"Doctor Evil" wrote in message
...

"Bob Smith (UK)" bob@nospamplease wrote in message
...

I recently got a flyer through the letterbox from a company wanting to
take
advantage of grants to insulate private homes. They say they will
insulate
my house with mineral wool for £150, and that it is £400 without the
grant.

Is it any better than polystyrene? Does mineral wool conduct damp, ie,
does
mineral wool "bridge" damp proof courses. I know polystyrene does not
conduct damp. Also, what would be the cost difference?

Is this cavity wall insulation?


Yes.

The reply by BigWallop included a link to a site detailing the 3 main types
of insulation. It says all 3 types do not conduct water, although they are
not vapour barriers.

Bob