I have had experience with Interprotect on 2 different boats. The first was a 1974 Viking 28. I stripped the bottom of this boat to gel coat when I bought it and did 5 coats of Interprotect. I also had the iron keel sand blasted and put Interprotect on the keel at the same time. I sold the boat 13 years later and the hull was in perfect condition with no peeling, crazing .... Also the keel never suffered from any rust through in 13 years. The trick is to get the first coat of Interprotect on the iron keel within a couple of hours of the sandblasting.
My current boat is a 29-2 bought in 2012. I am stripping the builtup ablative paint and have discovered that there is Interprotect barrier epoxy under all the paint. Interlux suggested that I apply another 2 coats of Interprotect over this to "freshen it up, replace any that I sand off and give the VC17 a fresh surface to bond to". I do not know when the Interprotect was done on this boat but based on the number of layers of bottom paint it was quite a few years ago. The bottom shows no signs of crazing or peeling of the Interprotect. My experience is that this is an excellent product and I strongly recommend it. By the way, the 29-2 was a salt water boat until I bought it and it is now a fresh water boat. The Viking 28 was a fresh water boat - Lake Ontario Best regards, Bob Hickson, P. Eng, RHI, CEA C&C 29-2 Flying Colours (416) 919-2297 <mailto:bobhick...@rogers.com> bobhick...@rogers.com ~~~~ __/) ~~~~
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