Karndean uneven floor height (help)

Discussion in 'Subfloor Preparation' started by Mani Gill, Jan 3, 2018.

  1. Mani Gill

    Mani Gill Active Member

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    Will get them added as soon as each time I try it States photo is too large. I’ll put my plans up initially and hopefully it makes a little more sense. I can’t go into the screeded room until Sat apparently.
     
  2. Mani Gill

    Mani Gill Active Member

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    Hi,

    I’ve managed to attach a photo. The extended area is the lounge extension with a wall knocked through from the existing lounge. That area is level.

    This then goes onto the rear dining room. These three rooms have had self levelling Cemfloor screed at 90m2.

    The hallway and kitchen and existing dining area is the area that slopes from front to back. Therefore from the new dining area into the breakfast area is a 30mm height difference. New area being higher. The door is actually to the back of the room towards the garden rather than middle as shown.
     

    Attached Files:

  3. Rugmunching

    Rugmunching Well-Known Member

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    Can you post up pics of the actual floor once you can walk on it aswell.
     
  4. Mani Gill

    Mani Gill Active Member

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    I certainly will do, I’ll get the pic up on Sunday.
     
  5. Dave Hearn

    Dave Hearn Active Member

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    So am I right in thinking we have to ramp down from new dining area at rear of lounge to the left into breakfast area?
     
  6. Mani Gill

    Mani Gill Active Member

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    Yes that is correct.

    I have spoken to a Karndean fitter he advises that the slope is not an issue and in the step he can place a transition strip.

    My builder said another option is to create a ramp using screed. Currently there is gap because it was an outside cavity wall. The breakfast area currently has carpet and the kitchen is tiled. My builder will remove the carpet and tiles and tells me there is a concrete screed underneath. Fingers crossed it is smooth.
     
  7. Spacey

    Spacey Super Moderator Staff Member

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    And dry
    But it will still need a smoothing compound regardless


    If you where my customer Id say don’t worry about it I will sort it out so there’s no step
    It may still slope but nothing noticeable and won’t cost the earth.
    30mm isn’t a lot over the space of two rooms
    It’s 3cm
    Flat and smooth is the important thing
    Level is nice but not always possible especially when builders are involved in floor levels or floors full stop
     
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  8. Mani Gill

    Mani Gill Active Member

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    Thank you.
     
  9. Mani Gill

    Mani Gill Active Member

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    I have managed to get some pictures from the front of the house hall to lounge which is meant to be level. It is too dark in the new dining area at present, there is a ply board in place in the door section.

    There is still a small gap in the old and new, my builder asvises we can clean up the edges with self levelling compound.
     

    Attached Files:

  10. Mani Gill

    Mani Gill Active Member

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    Some more images of the front. A slight height difference of 7mm from lounge area to hallway.

    There also seems to be some cracks appearing, the builder advises me that this are only surface cracks. They did frighten me a great deal.
     

    Attached Files:

  11. Mani Gill

    Mani Gill Active Member

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    And finally the new dining room into the kitchen breakfast area.

    This is the 30mm height difference.

    I hope the pictures make it appear a lot clearer. Thank you all again.
     

    Attached Files:

  12. Mani Gill

    Mani Gill Active Member

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    And some images of what I am hoping are only surface cracks.
     

    Attached Files:

  13. Rugmunching

    Rugmunching Well-Known Member

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    Ive had plenty like this, some even worse! Did a 450m2 job split into several rooms with the gap all the way round, bits broken out here and there and it took me day and half to fill the lot up before I even got my screed buckets out.

    The ballache there is filling up the whole perimeter with the right compound before the screed but that slope will be a doddle for the right guy.
    Those bricks needs taking out and filling up properly which your floorlayer can sort out (extra costs maybe)

    You sure that isnt gypsum??
     
  14. Rugmunching

    Rugmunching Well-Known Member

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    Also has your fitter gone through a rough plan of action with you?
    Im assuming he knows he has to leave the fresh slab for a while before he can do his thing inless you are having a dpm system?

    You researched the fitter?

    Only asking as its a lot of work and straight forward for the professional but seen too many wannabees claiming to be top fitters and go in and fcuk it even more resulting in a broke customer with a shite floor ready to hang themselves o_O
     
  15. Mani Gill

    Mani Gill Active Member

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    Good evening,

    Yes definitely not gypsum, it is Cemfloor which is a cement based screed. I am hoping those small cracks in the corner by the door are hairline cracks on the surface only. Seems to be okay when I’ve rubbed off the sandy area with my hand.

    It will take 28 days to dry. I’ve been told I can start running the underfloor heating 10 days from install and turn the heat up 1 degree at a time.

    Who would have thought were so many variables.
     
  16. Mani Gill

    Mani Gill Active Member

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    I am at that stage already

    The fitter is well experienced with Karndean and I used him a few years ago for tiling and he was very good. I’ve seem Amtico and Karndean that he has laid.

    He has asked if the area is being sanded as he seems to think it will or at worse a skim level.

    He will pop over next week to have a look. I’m sure he knows how to sort it.

    My builder states he can fill the gaps in with self levelling compound. I’ll lay off doing anything until the fitter has a look.

    Thank you.
     
  17. Rugmunching

    Rugmunching Well-Known Member

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    Thats good, atleast you know the fitter and seen his work so thats a good start.

    Is he not sanding it down with a machine then? If he isnt then who is?
    And what do you mean skim level - does he want your builder to put another coat on it?

    Find out what exact compound the builder is filling these edges up with and tell your fitter just incase its a compound that will interfere with the his prep.

    Have you tapped these hairline cracks? Sound hollow?
     
  18. Rugmunching

    Rugmunching Well-Known Member

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    Also them 28days dont always go to plan, make sure your fitter takes a moisture test before he even cracks on with his prep plan.
     
  19. Rugmunching

    Rugmunching Well-Known Member

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    ....and you should have ripped your skirting off and put new on, old battered mucky skirts with 6 layers of paint covering the mess from the builders cement with new floor is one of my hates :eek:
     
  20. Mani Gill

    Mani Gill Active Member

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    I know.

    My fitter was asking if the builders were sanding it and they will not, I think he will but he said he normally does not.

    They don’t sound hollow or I don’t think they do, it’s sounds pretty similar all throughout.
     

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