Call for "Osmotic " blister war stories

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Jim WIllis

My previous posting on 8/27/01 whent into "limboland" for a few days. I am no preparing a permanent posting about gelcoat blisters. I need feedback from people who have done blister jobs and then seen the results of the repair on the next ahul out. i.e. reality instead of theory Input is greatefully acknowledged. Thanks Jim Willis Jim
 
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Ed Schenck

One experience.

Two Springs ago I decided to see what was under several years of bottompaint on my 37-footer. I used a wide and sharp paint scraper to get off the bulk of it. Then an orbital sander with vacuum. After nearly twenty years, all in fresh water, there were less than 50 blisters. Most were the size of a pencil eraser, maybe 10 were dime size. I dremmeled these out, let them alone for a few days to check for moisture, found none and covered with West epoxy. The important next step was five coats of Interlux 2000E, a barrier coat. Then three coats of Trinidad SR. When we pulled her last Fall it looked new(after the power wash). I expect to sail this boat for at least 10 more years and never do anything more than put on a coat of anti-fouling each Spring.
 
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Craig Cody

Still at war

Check out the archives for the article I wrote on July 12 of this year. It is entitled "Blisters on My Bottom". I had a gelcoat strip and application of a product that 3-M has since recalled as being unsuitable. The short version is, I have now contacted 3-M's corporate HQ asking what they are going to do, but have not heard a word in response. I have a feeling I will have to file suit.
 
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Jim WIllis

I asked before - what is the 3M product?

Was it vinyl ester? Because I used some on my patches over 3 years ago and the boat is due (everdue!) to be hauled again. Vinyl ester is not as water-resistant as epoxy resin (see Trilogy II). I want to incorporate all of this into Trilogy II "Blisters on her Bottom" Thanks Jim Willis
 
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Craig Cody

Not sure what product

Jim, I'm not certain exactly what the 3M product was, but I will be finding out soon. The diver who cleans the bottom of the boat said that several blisters have formed, and that when he pushes on them or scrapes them, they break. This is exactly what I was told would happen and have seen on some boats that had the same product applied. I have now decided to bypass Frank Butler, his boatyard and the local 3M rep. I've written to the CEO of 3M asking for resolution to my problem. I'm tired of Frank and his boatyard and the 3M rep pointing fingers at each other and saying it is the other guys fault. I've even heard from Frank that maybe the broker who sold me the boat should be responsible for paying, since he is the one who wrote me the letter stating that the bottom job would have a warranty. All I want is for someone to take some sort of responsibility for this and get my boat fixed, but it doesn't look like that is going to happen. If the CEO of 3M doesn't offer some sort of solution to my problem, I will have to retain a lawyer and file suit. I don't want to have to do that. Bottom line is...if Catalina had spent just a bit more time and money and been more careful in the manufacture of my boat, and many other boats, this thread wouldn't even be happening.
 
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Doug T.

Getting ready...

My friend bought a 77 Hunter 27 with about 20 zillion dime-
 
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