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Old 12 December 2011, 13:34   #1
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Where can I get pourable foam?

After getting the fuel tanks tested I now need to refit them.. I was going to rebed them in the 2 part expanding foam.

Is this the best way of securing the tanks? I could make a jig and attempt to glass it in but it probably wont look pretty!!

Where can I get suitable foam?I ve looked online and it all seems to be for sale in the US.
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Old 12 December 2011, 16:45   #2
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try demon tweeks (motorsports place) they used to sell it for making tailored seats, and filling voids behind body panels. 01978664466 worth a phone call at least.
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Old 12 December 2011, 17:17   #3
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Try using expanding builder's foam. Comes in a can, and is quite aimable as a result. Once set it is very strong and crucially is designed to be cut and painted.
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Old 12 December 2011, 17:35   #4
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I thought I had to use urethane foam as it was closed cell and didnt absorb water...
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Old 12 December 2011, 17:44   #5
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There is truth in that, but the expandable foam can be painted with hull/bilge paint to effectively seal it. And in doing so you can very effectively blend your work into the boat.
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Old 12 December 2011, 19:42   #6
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Foams & Core Materials, 2 Part Polyurethane Foam Liquid, - CFS Fibreglass Supplies
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Old 13 December 2011, 03:14   #7
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I would not count too much about the statement that polyurethane foam, even so called "closed cell" would not suck water ovet time. One foam that won't suck any relevant amount of water even in severe conditions and over time is XPS, type " blue dow, styrofoam".

XPS on the other hand dosen't take solvents unless proteckted and is not a expandable. I would secure tanks by other means and in case wanting to add buoyancy would fill the space with XPS.

But if the volyme of the empty space is small, guess liquid foam would do the job, would not use expanding building foam in a boat.
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Old 13 December 2011, 03:50   #8
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Scott Bader sell it and have branches all over the place ...........
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Old 13 December 2011, 04:35   #9
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If it's under the floor does it need to look neat as long as it holds the tank in?

I have one word for you: Dory. Most now weigh about as much as a small planet......
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Old 15 December 2011, 14:42   #10
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Why do you want to block the tank with expandable foam ?
Not safe, and possible chemical reaction could be expected against SS, giving rust and holes.
I had this case in an italian rib, tank under the deck, impossible to remove without cutting it ...!

No PU foam is closed cell, so it becomes a sponge when the water gest around !
It is closed cells when expanded in a closed and tight volume, with a precise volume injected, but not in free expansion.

I prefer to maintain the tank with straps - I add GRP D-shaped, stratified where necessary, into the tank compartment - and eventually I add cheap white polstyrene laminated foam to fill the volumes around
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