Karndean Cupping

Discussion in 'Vinyl / Impervious floor coverings' started by Em Woodcock, Nov 14, 2023.

  1. Em Woodcock

    Em Woodcock Member

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    Hi!

    We had Karndean laid on Friday. We were really happy with the result but noticed after about a day that some of the planks started to bow and there is a hollow sound when you tap in it. We have a few major concerns with how the installation was done and I was wondering if anyone could let me know what remedial work should be done to fix it.

    Firstly the latex was left to dry for less than 24 hours. Whilst it was drying out underfloor heating suddenly came on (for likely less than 15mins). We have central heating pipes which run under the floor- does this mean we need epoxy adhesive?

    any help would be really appreciated as we are now left with flooring we have paid a load of money for that is not going to last.
     
  2. Yiddo1982

    Yiddo1982 Well-Known Member

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    Most can be laid on in under 24hrs nowadays

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  3. Em Woodcock

    Em Woodcock Member

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    Also it was laid over Marley tiles which were cracked etc.
     
  4. Yiddo1982

    Yiddo1982 Well-Known Member

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    What latex was used. How come they never removed the tiles

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  5. Em Woodcock

    Em Woodcock Member

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    Do you have any suggestions on how we can fix the issues we are having? Or does it need to be redone entirely?
     
  6. Em Woodcock

    Em Woodcock Member

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    I know it was a water based one that’s all I know, we were told they could not be removed due to potential asbestos in them.
     
  7. Yiddo1982

    Yiddo1982 Well-Known Member

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    I personally wouldnt use a water based screed over marley tiles and the tiles can be removed if done properly

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  8. Em Woodcock

    Em Woodcock Member

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    Does it need to be totally relayed then?
     
  9. Rugmunching

    Rugmunching Well-Known Member

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    By sounds of it, it all needs coming up and start again from scratch. Sounds like the screed has blown, no fix for that other than the above
     
  10. dazlight

    dazlight Super Moderator

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    What’s the sub floor ? So you have pipe UFH ?
     
  11. Em Woodcock

    Em Woodcock Member

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    We have a concrete subfloor and pipe UFH in the extension as well as central heating pipes which run under the concrete in the section of the house with radiators
     
  12. dazlight

    dazlight Super Moderator

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    How long has the concrete been down. Was it moisture tested and if so how.
     
  13. Paul webb

    Paul webb Well-Known Member

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    Is the problem on both the new and old part?
     

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