So another thread someone posted that they used plastic sheeting which was labeled as fire retardant on a show and the fire marshall threatened to shut them down. Not only did they have to remove the sheeting but also paint fire retardant on the flats and floor. This got me thinking that we need a good discussion on the topic. Fire Retardant Muslin or not for flats? Does Latex paint make it more or less fire retardant? What about the Rosco stuff? What about painting fire retardant on wood set pieces, flats, floors, etc? When do you ALWAYS use fire retardant? When do you not worry about it much?