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Does alum boat seam filler shrink and swell in old boats?
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<blockquote data-quote="docksider" data-source="post: 281981" data-attributes="member: 9906"><p>There is that (usually black) material along major rivetted seams in most aluminum boats. In older boats, to what degree does that shrink when dry for a long time and swell shut when placed in the water. It seems I've noticed a bit of that temporary leaking in one of my old boats, all of which are leak free once left in the water for the season.</p><p></p><p>I just bought a 1963 mirrocraft that appears to be in great shape and which was professed to be leak free, but leaks a bit at a seam near the bottom of the bow/stem plate and a bit at a side seam near the waterline (below waterline when I'm in the boat). I'm wondering whether to wait and see, goop it with 5200, or return the boat. When I asked a local dealer to confirm my impression that some leaks may to be due to this dried out seam material, I was told "no, that doesn't happen as far as I've ever seen."</p><p></p><p>Do any of you know more about this topic?</p><p></p><p>Thanks!</p></blockquote><p></p>
[QUOTE="docksider, post: 281981, member: 9906"] There is that (usually black) material along major rivetted seams in most aluminum boats. In older boats, to what degree does that shrink when dry for a long time and swell shut when placed in the water. It seems I've noticed a bit of that temporary leaking in one of my old boats, all of which are leak free once left in the water for the season. I just bought a 1963 mirrocraft that appears to be in great shape and which was professed to be leak free, but leaks a bit at a seam near the bottom of the bow/stem plate and a bit at a side seam near the waterline (below waterline when I'm in the boat). I'm wondering whether to wait and see, goop it with 5200, or return the boat. When I asked a local dealer to confirm my impression that some leaks may to be due to this dried out seam material, I was told "no, that doesn't happen as far as I've ever seen." Do any of you know more about this topic? Thanks! [/QUOTE]
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Does alum boat seam filler shrink and swell in old boats?
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