Leveling Concrete subfloor in a flat

Old 12-27-12, 03:41 PM
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Join Date: Dec 2012
Location: United Kingdom
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Leveling Concrete subfloor in a flat


We have recently bought a 1970's build flat in London. We're on the 2nd floor with a flat below and above.

We want to lay engineered flooring, but noticed that the existing floor boards were bouncy (make the TV wobble)and we'd need to fix that before laying new floor. On taking up the old floor boards we saw that there were unfixed battens laying on a thin layer of insulation. The concrete subfloor under this is rather uneven, up to 1cm in places so the battens were able to flex and pivot, meaning that the floor boards on top would wobble as well.

We are now back to the main subfloor and really need to work out how we level before re-laying battens and a new floor. The main problem is that there seems to be a fairly deep crack in the middle of the room. We have no idea if this goes through to the flat underneath. So a self leveling compound makes us a little nervous.

We've read a bit about acoustic cradles for batten that can be adjusted to compensate for the uneven floor.

Just wondered if anyone else has any other ideas or thoughts of how to rectify this. It seems as if we'll need to repeat the process throughout the flat!

Thank you
Old 01-02-13, 10:07 AM
Join Date: May 2012
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I'm not sure what you mean by "battens". Can you post some pictures, please?

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