All_at_Sea
Well-Known Member
Does anyone have one or know where l can borrow one. I'm going out to Italy to look at a boat which is out of the water and want to take a meter with me. Anyone know if this is possible? I'm in Portsmouth.
Hiring/borrowing moisture meter
- Thread starter All_at_Sea
- Start date
coliholic
Well-Known Member
Google is your friend.
HSS hire them, £32 a week and there's bound to be a branch in Pompey.
http://www.hss.com/g/49420/Damp-Meter.html
HSS hire them, £32 a week and there's bound to be a branch in Pompey.
http://www.hss.com/g/49420/Damp-Meter.html
30boat
N/A
That's a masonry damp meter.You need a Tramex Skipper or a Sovereign.
maxi
Well-Known Member
Hi, I do have a proper moisture meter, but first can you let me know roughly when you need it and the duration?,-after all the meter does have to help me make a living.
My location; adjacent to J9 on M27. Handy eh?
My location; adjacent to J9 on M27. Handy eh?
Daydream believer
Well-Known Member
You may already know this so apologies if you do but
Be aware that a proper moisture meter will read down to 5% moisture content or less.
Damp meters of the type used to establish mc of walls do not do this
If you hire one it should come with a table of values. The meter reads off a scale but you need the sheet of values to establish the actual moisture content
If you do not have this you will only get relative values. Ie you can tell that a particular piece of wood reads x & one near it reads x+1 but neither readings tell you the moisture content, only that one has more content than another.
That only works for the same material. Different woods give different readings but may have same mc.
Moisture meters come in a number of types. You will want either penetrative or surface. Surface are easier to read but may misread on surface moisture. Penetrative makes holes in the test material
You also need to know what reading you want to achieve . You may come back knowing that something has 13% mc but not know of that is good or bad for that location
Be aware that a proper moisture meter will read down to 5% moisture content or less.
Damp meters of the type used to establish mc of walls do not do this
If you hire one it should come with a table of values. The meter reads off a scale but you need the sheet of values to establish the actual moisture content
If you do not have this you will only get relative values. Ie you can tell that a particular piece of wood reads x & one near it reads x+1 but neither readings tell you the moisture content, only that one has more content than another.
That only works for the same material. Different woods give different readings but may have same mc.
Moisture meters come in a number of types. You will want either penetrative or surface. Surface are easier to read but may misread on surface moisture. Penetrative makes holes in the test material
You also need to know what reading you want to achieve . You may come back knowing that something has 13% mc but not know of that is good or bad for that location
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VicS
Well-Known Member
Dont belong to a club that has one for members to use ??
This pdf , by Nigel Clegg, on using The Sovereign meter on GRP might be useful http://www.passionforpaint.co.uk/downloads/sovguide.pdf
This pdf , by Nigel Clegg, on using The Sovereign meter on GRP might be useful http://www.passionforpaint.co.uk/downloads/sovguide.pdf
pathfinderstu
Well-Known Member
I think there is a lot of bull**** attached to moisture reading, i know its a sign of osmossis but all healthy glassfibre boats soak up moisture and lots must depend on the fibre layup, how long the boat has been out of the water , weather conditions and so on. i bought a beneteau recently and did not bother as just hauled out of water the readings would have bound to be high, just relied on a good visual inspection. i may be wrong and am sure some of you surveyor chaps out there will have something to say.!
maxi
Well-Known Member
I agree with you that there is a lot of bull etc, but, it is NOT a sign of osmosis, the reading is quite simply an indication of the the degree of moisture present in the laminate. Many many boats present with a high moisture reading but have no discernable osmosis.
Osmosis is NOT the cause of laminate blistering, which is what I assume that you are suggesting. I would accept however, that it is the usual catalyst that facilitates the formation of blistering.
Additionally as stated by another subscriber, moisture meters do not read-out read out in percentage terms, so another misconception
maxi
Well-Known Member
I agree with you that there is a lot of bull etc, but, it is NOT a sign of osmosis, the reading is quite simply an indication of the the degree of moisture present in the laminate. Many many boats present with a high moisture reading but have no discernable osmosis.
Osmosis is NOT the cause of laminate blistering, which is what I assume that you are suggesting. I would accept however, that it is the usual catalyst that facilitates the formation of blistering.
Additionally as stated by another subscriber, moisture meters do not read-out read out in percentage terms, so another misconception
30boat
N/A
One thing I've learnt from my readings is that a high moisture reading doesn't necessarily results in blistering.A permeable, poor quality,gelcoat will allow water molecules out easily and osmotic pressure inside the laminate is not created.For blistering to happen a reasonably watertight but permeable at a molecular lever,gelcoat is needed.
bond003.5
New Member
Are you still hiring your moisture meter? If so I would be very interested
