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– Colonel –
Guest
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 Posted: Thu Nov 22, 2007 11:04 pm Post subject: Spray Foam for Floatation? |
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I need to fill in some missing foam under the front seat of an aluminum
john boat. Does anyone know if I can use that "Great Stuff" spray foam
or whatever it's called that they sell at Home Depot, etc. for use in
houses?
I believe that stuff is a closed-cell foam. Has anyone used it in this
application and is it appropriate?
Thanks. |
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Lew Hodgett
Guest
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| Posted: Fri Nov 23, 2007 1:12 am Post subject: Re: Spray Foam for Floatation? |
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"- Colonel -" wrote :
| Quote: | I need to fill in some missing foam under the front seat of an aluminum
john boat. Does anyone know if I can use that "Great Stuff" spray foam or
whatever it's called that they sell at Home Depot, etc. for use in house I
believe that stuff is a closed-cell foam. Has anyone used it in this
application and is it appropriate?
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Not a good application for Great Stuff.
You need to get a poured urethane foam kit.
Do a Google.
I bought a kit from a company in South Florida a couple of years ago.
Lew |
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Brian Whatcott
Guest
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| Posted: Fri Nov 23, 2007 5:21 am Post subject: Re: Spray Foam for Floatation? |
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On Thu, 22 Nov 2007 17:04:33 GMT, – Colonel – <nobody@fishing.net>
wrote:
| Quote: | I need to fill in some missing foam under the front seat of an aluminum
john boat. Does anyone know if I can use that "Great Stuff" spray foam
or whatever it's called that they sell at Home Depot, etc. for use in
houses?
I believe that stuff is a closed-cell foam. Has anyone used it in this
application and is it appropriate?
Thanks.
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The only relevant factoid I have is that people who used foam
polurethane aerosils under a glass skin on homebuild aircraft were
disconcerted to find that the stuff swelled again on a hot day,
messing with their faired curves.
Brian Whatcott Altus OK |
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drskew@volcanomail.com
Guest
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| Posted: Tue Nov 27, 2007 3:56 am Post subject: Re: Spray Foam for Floatation? |
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Don't mess with Great Stuff in your boat. Great Stuff requires
moisture from the air to expand and cure. If filling a large cavity
the Stuff in the middle won't get enough exposure to the air to cure,
and will remain uncured, and there is a potential that under the right
conditions, it can later get enough moisture to expand at the worst
possible time. There's no reason to use it, except that it is
available at the local Wal-Mart. It won't be cheaper than 2 part
foam. It will take longer to apply. Go to http://www.raka.com or
http://www.uscomposites.com and buy some of the 2lb/ ft3 two part foam
instead, they'll have it out to you in a couple of days and you can do
your boat right.
Ed. |
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