Blisters!

A forum for discussing topics relating to MacGregor Powersailor Sailboats
LOUIS B HOLUB
Admiral
Posts: 1315
Joined: Wed Oct 19, 2005 7:40 am
Location: 1999 Mac-X, Nissan 50 HP, Kemah, TX, "Holub Boat"

Re: Blisters!

Post by LOUIS B HOLUB »

Dave Mason wrote: The link to Nigel Klegg's article on Osmotic action was like finding the Bible on this problem. He even says boats with color infused in the hulls are even more prone to blistering. It is caused by incomplete curing during layup, and could come from inside the ballast tanks just as easily.
We slip our Mac X, I keep the ballast tank empty, assuming "in tank" blisters could occur. The Mac rides hi and dry in her slip, and it works fine in our 'wind protected' marina.
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daydreamerbob
Engineer
Posts: 175
Joined: Sun Apr 06, 2008 7:29 pm
Location: 2008 26M, Yamaha T60, Lake Allatoona - Acworth, GA, Very Much Faster Blue Hull - No Scratches

Re: Blisters!

Post by daydreamerbob »

The bottom of my 2008 26M - there are some really good shots of my blisters

http://www.flickr.com/photos/caspiansei ... 447138402/
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Bluecrab
Engineer
Posts: 136
Joined: Mon Aug 20, 2007 10:09 pm
Sailboat: MacGregor 26M
Location: Land of 10,000 Prior lake, MN, Honda BF50

Re: Blisters!

Post by Bluecrab »

daydreamerbob wrote:The bottom of my 2008 26M - there are some really good shots of my blisters
Looks a little like ours.

I apologize in advance if it has already been mentioned here, page 20 of the manual says "If the boat is left in the water (either fresh or salt water), apply a top grade of anti-fouling bottom paint with an 18 mil think (.018) epoxy under coat. Without good bottom paint and epoxy primer, the white gel coat exterior surface may blister." The PO left it in the water 2 years for 9 months at a time without either bottom paint or epoxy prime.

I did spend over an hour with a very knowledgeable rep from West systems talking about the issue. Bottom line, he said if I plan to trailer, it should not get any worse (and hasn't), put my favorite wax on it, get it in the water, enjoy it and for get about them. If I decide to slip it to do what has already been talked about, sand, epoxy primer and paint and forget about them.

Wally
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Scottie
Deckhand
Posts: 32
Joined: Sun May 25, 2008 8:45 pm
Sailboat: MacGregor 26M
Location: Maple Ridge, B.C. - 2007 M - Honda 50

Re: Blisters!

Post by Scottie »

The site below has some interesting reading on the topic of blisters.

http://www.yachtsurvey.com/
SkiDeep2001
Captain
Posts: 582
Joined: Wed Feb 11, 2009 1:27 am
Sailboat: MacGregor 26X
Location: Redmond,WA USA 98X Nissan50 CATMAN DOUX

Re: Blisters!

Post by SkiDeep2001 »

Scottie wrote:The site below has some interesting reading on the topic of blisters.

http://www.yachtsurvey.com/
Great post Scottie, There are some really ugly bottoms in his articles. I'm glad my 98 is still looking great. One thing for sure, when I had my :macx: inspected by Cheryl at Blue Water Yachts in April after I purchased her, she said my hull was in great shape and she had a newer used :macm: on a trailer that was on consignment, I believe, and it had a recent repaint that was already in bad shape :o She said it wasn't done by somebody she would recommend. If you have to re-do your hull finish it pays to have it done correctly and not cut corners :? You gets what you pays for :|
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