Karndean "luxury" vinyl planks... Nothing luxury about them.

Discussion in 'Vinyl / Impervious floor coverings' started by mike84, Mar 13, 2020.

  1. mike84

    mike84 Member

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    We selected these planks on the recommendation of the flooring company our builder used.

    The builder put down a plywood sub-floor between the new concrete slab and the vinyl flooring.

    Soon after moving in we noticed gaps between the planks forming everywhere. Installers have been and gone many times, trying to glue down the planks again. Eventually Karndean sent a rep out and they took a plank away for testing.

    After much time they went ahead and replaced all of the flooring. They acclimatised the planks for 48 hours then installed again. The install looked like the brochure, all the planks butted together nicely... but not for long.

    The gaps are happening again, all over the place as per attached photos, and what once looked like a nice install looks terrible again.

    Is this likely a problem with the planks?

    Could it be a problem with the sub floor shrinking or expanding? I've measured the planks where the gaps are and they seem to be the correct length.

    Very frustraing, and of course between the builder, the installer and the manufacturer no-one will take responsibility or be honest about what they think is causing it.
     

    Attached Files:

  2. Paul webb

    Paul webb Well-Known Member

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    Do all the skirting boards have gaps under them?
     
  3. Paul webb

    Paul webb Well-Known Member

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    What adhesive was used?
     
  4. mike84

    mike84 Member

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    Yes all the skirting boards have gaps underneath them, then they put a seal of some sort of filler around them. That has all been trashed when they ripped the planks out and reinstalled them, so the skirting boards are in a sorry state right now.

    I am not sure of what adhesive has been used exactly. Originally they were talking about pressure sensitive adhesive used in some places, the second installation they did they applied adhesive pretty much everywhere to ensure the planks were stuck down to the sub-floor.
     
  5. mike84

    mike84 Member

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    Here's a few more pics for context as to how easy these gaps are to see from normal standing height, and some other close ups.
     

    Attached Files:

  6. mike84

    mike84 Member

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    The other pics:
     

    Attached Files:

  7. Paul webb

    Paul webb Well-Known Member

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    So you have plywood glued to the new concrete slab?
     
  8. Paul webb

    Paul webb Well-Known Member

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    Was a moisture test carried out on the concrete before the plywood went down? Has anyone tested the moisture content of the plywood since you first noticed the problem?
     
  9. Paul webb

    Paul webb Well-Known Member

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    Just a theory, i could be wrong, but possibly plywood laid on a damp concrete slab, the moisture causes the plywood to expand into the gap under the skirting boards, taking the karndean with it
     
  10. mike84

    mike84 Member

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    Yes, the plywood is either glued or pinned to the slab in some way, not sure what they did.

    Is this moisture problem with plywood subfloors a common thing?

    Assuming I wanted some independent advice, who would be the right person to get out and run these tests? I figure asking an unrelated flooring company to take a look might not work as they may not be interested unless they have the chance to sell a job.

    Thanks for your support with this too by the way, much appreciated!
     
  11. Paul webb

    Paul webb Well-Known Member

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    Plywood onto concrete isn't a common thing, the majority of subfloors are usually all timber construction or all solid, so when the fitters walked in and saw a plywood floor, damp issues probably wouldn't have crossed their mind. You could try karndean again, an independent inspector would be ideal, but would be expensive, if i am right about the problem, then really that's down to the builder.
    I could be wrong, others on here might have other suggestions
     
  12. Rugmunching

    Rugmunching Well-Known Member

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    Your plywood is ine of your problems!
    What was the reason for putting ply over the concrete floor?

    I'm surprised karndean hasn't raised that? (if they havnt already)

    You mentioned in one of your posts that they were going to use pressure sensitive in 'some' places...we talking about with the ply fixing or the actual karndean?

    ....and when you mentioned they applied glue to pretty much everywhere to make sure the planks were stuck down then am I wrong in assuming you mean before they ripped it all out the planks were NOT all stuck??
     
  13. merit

    merit Well-Known Member

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    Please tell me the builder didn’t install the flooring


    Sent from my iPhone using Tapatalk
     
  14. Rugmunching

    Rugmunching Well-Known Member

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    ...sounds like they lose laid it in places :eek:
     
  15. Spacey

    Spacey Super Moderator Staff Member

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    Wrong Adhesive Wrong prep Wrong installer
     
  16. Distinctive Adam

    Distinctive Adam Well-Known Member

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    Firstly was it flooring grade ply ? Secondly was a damp test carried out ? Thirdly how the hell did the karndean rep miss all the obvious signs of a badly prepped floor.
     

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