On Wed, 17 Oct 2007 15:04:49 +0100 Doctor Drivel wrote :
For the average UK home the whole idea if building two walls is an
expensive luxury. Building two wall were one can do. A highly
insulated single wall is the best way.

A cavity wall lets you use durable and aesthetically pleasing facing
bricks economically and much cheaper (but no less fit for purpose)
blockwork for the inner skin. If you insulate the cavity you
increase the thermal mass (and thus comfort) within the house.

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