> Bricks and stone provide abysmal thermal insulation Even 80-90 years ago, brick housing in wester Europe was made with walls of two layers with an air/insula

> Bricks and stone provide abysmal thermal insulation Even 80-90 years ago, brick housing in wester Europe was made with walls of two layers with an air/insulation cavity inbetween. Current practices usually don't use clay bricks but aerated concrete [1] which has great thermal insulation, plus insulation layers on top. > what does "much more solid" windows mean exactly Triple-glazed windows with well-insulated frames, rather than single-pane push-up windows that leak heat like a sieve. Massive difference in thermal and acoustic insulation. [1] https://en.wikipedia.org/wiki/Autoclaved_aerated_concrete https://en.wikipedia.org/wiki/Autoclaved_aerated_concrete