Does anyone know if the blue coloured wall insulation will dry out at all?  
It's like a dense foam, sort of like the stuff used in an oasis for 
flowers.

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The above post may contain traces of irony

Tunku wrote:
> Does anyone know if the blue coloured wall insulation will dry out at all?  
> It's like a dense foam, sort of like the stuff used in an oasis for 
> flowers.

Can you cut a piece off to play with?

See how it acts under the tap - if it absorbs water which can be 
squeezed out it is unlikely to dry out. If it doesn't absorb water, any 
dampness that you have should just be on the surface - but beware that 
you don't know what has already run around the outside and where it has 
ended up.