Hello. I was hoping to use the concept without utilizing a large amount of mass. I was more worried about the fact it was on the second floor. I was going to add support structure below where the weight would be the greatest. I could just do a wood burning stove but really liked the idea of efficiency and less exhaust.
I have a barn/garage and my work shop is on the second floor. What is required to safely install a rocket mass heater on the second floor? I was thinking a heat shield on the floor and design the combustion chamber off the floor. Any ideas to do this safely? Has this been done?