Speaking of the micro balls. I know a guy that sells thermal paint, it contains tiny glass spheres and is suppose to help with radiant heat. The guy he works for built a canvas tent style house and painted the entire inside and the only heat source they had last winter was a small wood stove and it keep the place warm. You think that paint would be a good thing to use on the inside of the floor pans, doors and roof? I’d probably put fatmat or something on top of that then too