Jim,

You could try using Great Stuff wide gap formula (the black can) - I find it expands a little less and is a little denser than the many of the other DIY spray insulation.   I just used a half-dozen cans of it this week to refill some gaps that had to be cut in the closed cell spray foam we had installed last month to allow for electrical and mechanical.

If you give it 24-48 hours to cure .... the wider the gap/crack the longer it will need ... it sands and paints well.

Roy

On 27-Jan-2015, at 11:30, Jim Felder wrote:

> When I have used that insulating foam on projects like visor restoration, I
> have found it to keep expanding over days or weeks. I guess if you were
> patient you could do a pretty good job. The pictures are pretty compelling.
> But just know you will need to let it complete expanding before you sand it
> out.
> 
> Jim
> 
> On Tue, Jan 27, 2015 at 9:22 AM, Tom Buese <tantonbz@gmail.com> wrote:
> 
>> Whoa, that is pretty cool!  My dashes are in good shape, but something
>> worth knowing just in case.
>> 
>> Cheers,
>> 
>> Mr. BZ
>> 
>> On Tue, Jan 27, 2015 at 8:36 AM, Harry Hoffman <hhoffman@ip-solutions.net>
>> wrote:
>> 
>>> Hi All,
>>> 
>>> NVC here but applicable to our rigs anyway:
>>> 
>>> https://imgur.com/a/CSPME/noscript
>>> 
>>> Cheers,
>>> Harry
>>> 
>> 
>> 
>> 
>> --
>> Tom Buese
>>