advice needed to make screeded floor flatter

Discussion in 'Subfloor Preparation' started by gavin, Jul 16, 2017.

  1. gavin

    gavin New Member

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    Hi all

    I recently had a tiler attempt a levelling of my floor using Mapei self leveller. The original floor was chipboard. The tiller screwed a 6mm plywood layer on top of that and then added the self-leveller onto that. Then it was left to dry for 24 hours.

    I checked it the next day and the flatness is not good. There are variations of around 4mm over 1m distance. You can see the 3 areas where the tiler has poured the screed due to the patterns on the floor. I'm unsure if that means anything or not, but the central of the 3 pours seems to correspond to the higher area and is a slightly darker colour than the other 2 areas.

    My question is really, is there any scope to getting in a second flooring expert/tiler and adding more self-leveller on top with the hope of getting it much flatter?

    I noted the way the tiler performed the work and believe, from research online, that there were only really the following areas where we might have got a flatter result.

    · My tiler mixed the water and the mapei compound for around 3 mins and only for that one time.

    · There was around 10 minutes before the compound started to pour the first time from the time the mixing was finished.

    · There may have been 20 minutes from end of mixing time to the last of the 3 pours onto the ground by the tiler.

    Anyone have any ideas, thanks for reading?

    G
     
  2. Spacey

    Spacey Super Moderator Staff Member

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    Did he use a primer and what compound was it exactly ?
     
  3. Rugmunching

    Rugmunching Well-Known Member

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    Jesus christ Gavin, did you literally stamd over him with a stop watch :eek:
    No wonder your floors all over the place, you probably scared the poor bloke lol
     
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  4. Rugmunching

    Rugmunching Well-Known Member

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  5. pf flooring

    pf flooring Well-Known Member

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    get a lvt fitter to come give it another coat but will need to go double deep, and leave him to do it, if i had somebody standing over me doing the work id pack up the tools and leave it personally, those are the types of customer you can do without and cause you nothing but grief
     
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  6. gavin

    gavin New Member

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    Hi guys, many thanks for the replies so far.

    Just to clarify: I was trying to get the floor very flat to help a spine condition rather than for the look of the thing
    so I have much more riding on it than a regular customer who simply wants a nice floor.

    @pf flooring - I actually was in a different room and didn't see what he was doing. The only reason I
    know the rough times things took is that I had researched the self-levelling process and was aware
    from things both diy'ers and professionals had suggested on forums what 'might' cause a self levelling screed
    to not be flat. My hope in posting at this point on this forum was to see if there is any consensus from
    other tilers/floor experts on the situation.

    @:Rugmunching - aha, no as I say I was in a different room on a laptop.

    @Spacey - I chatted to the tiler when he came to spec the work and he said then fibre added Mapei
    was what he would use. The surface area is only 6m square. As I mentioned to some other posters
    I can only presume that was what was used as deliberately was out of his hair during work.
     
  7. gavin

    gavin New Member

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    @Spacey - just add, no primer used.
     
  8. Spacey

    Spacey Super Moderator Staff Member

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    Probably won't be bonded then
     
  9. gavin

    gavin New Member

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