Barrier-coat on used boat???

J

John12

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How can I or a surveyor confirm, a barrier-coat(Interlux 2000E) was applied?
Then painted over with VC-17 bottom paint.
According to the owner, this was tree years ago.
 
You'd have to sand or chip away some of the paint.
 
...while he is surveying the boat in a non-destructive manner...
 
Owner lost receipts?

after paint is removed, how can I confirm, there are actually 4-5 coats applied; ( as recommended by the manufacturer to achieve proper mil. thickness)
 
A surveyor should be able to tell you if there's a barrier coat. As far as thickness, some things require faith. Have you found anything else where the seller has mislead you?
 
You can't confirm the # of coats. There has to be a certain amount of trust here.
 
I could tell you by performing an ultrasonic measurement. Ask your surveyor if he has an ultrasonic meter.
 
One other way you may be able to tell is to look closely at the paint job. VC-17 is a very thin paint which does not build up and require sanding so what you see as texture on the paint is pretty much a mirror image of what is below. Although the barrier coat requires some roughing up prior to painting, you should still see somewhat of a textured look to the surface left by a roller or brush. The VC will be nice and smooth but you can see the difference between that stuff on gelcoat and on barrier coat which will most likely be rougher. Also, you can take a dab of acetone and rub a tiny spot of that VC off in a second to see what is below. Then touch up with like paint.
 
depth of material to the hull. I don't think you'd be able to distinguidh coats of bottom paint from coats of barrier coat.
 
An Ultrasonic meter measures thickness with in thousands of an inch. It will not tell you the exact number of coats of each paint. It will tell you exactly how thick of a coating there is on the bottom.
 
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