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Green Building Bible, Fourth Edition
Green Building Bible, fourth edition (both books)
These two books are the perfect starting place to help you get to grips with one of the most vitally important aspects of our society - our homes and living environment.

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General: Protimeter Recommendations?

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1 to 11 of 11

  1.  
  1.  
    Just looking for a basic kit, what's your recommendations?

    Plus maybe a hygrometer, infrared thermometer and a few other gadgets...
  2.  
    I have a floor slab which I'd like to measure the moisture content of

    I've been recommended a Protimeter MMS2 but looking at the price it seems prohibitive for my requirements. Or a separate Protimeter Surveymaster and Hygromaster which have been recommended by someone who does this day in day out...
    •  
      CommentAuthordjh
    • CommentTimeJan 24th 2020
     
    I've got a basic IR thermometer that seems to work well. I don't remember where I got it and there's no markings on it.

    I've got a basic moisture meter that says Premier Farnell on it. It too seems to work well. It's for measuring timber moisture levels, but I've used it to measure lime render with success. Obviously I have no idea what the actual moisture level in the render is, but I can find particularly damp patches (or at least I could when there were some).

    So I think it all depends on what you're trying to achieve. If, like me, you just want to know if some parts of some material are damper than other parts, or damper than some reference sample, then a basic meter is fine. If you want to be able to quote figures in reports, then you'll want calibration certificates and all kinds of things.
    • CommentAuthortony
    • CommentTimeJan 24th 2020
     
    I can tell you the moisture content if you drill a hole in it , collect the dust, seal in a snappy ziplock bag, post it to me.

    I will weigh it, dry it in an oven ay 120C, re weigh it and calculate the percentage moisture.

    All you need is a set of scales than can measure to 1 / 100g

    I dry some ali foil and use that to contain the samples.
  5.  
    Tony, what formula are you using to weigh/calculate?

    Can anyone recommend a concrete meter too? Tramex seen to get good reviews...
    • CommentAuthortony
    • CommentTimeJan 21st 2021
     
    ( I use weight when wet - weight when dry ) divided by weight when wet x100 = % moisture

    Probes measure electrical resistance not moisture
  7.  
    Yep, that's what calc. I've been using

    I'm struggling to get a floor screed following water ingress below 5% MC using weighing method.

    I'm using the method that 2.5% is dry for resilient flooring such as vinyl, laminate etc and 5% for carpet

    Wanted to check I was calculating correctly. Have been using aluminium pots to store the samples. They're bone dry....

    Not sure how long to keep drying for on this one before we retile....
    • CommentAuthortony
    • CommentTimeJan 21st 2021
     
    With cementacious adhesive and grout it will continue to dry out to equilibrium levels and rise slightly as both contain water and will themselves take a while to dry, for wood floors I recommend a month per inch of concrete and screed before laying

    You can drill concrete and weigh the dust dry and Reweigh
  9.  
    So will a tiled floor over screed dry if the screed is wet?

    The bigger drying companies always seem to take up all the tiles with no hesitation. Then dry the screed etc. Then retile.

    We've tried on this job to remove one or two tiles, then dry within that 'breathe hole'. But struggling to get to below 5% MC

    I still need a tramex or similar to indicate the wettest pay of the floors without drilling holes everywhere...
  10.  
    I hired a Protimeter SurveyMaster a few months ago and used the non invasive method to check for damp in stone walls. I calibrated it using an area of known dry construction and was then able to measure damp levels behind tiled walls and plasterwork.

    https://www.protimeter.com/surveymaster.html
    •  
      CommentAuthordjh
    • CommentTimeJan 22nd 2021
     
    Posted By: VictorianecoSo will a tiled floor over screed dry if the screed is wet?

    The bigger drying companies always seem to take up all the tiles with no hesitation. Then dry the screed etc. Then reticle

    We've tried on this job to remove one or two tiles, then dry within that 'breathe hole'. But struggling to get to below 5% MC

    Presumably if Tony says it needs a month per inch then you might be able to work out how many months it will take by measuring the distance between your breathing holes in inches and dividing by two.

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