Idea for foaming inside of hull

[xlandguy]

I have this idea of using a pool noodle or maybe round pipe insulation foam. Place a pool noodle in the right place, and pour the two part foam around/all over the pool noodle and this would give the foam a way to expand without damaging the hull. Also using some sort of release agent, oil? so that if the foam does shrink in the future it wont pull in the hull.

[Rumdog]

With the right foam, you dont need to do any of this.

[xlandguy]

That's true I am sure. I'm just a little that it might go wrong. As far as the foam I am going to use what is the most recommended; http://www.shopmaninc.com/foam.html . I am pretty sure this is what Kintec sells, and also a member on these forums sells it too I think. But what about the ideas, just totaly not needed? I read here that a members boat "dimpled" when the foam shrunk. I want to do this to my Motley Crew, and that thing has a very thin skin in places, like the top of the hull between the sponsons, like .20 lexan!

I pour foamed my UL-1 a few years ago and now I kind of wish I didn't because it's going to be a pain to carve it out now for putting the batteries in the sponsons.
It also caused some dimpling on the deck but nothing on the bottom. I read somewhere somebody else had the same problem.
I don't know if I would use the battery maybe a wood mockup covered in wax paper and a release agent, the foam is nasty it sticks to everything tape off everything before you pour. You don't have much time to pour it starts to expand right away. I had a cup where it set up as I was pouring it.
If you have it cut out already maybe just stuff it with pool noodle foam and use velcro for the batts?

But, I don't know what kind of foam he used. Presumably the "good stuff". I'll have to see if I can ask him.

[JimClark]

look in the FS Forum there is some for sale