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423zero View Drop Down
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Posts: 3420 		Post Options Post Options   Quote 423zero Quote  Post ReplyReply Direct Link To This Post Topic: Expanding foam filler
    Posted: 08 Oct 17 at 11:14am
plus, it can generate pressure and cause bulges.
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JimC View Drop Down
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Posts: 6662 		Post Options Post Options   Quote JimC Quote  Post ReplyReply Direct Link To This Post Posted: 08 Oct 17 at 11:05am
It will absorb water and its fairly heavy (well by foam standards. I suppose you could paint it. The biggest problem I'd have though, if you are using it to pack inside tanks, say, is that water will lie between it and the main structure. If the main structure is wood that means rot, and if the main structure is glass, that means osmosis.
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GarethT View Drop Down
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Posts: 714 		Post Options Post Options   Quote GarethT Quote  Post ReplyReply Direct Link To This Post Posted: 08 Oct 17 at 9:44am
Does anyone have any experience of using weatherproof expanding foam on boats?

I'm thinking of using it for packing rather than anything structural. If I cut/sand it, will it absord water? Can I paint to seal it?

Thanks for any advice.
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