Noticed a few nail pops in the ceiling above my propane forge. Woodworker from down the creek said I should put in a heat shield or vent before I burn through the ceiling. Probably a good idea and have ceased work until I can fabricate a 40” x 48” metal sheet and hang it about 2 feet below the 9 foot ceiling. That should take the heat and deflect it harmlessly into the shop and not onto the ceiling. With a fan I hope to disperse the hot air from the forge in the summer. In the winter it feels good. All for now. Be safe.