prepare plank floorboard floor for laminate (one is 10mm higher than others)

Discussion in 'Floors, Stairs and Lofts' started by Sup9, 13 Apr 2020.

  1. Sup9

    Sup9

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    I'm looking to install laminate flooring on landing, I've removed the carpet underlay and screwed down all the plank floor boards. But one of the plank board is 5mm higher than the rest (10mm higher at the highest point). It's the brick wall underneath kept it raised, (I'm guessing the joints sacking a bit?) Was planning to chop off the bricks a little bit, but the utility room wall is sitting on top of this plank, so that bit I can't touch.

    So is it better to just lay 5mm ply board over the plank boards (apart from the raised one) then 5mm underlay? then at the highest plank board area (where the wall is built on top of it), I'll just not use underlay and have laminate directly on top of it - think it should be okay this is not a busy area, so wear and noise shouldn't be a problem.

    Just want to check if this is the right way to prepare the floor or is there other options?

     
  2. foxhole

    foxhole

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    You could cut round the offending board with a multi tool and remove problem completely. plane board down to prevent it being proud and reinstate.
     
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  4. Sup9

    Sup9

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    For the middle section of the offending board (lifted in 1st pic), should I chop off the top of the brick/concrete mixture so the plank can sit on the joints rather than the bricks? for the two sections that have brick wall built on top of the plank floor board, I can use multi tool to cut off the top few mm's to make even with other floor boards. I guess I'm doing this instead of lay ply board on top of the floor board to make level, is because the ply board provides no additional advantages (was hoping that it also helps to prevent squeaking noise - but I already screwed down all the plank floor boards with the special screw so not sure how much it helps)?
     
  5. Johnny Allround

    Johnny Allround

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    Don’t complicate things you’ve got the answer with the plywood to marry up to the rouge board level. However just check the existing door clearance height when you’ve fit the laminate. Hope this helps.
     
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  7. Sup9

    Sup9

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    Thanks for the input. I'm a little confused of why cutting/thinner the offending board making it complicated, I actually think it's less effort compared if I were to lay plywood over the landing area. I have not checked the clearance under the doors but it will be a lot of work if I had to trim them due to the raised height (7 doors). Would you explain a little bit more why you think it's better to lay ply board to make up the difference?
     
  8. DIYnot Local

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