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I’m laying engineered wood flooring on concrete floor – can I use plyboard to flatten floor out?

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I’d like to lay engineered wooden flooring in my 3rd floor flat. Lifted up old laminate flooring and concrete floor is not even / flat (up to 7mm difference in parts) – there is a bulge running through centre of floor. Area is around 40sq in total. Thinking of using plyboard to raise rest of room up to bulge level and perhaps self leveling in the centre to even out. Any thoughts please? Thanks

That is a tough question . I am in two minds on this one.
It depends on the variation between the highs and lows etc
I am tempted to suggest that you grind the floor. It might help
Using a self levelling compound with the grinding is the way i would go. The ply wood bit is really hard. I do not actually recommend that one. Also would raise the floor levels as well.

4 Responses to “I’m laying engineered wood flooring on concrete floor – can I use plyboard to flatten floor out?”

  1. RickiLynn A Says:

    yes have fun
    References :

  2. MeowMeow Says:

    Won’t it be a bit of a nightmare to true it up with plywood? Sounds like a lot of shimming and screwing around to get it to work. The self-leveling sounds good…but make sure you know how to work with it first, or having someone experience do it for you.
    References :

  3. jakeb Says:

    7mm difference is not enough to bother attempting to improve it. Floating wood or laminate flooring will lay fine with uneven floors being no more than 7mm irregular. Just use a foam underlayment pad made for floating floors, it will work out okay.
    References :

  4. Robert K Says:

    That is a tough question . I am in two minds on this one.
    It depends on the variation between the highs and lows etc
    I am tempted to suggest that you grind the floor. It might help
    Using a self levelling compound with the grinding is the way i would go. The ply wood bit is really hard. I do not actually recommend that one. Also would raise the floor levels as well.
    References :

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