Help please - expanding foam

I met a couple in Inverness who had come south for the winter - from Spitzbergen!!

Their steel hull was insulated with neoprene. They were pretty pleased with it.
 
Re: Not even hydromanic

No.
Hydrophilic (note the spelling) means attracting water, as opposed to hydrophobic which means repelling water. More to do with surface tension and wetting angle than absorption.

And me, I have my own angle and frequently foam at the mouth.
 
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