I live in a Wimpey built semi-detached chalet type house.If, for example, I
was to get walls insulated how would this affect the other semi.I mean
would the insulation creep through to the other house and would it be
advisable to have both houses done,also I had soffits and facias replaced a
few years ago and I suspect that builders took the insulation out from the
dormers and did not replace it.Can the cavities there be insulated
considering the fact that the inside wall is plasterboard,I think!
I would appreciate any help with this.