Just wondering what people's experiences are of insulation applied to the exterior of old stone walls? It's relatively new in the UK. It apparently totals 70mm in thickness, consisting of 3 different layers. In theory, it is the ideal solution to old stone houses that have no cavity, and where battoning and plasterboarding with insulation would lose too much space on the inside.
Has this product greatly increased anyone's thermal conservation, as well as removed the usual cold ingress problem? (cold wall surface + moisture in the air = damp and mould).
I'd be interested to hear any info at all on this, as we're considering it for our stone cottage.
Cheers and many thanks