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Spray foam for flotation?
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<blockquote data-quote="DaleH" data-source="post: 401864" data-attributes="member: 15636"><p><em>Installed properly</em>, USCG/marine quality 2-part urethane closed-cell foam will skin over and not absorb water. In worse cases, same marine quality foam would only absorb 10% of its own (foam) weight in water through 'perimeter permeation', says US Composites ... and it takes decades to do that.</p><p></p><p>That said, I have no doubt that 'cheap' foam could absorb almost its full volume of water ... in years.</p></blockquote><p></p>
[QUOTE="DaleH, post: 401864, member: 15636"] [i]Installed properly[/i], USCG/marine quality 2-part urethane closed-cell foam will skin over and not absorb water. In worse cases, same marine quality foam would only absorb 10% of its own (foam) weight in water through 'perimeter permeation', says US Composites ... and it takes decades to do that. That said, I have no doubt that 'cheap' foam could absorb almost its full volume of water ... in years. [/QUOTE]
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Spray foam for flotation?
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