1. Visiting from the US? Why not try DIYnot.US instead? Click here to continue to DIYnot.US.
    Dismiss Notice

Levelling where extension concrete floor meets existing timber floor

Discussion in 'Floors, Stairs and Lofts' started by jimtg_90, 10 Sep 2021.

  1. jimtg_90

    jimtg_90

    Joined:
    8 Dec 2013
    Messages:
    35
    Thanks Received:
    1
    Location:
    Bristol
    Country:
    United Kingdom
    We're having an extension built - knocking through the existing kitchen to make a kitchen diner and the builders will soon be laying the insulation and screeding. The existing kitchen floor is currently tiled.

    Should I ask the builders to bring the screed level to the existing timber floor? (i.e. after removing the tiles + any subfloor that is under the tiles?

    The problem I can see with this is that I will need to lay 6mm ply over the wooden floor area before laying the new floor but I assume I wouldn't do this over the concrete extension floor - so the existing kitchen floor level will then be 6mm higher than the extension.

    The new floor wil either be LVT or ceramic tiles - haven't decided yet.

    If I do as above - would I then need to use self levelling compound over the extension concrete floor to bring it up 6mm?

    Alternatively should I lay the 6mm ply before they screed and ask them to bring the screed up to the level of the ply?

    Thanks in advance
     
  2. foxhole

    foxhole

    Joined:
    14 Mar 2006
    Messages:
    18,010
    Thanks Received:
    2,065
    Location:
    Kent
    Country:
    United Kingdom
    6mm cement boards.
     
  3. Sponsored Links
  4. jimtg_90

    jimtg_90

    Joined:
    8 Dec 2013
    Messages:
    35
    Thanks Received:
    1
    Location:
    Bristol
    Country:
    United Kingdom
    Thanks @foxhole - I assume you mean lay the 6mm cement boards over both the concrete extension and the wooden floor? What sort of adhesive do you use to attach them to the concrete/screed?
     
  5. dazlight

    dazlight

    Joined:
    6 Apr 2012
    Messages:
    1,714
    Thanks Received:
    284
    Location:
    Merseyside
    Country:
    United Kingdom
    Alternatively should I lay the 6mm ply before they screed and ask them to bring the screed up to the level of the ply?

    Thanks in advance[/QUOTE]

    Yes do this. Then you can do a 5mm coat of a fibre smoothing compound over the lot ready for Lvt or ceramics

    you will prob need a moisture suppressant on top of the new screed
     
  6. Sponsored Links
Loading...

Share This Page