all seams and lower in the center of the panels. I would say the biggest gaps are about 3/16" across my 4' level.

I tried sanding at the seams but it didn't help much without taking quite a bit of material off.

Is a leveling compound an option or is replacing the sub floor with plywood my only hope?

Thank you,

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You need to lift the subflooring and find and fix whatever is causing the seams to be high and the centers to be lower.

Adding "blocking" may be what is needed: cross connections between joists for extra support.

    Bookmark   October 19, 2013 at 4:34PM
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