I am going to install a woodstove in my new garage/pole barn. The closes combustible will be 7/16 OSB on the wall. Not sure what the stove is going to be yet but it will be a stove with a little age. Possibly a wood furnace. I know the minimum clearance is 36" but I would like to make it closer. My stove in the house is much closer but it is in front of a concrete wall. What have others done or what is the best method of heat shielding/ protecting the wall that is still considered legal?