On Tue, 05 Oct 2010 21:19:12 +0100, S R wrote:

My house is a semi built in 1873, from Yorkshire stone.

It is a devil of a job heating it and keeping the heat in.

I'm getting the existing poor quality double glazing replaced next summer, but I
am also considering cavity wall insulation.

I'm not sure how effective CWI is in house such as mine, and also the effect it
has on resisting or promoting damp penetration.

Get in touch with the local council environment dept. who will come round
to check whether you are eligible for a grant. Mine has solid (brick) walls
at the front and cavity at the back, but they drilled the wall and found
that the gap is too narrow. (
--
Jim S
Tyneside UK
www.jimscott.co.uk