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Old 23-01-2022, 14:58   #1
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Fairing/sealing hull to keel joint

Hi,
Some of keel fairing chipped away. See picture. But the rest looks OK. No idea what is was, but feels rubbery. I don't think there is any structural issue there, no water seeping out. So question N1: should I remove the entire seal all around and re-do or just that area?
And N2: how do I seal the joint? Some epoxy fairing like Watertite / thickened fairing epoxy? Or just patch with 5200? The hull is fiberglass and keel is lead.
Thanks.
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Old 25-01-2022, 14:17   #2
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Re: Fairing/sealing hull to keel joint

I don't see any issues. That's not impact damage. I suggest that you take it down to the fiberglass, no putting fairing on paint, rough it a little for good adhesion, and then it's your choice on 5200 or epoxy.

Oh. Second brain wave. If the joint has been sealed with silicone, I'd pull it all out and use something a bit sturdier.
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Old 25-01-2022, 14:30   #3
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Re: Fairing/sealing hull to keel joint

Quote:
Originally Posted by vladkri View Post
Hi,
Some of keel fairing chipped away. See picture. But the rest looks OK. No idea what is was, but feels rubbery. I don't think there is any structural issue there, no water seeping out. So question N1: should I remove the entire seal all around and re-do or just that area?
And N2: how do I seal the joint? Some epoxy fairing like Watertite / thickened fairing epoxy? Or just patch with 5200? The hull is fiberglass and keel is lead.
Thanks.
For chipping fairing material like this I have used several products, depending on what is available:
  1. Chip away all loose material (use putty knife).
  2. Sand or grind down to bare foundation (old solid paint or bare lead or epoxy primer, whatever) for good adhesion.
  3. Apply epoxy putty (or bondo or fiberglass putty or whatever), but do not try to use 5200 or other sealant for fairing.
  4. sand and paint (primer is optional)
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