It may take something longer than your furnace system, but over time your space will become warm and cozy. Tall buildings obviously need strong metal foundations and large walls to help it, which isn't aesthetically smart. https://heealthy.com/question/el-papel-esencial-del-vidrio-resistente-al-fuego-en-la-cimentacion-moderna-en-el-mundo-actual-la-seguridad-y-la-proteccion-son-consideraciones-primordiales-en-el-diseno-arquitectonico-2/