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Old 08-07-2018, 11:17 AM   #1
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Has anyone used “flex seal” on a fiberglass salt water kept hull ? The manufacturer says it should be fine...I have a 7 kt trawler. With some annoying little leaks that it would probably take care of but ?????
Feedback please.
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Old 08-07-2018, 11:33 AM   #2
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Originally Posted by timmer View Post
Has anyone used “flex seal” on a fiberglass salt water kept hull ? The manufacturer says it should be fine...I have a 7 kt trawler. With some annoying little leaks that it would probably take care of but ?????
Feedback please.

A fiberglass hull should not leak. Where are the leaks? Flex Seal might temporarily stop the leaks but it would be a stop gap measure at best. It doesn't sound like a good idea to me. However, I am often wrong.
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Old 08-07-2018, 11:34 AM   #3
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You need to be more specific about your leaks. Are you planning on using it on the inside or outside? What caused the leaks? Are they structural?

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Old 08-07-2018, 11:39 AM   #4
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I used flex seal spray on the inside of 2 deck top lockers. They both leaked and to fix it I would have had to cut holes in places that were NOT leaking. It worked, but anything I put into those lockers got black streaks on them. I would not use it.
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