Tony Brooks wrote: > --- In [email protected], "Ron Jones" <[EMAIL PROTECTED]> wrote: >> >> Mike Casswell wrote: >>> After stalling somewhat over the winter, the refit of Jemima D is >>> about to recommence. I have a few questions and would welcome any >>> views, opinions or experience. >>> >>> We are intending to insulate using expanded polystyrene sheet. I >>> would like to know what adhesive we should use to attach it to the >>> steel hull and cabin. >>> >>> I have been told that adhesive is not necessary, that simply by >>> cutting to the right size it can be wedged in place. This may be >>> true, of the flat sections at least, but not where there are curves >>> towards the bow. Additionally, this will introduce an air gap next >>> to the steel with the possibility of just the condensation problems >>> we are trying to avoid. >> >> Most glues dissolve polystyrene (you'll be amazed how much it >> shrinks, when hit by solvent). >> Why condensation? You only get that *if* the warm damp boat air >> gets to the hull. By making sure the polystyrene is always slightly >> large, you should stop that. If you don't then by the same >> reasoning the cold air from the steel surface will get into the boat! >> Thinking laterally - has anyone stuck kitchen foil on the steel >> before putting in the polystyrene? That would cut down on any >> radiant heat transmission. >> >> Ron Jones >> > > No, but when I re-did the back cabin I used that > aluminiumised "bubble-wrap" between the polystyrene and the panels. I > think it has improved the insulation and I hope it was sealed a few > cracks where air could get to the metal. > > Anyway lets think - damp air, steel, aluminium. Well I suppose it > would stop the steel rusting until the foil dissolved ;-)
Lol. I wans't think chemistry, I had my physics head on... ;-) Maybe a nice silver hammerite instead. Ron Jones Process Safety & Development Specialist Don't repeat history, unreported chemical lab/plant near misses at http://www.crhf.org.uk Only two things are certain: The universe and human stupidity; and I'm not certain about the universe. ~ Albert Einstein
