Green Building Store continues to fine tune passive house design and construction techniques with exacting attention to detail, as demonstrated by its latest superinsulated, stone-clad cavity wall house in West Yorkshire.

For Ruth Busbridge and her builder Mike Whitfield, aiming for the passive house standard was just one part of an environmentally conscious approach that put natural, healthy materials to the fore.

Hitting Enerphit – the passive house standard for retrofits – wasn’t challenging enough for one Yorkshire retrofit project. The team also had to stop the building falling down, and avoid wholesale changes to the building’s external appearance.