John Rumm wrote:

Mary Fisher wrote:

In January 1993 we paid something over £300 for cavity wall insulation,

So about £450 in today's money allowing for inflation...

accompanied by the mocking of neighbours (just as they did in January 2005
when installed solar water heating). They said it wouldn't make any
difference to anyone except the company which did it.

It ought to make some difference to comfort. You might even get it to
pay given long enough. It certainly more effective in this respect than
double glazing for example.

On the subject of double glazing, a neighbour has it and keeps his house
virtually 'hermetically sealed'. As a result it's always unpleasantly damp
inside. He seems incapable of understanding why too.

Allowing some airflow is *very important*.

Graham