"Andy Hall" wrote in message

I was going to suggest the Knauf U value calculator normally available
as
a
trial version from
http://www.knaufinsulation.co.uk/ but it is unavailable at the moment
as
it
is apparently being updated.

It may be worthwhile checking the site in a week or so if you \re
still
interpreted.

The point is that the house has to be viewed
as upper and lower floors. the
difference in the upper floors is marked
in most houses.

Heatloss through walls of the same construction, accounting for
temperature variation, varies depending on whether you are upstairs or
downstairs?

Grow up! The rooms in the upper floors have a large area that is the
ceiling with a cold loft over in winter and hot loft over in summer.
Insulate the loft heavily and heat loss in these rooms reduces considerably,
giving superior comfort conditions in winter and summer, moreso than the
ground floors.

You didn't know that did you?



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