On 12/30/2017 8:48 PM, Michael Chare wrote:

Depends on property. Possibly not a good idea if a property is likely to
be subject to much driving rain.

We're on the north coast of Scotland - driving rain with gale force
winds is the reason we haven't had insulation pumped into the wall
cavity. What we have is insulation-backed plasterboard - with that,
double-glazing, and tight-fitting doors and windows, the house stays
nice and warm.