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Totalboat Foam

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Old 09-13-2018, 10:52 PM
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Default Totalboat Foam

I'm wondering if anybody has any input or tips on mixing the 2-part Totalboat 2 lb expanding foam. I think I was mixing it wrong.



I just tried using this stuff and got about half the volume that I intended out of the 2 gallon kit. I calculated just under 8 cubic feet needed and didn't get anywhere near that.



The first batch I mixed it until uniform then poured it but did not notice much expansion. The next batches I mixed longer, the mixture went from brown unmixed to frothy with some swirls then back to a clearish dark brown (this color changed happened quickly) then frothy and hot. That's when I poured it and got decent expansion.



All was done with the temp around 75 degrees outside at a 1:1 ratio. Mixed anywhere from 16 oz to 24 oz total each time. I ordered more but don't want to screw it up again.
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Old 09-14-2018, 05:44 AM
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75 degrees is the minimum temp and if your supplies where in conditioned space they may have been too cold.
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Old 09-14-2018, 05:48 AM
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Read one of the comments posted on their website, and the guy said he had the best input from a customer service rep at Jamestown Marine. From what I read, your ratio and temp are good. Looks like you only have seconds to mix before you need to start pouring.
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Old 09-14-2018, 06:16 AM
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It was stored outside same temp or warmer during the day.

I'll check their website too.
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Old 09-14-2018, 06:20 AM
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I used Mar Pro foam. 1:1 ratio 2# foam. I just checked the can and it says you have 45 seconds to mix and pour. It worked great. It is quick to start expanding and if it starts to do that it is too late to pour.
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Old 09-14-2018, 06:40 AM
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Yup 2 part has to be room temp or slightly better
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Old 09-14-2018, 07:31 AM
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The 2 part urethane foams active much better when the fluids are above 75 degrees....the warmer the better...

Try placing the containers in a small to medium size box.....then grab a heat lamp or drop light and place it over top of the box....this will warm the temperature in the box as well as the two part foam containers.

Also be sure to gently shake the containers before and after warm up...this has worked well for me.
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Old 09-14-2018, 07:39 AM
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Whenever I use that type of 2 part foam I always use a a bullet heater to heat the area then after the pour to heat up the foam to get maximum expansion. I did mine in the middle of the summer and still used a heater. You'd be surprised how much more expansion you'll get.
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Old 09-14-2018, 07:58 AM
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I laid some 2part and noticed as the day got warmer, the expansion increased. You gotta' work the temperature. As note above.. you'll be surprised.
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Find a way to heat your work area...
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Old 09-14-2018, 08:15 AM
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So nobody thinks mixing it too long is an issue?

I'll work on heating the area a bit and see what happens.

Right now, I'm waiting for more foam to get shipped. Anybody know if any stores sell the 2-part foam. We have a West Marine store but their foam is expensive. Any other places?
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Old 09-14-2018, 12:32 PM
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I agree that the tempature effects it the most. I would set the jugs out in the sun and let them warm up.
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Old 09-14-2018, 02:40 PM
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Originally Posted by jgraham114 View Post
So nobody thinks mixing it too long is an issue?
if you mix too long, it will start expanding in the cup. Warmer temperatures = better expansion.
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Old 09-15-2018, 09:08 PM
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Originally Posted by jgraham114 View Post
So nobody thinks mixing it too long is an issue?

I'll work on heating the area a bit and see what happens.

Right now, I'm waiting for more foam to get shipped. Anybody know if any stores sell the 2-part foam. We have a West Marine store but their foam is expensive. Any other places?
Check out uscomposites.com.

​Different densities also.
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Old 09-17-2018, 08:27 AM
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Originally Posted by mshugg View Post


if you mix too long, it will start expanding in the cup. Warmer temperatures = better expansion.

this
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Old 09-17-2018, 12:12 PM
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Remember this is an exothermic reaction, your first pour will not expand quite as much as subsequent pours as each pour generates heat. After a couple of pours you can really get it rolling. Have a cardboard box nearby to throw used cups and stir sticks into, might get away with using those things a couple of times but after that its time to get a clean ones and keep going. Getting that stuff on your skin is not enjoyable so be careful there.
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