Damp Problems!!!!

Discussion in 'Top Tips & Tricks' started by gazzeroo, Apr 12, 2015.

  1. gazzeroo

    gazzeroo Funster

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    Hi guys, once again looking for advice. I have just run a damp meter round my 20 year old MH. It`s in pretty good nick apart from a couple of places. The meter indicated 15/16% around the bottom left corner of the van in the wc. Also around the fan in the roof near the kitchen, but only on the rear edge. I have looked outside and can see where it is possibly letting in water. My question is, do I seal up the suspect areas now or wait til the meter level drops. The van stands outside all the time, but with the summer approaching, it might have a chance of drying out more. I don`t want to seal in the damp. Also any advise on what to seal it with, I have good quality silicone and Soudal classic. As always I would really appreciate your comments
    regards
    Gary
     
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  2. GJH

    GJH Funster Life Member

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    There were some minor spots of damp found in our van when it had its habitation service 15 months ago. We had it re-sealed ASAP afterwards and the problem was cured by it drying out over the summer.
     
  3. MikeD

    MikeD Funster

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    Our three year old Autotrail regularly had 12 -18% damp readings but was passed on its annual Hab check. This year 40% and a warranty claim. Booked in for May. Hopefully then ok
     
  4. pappajohn

    pappajohn Funster Life Member

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    Dont seal with silicon....no good outside.

    Sikaflex etc is best....doesnt become dry and brittle like most sealers
     
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  5. Jimbohorlicks

    Jimbohorlicks Funster

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    I would seal the areas you think need it with a good sealant and check again when the better weather comes along next week -i thought that 15% was ok -especially for a toilet area
     
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  6. oldflemo

    oldflemo Funster

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    On my Protimeter up to 15% is considered "dry". In my opinion you must recognise that given you're measuring the dampness on the inside and only on the surface( if a "prong" type meter is being used) you must assume that if the surface reading is that high behind the point tested may be higher and more worrying. I now have bought one of the so called "contact less" meters and they do measure up to 40mm deep and give more useful readings
     
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  7. gazzeroo

    gazzeroo Funster

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    Thanks chaps, for the replies, helpful as always. I will probably seal the affected areas and keep an eye on them
     
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  8. AlunJ

    AlunJ Read Only Funster

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    Hi any recommended examples of the contact less meters, and what % should raise concerns??
     
  9. oldflemo

    oldflemo Funster

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    TFA Dostmann HumidCheck Contact 30.5503 Material Moisture Measuring Device
    available on Amazon where I bought one for £59. Be careful I've seen the same one on sale for up to £80.

    Up to 15% is considered "dry" 15 to 22% considered requiring further checking 23% upward normally considered "wet"
    Expect immediately around window seals to be high as condensation always forms on the materials used to form the window opening . This is absolutely normal and of no real concern as long as it does not extend away from window opening at all
    Hope that assists you
    Ian



     
  10. big bertha

    big bertha Funster

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    Hab check done a couple of months ago and damp free but I bought a non invasive metre that was recommended here. We've been away for a few days came back Wednesday, went over areas with metre today and a couple of areas over 20%, the kitchen window frame area and just under roof and high wall area in lounge. It doesn't look or feel damp. East Lothian-20150417-00740.jpg could it be condensation build up.
     

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