Concrete floor.

Discussion in 'Subfloor Preparation' started by Lee bond, Mar 28, 2021.

  1. Lee bond

    Lee bond Well-Known Member

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    Hi.
    I'm in need of some help.

    I'm trying to level a 30m2 concrete floor. In one corner there's a difference of about 14mm down to nothing in places. What's the best self leveling compound to use. Or is there any companies that do floor preparation in the Birmingham area?
     
  2. Distinctive Adam

    Distinctive Adam Well-Known Member

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    Go for Murexin Mx flex, Ardex hb40, mapei renovation, level it renovate - all go to 40mm deep in one application
     
  3. Lee bond

    Lee bond Well-Known Member

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    Will mapei renovation compound go over bitumin and what primer do I need?
     
  4. dazlight

    dazlight Super Moderator

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    No it will fail. Best screed for that is ardex NA
     
  5. Lee bond

    Lee bond Well-Known Member

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    how would i use mapei renovation compound over bitumin
     
  6. dazlight

    dazlight Super Moderator

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    As I said you can’t. It is a water mix and to hard. It will shear off over time.
     
  7. Lee bond

    Lee bond Well-Known Member

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    wheres the best place to get ardexna
     
  8. Lee bond

    Lee bond Well-Known Member

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    Can I use ardex na for 14mm in one corner with out aggregate?
     
  9. Lee bond

    Lee bond Well-Known Member

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    Whats the best primer for dusty concrete and a bit of vinyl adhesive down which is stuck well
     
  10. dazlight

    dazlight Super Moderator

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    You could buy it at a local flooring stockiest.
    You won’t need to use Primer over bitumen.
    You would need to do 2 coats to get to 14mm. Do the first coat at 6-7mm where you need to build it up.
     
  11. Distinctive Adam

    Distinctive Adam Well-Known Member

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    Dazlight is right if over bitumen, just Chuck NA down
     
  12. Lee bond

    Lee bond Well-Known Member

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    Hi. Do I need to primer in-between two coats of ardex na to bring up 14mm.?
     
  13. Lee bond

    Lee bond Well-Known Member

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    Is there anything else I can use on top of ardex na after been primered. I was thinking of mapei 1210 or renovation
     
  14. merit

    merit Well-Known Member

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    No keep with NA


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  15. merit

    merit Well-Known Member

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    I would prime as long as the subfloor is dry


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  16. merit

    merit Well-Known Member

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    Or do one coat with aggregate


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  17. Lee bond

    Lee bond Well-Known Member

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    Hi. I've got a hump in my floor. What's the best course of action to get it to level it. I was going to get a concrete grinding disc for angle grinder or a carbide block
     
  18. merit

    merit Well-Known Member

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    Yep, get a decent Hoover too


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  19. Lee bond

    Lee bond Well-Known Member

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    I've found 8mm vinyl flooring I'd like to put down. It has a underlay attached. Would the sub floor have to be 100% level or could I use underlay for laminate flooring.
     
  20. Rugmunching

    Rugmunching Well-Known Member

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    What is the brand of this flooring you found because if its the one I'm thinking that's largely available is absolute dog bob. I'll see if I can dig out the name of it. Even with a flat surface it comes apart :rolleyes:
     

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