My stove is nestled in a solid masonry wall, which rests on a big cinderblock foundation (that my builder cleverly dubbed "the sarcophagus"). I'm curious how much heat the thing is radiating into my crawlspace and thus whether or not it's worth insulating the thing - probably by gluing styrofoam blue-board to it. The Stefan-Boltzman law tells me that if the thing is about 90 degrees, and the ambient temperature in the crawlspace is about 40, then I'm losing about 5000 btu/hour due to radiation of heat. This is from this calculator: http://www.endmemo.com/physics/radenergy.php .. you have to plug in 90 and 40 for the temperture and then subtract. I'm not sure how to calculate the loss due to convection though.