Wet screed causing lifting LVT - HELP

Discussion in 'Subfloor Preparation' started by Sam Cordery, Mar 9, 2020.

  1. Neilydun

    Neilydun Well-Known Member

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    I never use a gypsum based compound. So long as its dry, ground off properly and primed correctly its fine to use pretty much anything.
     
  2. merit

    merit Well-Known Member

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    True


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  3. merit

    merit Well-Known Member

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    But you really have to do it right to use a cement based product. Most fitters wouldn’t do it correctly


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  4. Neilydun

    Neilydun Well-Known Member

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    To be honest, having done a lot of new build, its much harder to mess it up than you think.
    Ive been with plenty of fitters who don`t grind the floor, just one pissy coat of 121 and then green bag (or whatever gets sent) over it.
    Literally 100`s and 100`s of them, all on a 24 month retention, and probably less than 1 in 100 have any sort of snags or remidials over that 2 year period.
     
  5. merit

    merit Well-Known Member

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    We use to put Na and epoxy resin over them and had no problems lol. Never grind them. Have seen 2 or 3 blow using 131 and 1200. When lvt and ufh is in. And heard of loads going wrong


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  6. Spacey

    Spacey Super Moderator Staff Member

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    I've done them With normal SLC isolated with primer and never had an issue but I feel better if I use Calcium sulphate based
    Always fully grind though and check its dry
     
  7. Sam Cordery

    Sam Cordery Member

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    Hi all,
    Just wanted to let you know that the floor contractor has agreed to a full refund for us to go elsewhere and start again. Appreciate your help on this guys
     
  8. Rugmunching

    Rugmunching Well-Known Member

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    Bare in mind the next lot will charge you for full rip out and dispose if you not doing it yourself. Pig of a job... Screenshot_20200317-131051_Gallery.jpg
     

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