Damp test.

Discussion in 'Subfloor Preparation' started by adamg, Jul 21, 2020.

  1. adamg

    adamg Member

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    What method do you use to test moisture in solid floors?
    I have always used a hygrometer left to record over 24 hours. Maybe i am a bit set in my ways but it is something i have always trusted.
     
  2. Neilydun

    Neilydun Well-Known Member

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    I think its supposed to be a bit longer...
     
  3. Samson

    Samson Well-Known Member

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    We use a hygrometer, but you are meant to take daily readings over 3 consecutive days after fixing it to the floor (72 hours minimum) according to Karndean and Amtico.

    24 hours will not give a satisfactory test and will produce a low reading usually.
     
  4. Spacey

    Spacey Super Moderator Staff Member

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    Drill and plug (obviously if there's no pipes) you get an accurate reading in about an hour but Strictly speaking its should be read after 72 hours Same with a box then you take daily readings until the results stabilise
     
  5. Rugmunching

    Rugmunching Well-Known Member

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    So potentially weeks spacey?
    Noooo way am I leaving my bath sponge tamagotchi for that long...
    Ive had to rescue the poor thing put of a kitchen bin before :(
     
  6. Rugmunching

    Rugmunching Well-Known Member

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  7. adamg

    adamg Member

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    Thanks for the advice.
    I was asking as a company i contract to expect me to turn up and do a damp test in 5 minutes and get an answer!
     
  8. merit

    merit Well-Known Member

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    How many days do you think you should spend damp testing floors for free?


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  9. tarkett85

    tarkett85 Well-Known Member

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    None it’s always chargeable, you get a quick mc reading for free a proper Rh% test is £30 a day.


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  10. merit

    merit Well-Known Member

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    So what happens when the reading isn’t equilibrium. Do you go back and charge again?


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  11. Neilydun

    Neilydun Well-Known Member

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    Ive never charged for a damp test.
    I suppose its different with commercial.
    If the jobs not close, I just get the screed manufacturer to carry out a test for me.
     
  12. tarkett85

    tarkett85 Well-Known Member

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    Funny enough I’ve never had that issue, but no in that case I wouldn’t. And I knock it off the price of the job so it’s not free up front but it becomes so if I get the job.


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  13. tarkett85

    tarkett85 Well-Known Member

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    I knock the cost off the job price, but I charge up front that way I’m not losing money on 3 trips to and from a job I might not get but I hand over the readings if they ask for them.


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