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Old 09-25-2016, 08:19 AM   #1
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Hull blisters worse on some model years?

Hi,
The bottom is getting a full job to remove a bunch of blisters on an 83 KK42, the company doing the work told me because everything was stripped down to the glass (not to the core btw) and re-epoxied followed by traditional bottom treatment I shouldn't have any blister issues again, the whole job is a 3 month ordeal.

My concern is that im not convinced the blisters are coming from water penetration versus an issue with the resin used on the KK42. Does anyone have any experience or thoughts? Do these types of repair jobs really last or is the only option to strip the outer glass to the core and reglass?

I'm new to cored hulls so any advice is appreciated.
Thank you,
Arthur
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Old 09-25-2016, 09:04 AM   #2
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Ask for a written guarantee.
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Old 09-25-2016, 09:15 AM   #3
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I'll have that, just was curious if owners had seen differences in model year? Especially with how many different builders/processes were used to build these over the 20 years.
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Old 09-25-2016, 09:20 AM   #4
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Ask for a written guarantee.

It is only my opinion, but I highly doubt any boat yard would give you one. There are just too many variables that could leave them exposed to liability.

Like any bottom job and bottoms, they are going to always be hit or miss. I don't think anyone could (or should) make general statements regarding this model or a certain construction technique being more susceptible to blisters or not.

While we didn't get a peel job, on our old boat, we got a sand blasting and skim coat of epoxy put on, we had many hundreds of pock blisters, but hindsight being 20/20, I wouldn't do it again and am glad we sold the boat shortly after. I have a feeling they will come back, but hey... I could be wrong.
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Old 09-25-2016, 09:23 AM   #5
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Yes, and to be specific anything in writing only covers workmanship and material defects, I don't think any yard would do a "no blisters" guarantee.
That goes to the core of my question, are there resin/build issues causing these or is it usually water penetration? If they are issues in the build no recoat will ever help.
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Old 09-25-2016, 09:33 AM   #6
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It is only my opinion, but I highly doubt any boat yard would give you one. There are just too many variables that could leave them exposed to liability.
I agree but I still think the yard should be asked. I have seen many, too many epoxy bottom job failures however, Steve D'antonio who shows up on this forum on occasion says he has never had one fail and did offer guarantees when he ran a yard.
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