How long before...

Discussion in 'Subfloor Preparation' started by Rugmunching, Jul 8, 2020.

  1. Rugmunching

    Rugmunching Well-Known Member

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    ...you would Ardex dpm 1c a new sand & cement (with fibres) subfloor?

    Ive always gave them atleast 3 to 4 weeks but know some subbies that wait only a week.
    Got the job but if I can get on it sooner depending on a couple of other delayed jobs then I could possibly crack on with it within 8 days of the fresh lay.
     
  2. merit

    merit Well-Known Member

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    Depends how long that screed takes to cure. Surely if it’s still curing it can still crack. Then your dpms done for


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  3. merit

    merit Well-Known Member

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    Needs to read below 92%rh


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  4. Rugmunching

    Rugmunching Well-Known Member

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    Yeah hence why I usually leave it a few weeks atleast, customers are too hungry after this lockdown :rolleyes: doing my nut right in...
     
  5. Rugmunching

    Rugmunching Well-Known Member

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    Ardex pdf is saying 98%
     
  6. Distinctive Adam

    Distinctive Adam Well-Known Member

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    Silane dpm and crack on
     
  7. Spacey

    Spacey Super Moderator Staff Member

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    Give it 30 days from it being laid for it to cure and harden Then you can DPM
     
  8. Floorever

    Floorever Well-Known Member

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    Agree. Leave for 4 weeks to allow to cure and allow for shrinkage
     
  9. merit

    merit Well-Known Member

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    98% is fir old slabs 92% on new residual moisture


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