Damp testing to BS

Discussion in 'Subfloor Preparation' started by Simon Grimley, Jun 20, 2020.

  1. Simon Grimley

    Simon Grimley Well-Known Member

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    Hi guys,

    I need some advice. At the moment I only fit carpets so use an indicative damp meter just to make sure there’s no major issues.

    I want to get something that confirms to BS. From memory that has to be a meter that is either left in place for 72+ hours or you drill and probe?

    Am I right? What meters are good to make sure I’m testing correctly for fitting wood/lvt, etc
     
  2. Spacey

    Spacey Super Moderator Staff Member

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    Protimeter MMS
     
  3. Yiddo1982

    Yiddo1982 Well-Known Member

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    How accurate is this. Has anyone used one[​IMG]

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  4. merit

    merit Well-Known Member

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    I use it all the time. Very handy bit of kit but it has its limits


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  5. Yiddo1982

    Yiddo1982 Well-Known Member

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    So it will give you a reasonably good result on checking a screened floor for moisture rather than having to drill a probe or putting a box down

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  6. Spacey

    Spacey Super Moderator Staff Member

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    It should do but it doesnt conform to BS
     
  7. mjfl

    mjfl Well-Known Member

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  8. merit

    merit Well-Known Member

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    Well I’ve found loads of dodgey sections in subfloors with it. Very good for hidden old exterior walls where the builder has gone over and taken out the dpc and not used a dpm. Will tell you when old floors are damp. I did have a strange reading the other day. New liquid screed was reading dry with the Wolff meter as it had been baked in the hot weather. When I drilled and probed it the reading was in the 90s. I’ve found a dry levelling compound can give a false dry reading. Basically you want to chip off the top surface before you scan something.
    Also has a wood option. Not as accurate as a pin meter but does give a indicator



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  9. tarkett85

    tarkett85 Well-Known Member

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    Use as an indicator on where to drill don’t use them for accurate readings.


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