Dpm gypsum

Discussion in 'Subfloor Preparation' started by Andrew70, Mar 15, 2014.

  1. Andrew70

    Andrew70 Well-Known Member

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    Is there a dpm to go onto gypsum screed spoke to balls and they don't do one
     
    Andrew70, Mar 15, 2014
    #1
  2. coolevilangel

    coolevilangel Well-Known Member

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    far as i know there isnt one, gypsum chemically 'cures' out, unlike the std s/c where the moisture leaves etc
    Would be great to have one tho
     
    coolevilangel, Mar 15, 2014
    #2
  3. sheene 67

    sheene 67 New Member

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    Jdjdbdbdbdbd
     
    Last edited by a moderator: Mar 15, 2014
    sheene 67, Mar 15, 2014
    #3
  4. sheene 67

    sheene 67 New Member

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    Ardex DPM1C-moisture readings less than 85%rh (Hygrometer Box) you're good to go, assuming the Anhydrite has been prepared properly.

    All sub-floors chemically cure (including cement/sand screeds) hydration of water is a chemical process. Anhydrite and cement/sand screeds dry at a similar rate (50mm thick) at approx 1mm a day in good conditions (20oC and 65% air rh)
     
    sheene 67, Mar 15, 2014
    #4
  5. Andrew70

    Andrew70 Well-Known Member

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    Cheers for that will speak to ardex on monday
     
    Andrew70, Mar 15, 2014
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  6. sheene 67

    sheene 67 New Member

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    No problem, remember tho 85% or below
     
    sheene 67, Mar 15, 2014
    #6
  7. Matt

    Matt Well-Known Member Staff Member

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    Lecol do a dpm also.
     
    Matt, Mar 16, 2014
    #7

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