

To add about the dressing house up or down,
During the last winter even when it was snowing and in the single-digits outside, we didn’t have to turn on the heating for the house using the boiler. By dressing the house up, and ourselves dressing up a bit, the house was plenty warm and comfortable.
Soldering alone wouldn’t work. The house is a monolithic dome, so it has over 20 inches of concrete for the outer most dome layer. I’d have to drill with masonry bolts and risk cracking the concrete of the house for it.