On Thu, 25 Nov 2010 09:51:07 -0800 (PST), harry wrote:

Solid walled houses are perfect for insulation. On the outside.

Yeah if you just have boring concrete, render or bricks. Not so good
with random stone and wanting to keep the building looking "in
keeping with the area".

The 8" walls become a heat reservoir.

Only 8"? Pah! the thinest here are 12". The nice "thermal store"
right through the middle of the house and full height/length of the
house is 18" thick and yes it does stabilse the house temperature.
But never ever let it get cold...

--
Cheers
Dave.