Image: Graphic from the California "Passive Solar Handbook"

Graphic from the California "Passive Solar Handbook"

Regarding a Monolithic Dome’s super insulation, Perry wrote, “…three of the four structural dome construction materials — Airform, polyurethane and concrete (excluding rebar) — serve to isolate the dome’s internal environment from the outdoors.”

Image from Monolithic Domes: The Ultimate "Green" Building? story