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At that age it should have cavity walls. You can tell by the appearance of the brickwork.
They might not be insulated though.
It's possible to add insulation to the cavity, but it can have side effects.
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Looks like you could get boards of it to insulate walls?
Or get someone to do it.
Sorry, I have UTFS but it's not thrown up much.
We live in a townhouse, built about 25 years ago. The house is extremely cold, every morning throughout winter when you come down the stairs to the kitchen on the ground floor, it feels like someone has left the door open all night. Even now after a couple of cold days it's Oodie time. And the middle and upper floors aren't much better. Every wall in the house is freezing cold to touch.
A couple of years ago the hot water expansion tank in the airing cupboard on the top floor failed, filled up with water and ripped itself off the wall, bring a chunk of plasterboard with it. Looking through, I could see the outer brickwork, no insulation present whatsoever. It really makes me wonder if the house is even insulated on the lower levels.
Loft is fully boarded with lots of insulation under the panels.
I've read about spray foam insulation but it doesn't sound like the greatest idea when it comes to moisture management. Doesn't anyone do spray mineral wool spray any more??