[Public-List] Hull thickness question

[Gordon Laco]

All that is why I tried spraying it into a plastic bag....  I would have
bought closed cell foam but I was in a bit of a rush getting the tank
installed for the '06 Misery Trip and used what I had available nearby.
Five years on I can say that the foam is still dry in it's plastic bag
envelope.  I can also say I wouldn't recommend this method because it took a
long time for the foam to cure in the bag... I worried a lot while I was
waiting.

Gord #426 SURPRISE


On 10/11/11 9:51 AM, "Meinhold, Michael J." <MICHAEL.J.MEINHOLD at saic.com>
wrote:

> I once did a project where we created an object out of "Great Stuff" and
> needed to measure its volume using displaced water. I spray-painted it with
> two coats of rustoleum and checked it's weight throughout the project to see
> if it absorbed any water during its frequent full immersion - it did not.
> This doesn't do you much good if you need to spray the stuff in tight spaces
> of course.
> 
> 
> 
> -----Original Message-----
> From: public-list-bounces at lists.alberg30.org
> [mailto:public-list-bounces at lists.alberg30.org] On Behalf Of
> crufone at comcast.net
> Sent: Thursday, November 10, 2011 9:33 AM
> To: Alberg 30 Public List -- open to all
> Subject: Re: [Public-List] Hull thickness question
> 
> Normally the 'great stuff' you purchase in the big box stores is not closed
> cell. While it forms a cuticle over it's outside surface that too will allow
> water to penetrate to foam inside. If you want closed cell then you need to
> specifically designate closed cell. Usually much more expensive and I don't
> know if it is available in a foam application. Usually just in sheets and
> blocks. 
> 
> ----- Original Message -----
> From: "Rod Symmes" <weatherhelm at hotmail.com>
> To: "A30 List" <public-list at lists.alberg30.org>
> Sent: Wednesday, November 9, 2011 11:43:09 AM
> Subject: Re: [Public-List] Hull thickness question
> 
> 
>  >the foam was in the bag, which I hope will inhibit the absorption of water.<
> 
> Gord - do you know if the cans of expanding foam result in open cell or closed
> cell foam ??  Any time I have used the stuff around the house where it cures
> while exposed to the air it appears to skin over with a surface that looks
> like it would shed water. [ Not so if you trim off the excess with a knife. ]
>   
> Any thoughts from anyone else ?
> 
> Cheers,   Rod 
> 
> ~~~~_/) ~~~~~~~~~~
> ~~~~~~~_/)  _/) ~~~~~~~
> ~~_/) ~~~~~~~~~~~~
> 
> 
>                                                
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