2 part pourable foam over fresh epoxy

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jonnymac
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2 part pourable foam over fresh epoxy

Post by jonnymac »

I haven’t done anything yet. But how long do ya’ll think I should wait for the epoxy to cure before covering it with the expanding buoyancy foam?



jonnymac
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Re: 2 part pourable foam over fresh epoxy

Post by jonnymac »

I searched the forum for this question no results that made sense. posted the question and the suggested posts had exactly what i was looking for. 🤦‍♂️

TomW1
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Re: 2 part pourable foam over fresh epoxy

Post by TomW1 »

Two days would be fine. The epoxy will continue to cure even with the foam on top of it.

Tom
Restored Mirror Dinghy, Bought OD18 built by CL, Westlawn School of Yacht Design courses. LT US Navy 1970-1978

OneWayTraffic
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Re: 2 part pourable foam over fresh epoxy

Post by OneWayTraffic »

TomW1 wrote: Sun May 02, 2021 5:51 pm Two days would be fine. The epoxy will continue to cure even with the foam on top of it.

Tom
How will Amine blush affect the bond of the foam to the panel? I occasionally get visible blush, but not often.

fallguy1000
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Re: 2 part pourable foam over fresh epoxy

Post by fallguy1000 »

OneWayTraffic wrote: Sun May 02, 2021 8:46 pm
TomW1 wrote: Sun May 02, 2021 5:51 pm Two days would be fine. The epoxy will continue to cure even with the foam on top of it.

Tom
How will Amine blush affect the bond of the foam to the panel? I occasionally get visible blush, but not often.
The foam doesn't need to bond to the panel, imo. It isn't structural..
My boat build is here -------->

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OneWayTraffic
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Re: 2 part pourable foam over fresh epoxy

Post by OneWayTraffic »

fallguy1000 wrote: Sun May 02, 2021 9:09 pm
OneWayTraffic wrote: Sun May 02, 2021 8:46 pm
TomW1 wrote: Sun May 02, 2021 5:51 pm Two days would be fine. The epoxy will continue to cure even with the foam on top of it.

Tom
How will Amine blush affect the bond of the foam to the panel? I occasionally get visible blush, but not often.
The foam doesn't need to bond to the panel, imo. It isn't structural..
True, but it would be nice if it stays put. Any extra strength is a bonus. I'm just planning to give mine a quick scrub and sand before foam, but it would be good to know how this all works.

jonnymac
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Re: 2 part pourable foam over fresh epoxy

Post by jonnymac »

thanks everyone for the thoughts.

theoretically as long as the epoxy doesn’t have access to moisture it shouldn’t blush, but i would guess 2 days into cure if it was going to blush it would have by that point.

TomW1
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Re: 2 part pourable foam over fresh epoxy

Post by TomW1 »

jonnymac wrote: Sun May 02, 2021 10:44 pm thanks everyone for the thoughts.

theoretically as long as the epoxy doesn’t have access to moisture it shouldn’t blush, but i would guess 2 days into cure if it was going to blush it would have by that point.
Yep your right. :D
Restored Mirror Dinghy, Bought OD18 built by CL, Westlawn School of Yacht Design courses. LT US Navy 1970-1978

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