Rockwool seemed to be the obvious choice, but just read up on how 
thick it needs to be. Ain't boats complex things :) I just admire how 
they have evolved and learning some of the reasons why.

Steve

 --- In [email protected], "Ron Jones" <[EMAIL PROTECTED]> wrote:
>
> Steve wrote:
> > This thread had got me curious enough to come out of lurk mode :)
> >
> > Being no expert on fitting boats out I'm maybe missing the 
obvious.
> > But after seeing the speed polystyrene burns and the acrid smoke
> > produced when it burns its always given me some slightly worrying
> > thoughts when I've seen it insulating some of the boats we have
> > hired.  Is it really the best product to use?
> 
> It can burn fast and propagate over large areas if exposed.  One 
can buy it 
> treated with a fire retardant.  However, the polystyrene is not 
exposed, 
> it's behind wood panelling, the wood has to catch fire first, and 
that's 
> going to give just as much horrible smoke as the insulation.  At 
least 
> polystyrene has no nitrogen in it's structure, thus no cyanide when 
it 
> burns - unlike polyurethane foam...
> Since the walls of a boat are always going to be made of some 
combustible 
> material, it just emphasises the need for a (or more) smoke alarm
(s).
> 
> 
> >> Ron Jones


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