So, I have two Jotul Firelight 12's, each installed in a large stone fireplace, both on an exterior walls. One stove is placed 12" from the rear wall of the fireplace, whereas the other is only 3" from the stone wall. Exterior IR photos show that a good bit of heat is radiating into these walls, and heating my back yard, and we've been disappointed with how well these stoves are heating our house. We can maintain 70 degrees in the end of the house that is framed construction, but can rarely get above 68 degrees in the end of the house that is all stone. We do have distribution problems to fix, and the house is not exactly super air-tight, but I know that I'm losing a TON of heat into the stonework. I would like to place something behind each stove, which will both reflect and insulate, assuming this will not cause damage to the stove. I would be interested to know if Jotul makes a blower assembly for the Firelight (600, may fit the 12?), which has an integral rear shield. Barring that, perhaps a metal on microre laminate, or something similar? Must be made to look good, or invisible, and must fit into a pretty narrow space (again... only 3" gap behind one stove). Ideas?