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Testing For Damp?


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#1 paulliver

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Posted 30 May 2013 - 08:19 PM

When testing for damp why do they stick the two prongs through the wall.
They tested my parents swift challanger and left 3 testing holes up the back of the toilet found 18%
Thanks paul

#2 MonkeyMark

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Posted 30 May 2013 - 08:32 PM

The prongs go in to detect the water %.

They usually do it somewhere out of sight.

Wood naturally contains moisture, anything under 20% is fine.



#3 paulliver

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Posted 30 May 2013 - 08:42 PM

Thanks for the reply.
Would of thought out of sight would be better?.
Will let my parents know that anything under 20% is fine for this rubbish summer we are having.
Cheers paul

#4 Rita

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Posted 30 May 2013 - 08:55 PM

I can see where they  damp test mine as well  sooner see the holes   and know its been done 



#5 Caravanmedicswindon

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Posted 30 May 2013 - 09:00 PM

I would have thought most service centres would be using a non invasive tester, I certainly do.

#6 Guest_Beagler_*

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Posted 30 May 2013 - 09:03 PM

I would have thought most service centres would be using a non invasive tester, I certainly do.


Can I ask how they work and what make?

#7 Rita

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Posted 30 May 2013 - 09:11 PM

this looks like it 

 

http://www.damp-mete...tm#.UafAPEDVCSo



#8 Caravanmedicswindon

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Posted 30 May 2013 - 09:22 PM

That's it Rita.

#9 Guest_Beagler_*

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Posted 30 May 2013 - 09:24 PM

Thanks

#10 grasmere59

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Posted 30 May 2013 - 10:06 PM

I managed to get Protimeter Surveymaster secondhand at a good price and that has the pins or you can use it for non invasive readings it also comes with and extended prong lead to get into the hard to get places.



#11 xtrailman

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Posted 31 May 2013 - 07:01 AM

I managed to get Protimeter Surveymaster secondhand at a good price and that has the pins or you can use it for non invasive readings it also comes with and extended prong lead to get into the hard to get places.

I wish I had one like that, but bought a new protimeter mini, which I'm happy with. Not that theirs anything wrong with my old 3 led cheap tester I've had twenty years.

 

Do you find the none invasive readings as accurate as using the extended lead?


Edited by xtrailman, 31 May 2013 - 07:03 AM.


#12 Caravanmedicswindon

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Posted 31 May 2013 - 07:25 AM

I use the Aquant for ease of use and surveying larger areas (to establish extent of damp) & behind shower walls, enclosures and trays. It is probably a lot more accurate than the mini and it is not affected by condensation or surface moisture. I still use the mini to establish percentage readings in problem areas, the mini is sometimes easier to use along the back wall under a fixed bed or with the extension in top front corners.

#13 xtrailman

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Posted 31 May 2013 - 07:45 AM

I use the Aquant for ease of use and surveying larger areas (to establish extent of damp) & behind shower walls, enclosures and trays. It is probably a lot more accurate than the mini and it is not affected by condensation or surface moisture. I still use the mini to establish percentage readings in problem areas, the mini is sometimes easier to use along the back wall under a fixed bed or with the extension in top front corners.


Are you saying the Aquant does not give % readings?

I only bought the mini because I needed the % readings in case I had to convince my dealer there was a problem. And my old meter was difficult to use in the far corner of the wet lockers.


Edited by xtrailman, 31 May 2013 - 07:46 AM.


#14 grasmere59

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Posted 31 May 2013 - 06:25 PM

I wish I had one like that, but bought a new protimeter mini, which I'm happy with. Not that theirs anything wrong with my old 3 led cheap tester I've had twenty years.

 

Do you find the none invasive readings as accurate as using the extended lead?

The non evasive method doesn't show a % reading.When using the extended lead a funny thing happens,as soon as you plug it in it registers 6% to start but when you take a reading and you get,lets say 15% it tallys exactly with a direct prong reading,i've checked the calibration on the extended lead and the direct prongs and it's spot on.



#15 Guest_Beagler_*

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Posted 31 May 2013 - 07:25 PM

Reading about so many vans suffering damp has made me a bit worried so I took the plunge and ordered the Aquant - hope I dont find any.

#16 harry.m1byt

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Posted 31 May 2013 - 10:28 PM

Reading about so many vans suffering damp has made me a bit worried so I took the plunge and ordered the Aquant - hope I dont find any.

 

Be aware that the rubber seals around windows and similar are conductive, so they need to be lifted clear of the probes or it will show damp.



#17 Caravanmedicswindon

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Posted 01 June 2013 - 05:35 AM

Not a concern with the Aquant as you measure below.

#18 Guest_Beagler_*

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Posted 01 June 2013 - 08:11 AM

Not a concern with the Aquant as you measure below.


Can you test from the outside in up against the caravan skin??




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