On Thu, 15 Nov 2007 13:06:36 -0800 (PST) Dg wrote :
For insulation, any PIR type (ie celotex or Kingspan) with a silver
foil backing will do. They will perform more or less the same.

I'm not sure that the Jablite product is as thermally good as the PIR
foams

If the Jablite product is expanded polystyrene, it's not: you need 80mm
of EPS to do the same as 50mm of PIR/polyurethane board.

--
Tony Bryer SDA UK 'Software to build on' http://www.sda.co.uk