I had a potential customer call me and say that a propane infrared heater byproduct has stained the side of an aluminum sidded building. He hired a company that came, couldnt get it off with brushes and bleach, tried simple green...then bailed. Any suggestions on what to use without hurting the siding? Siding is 1 year old....would a degreaser work?
Clark
www.hilltoppainting.com