— By Marian Nolletti — The dangers of rooftop grease. Any type of grease from animal fats or vegetable fats on a rooftop can reduce the roof system’s resistance to UV rays and heat. Plus, it can cause premature deterioration of your roof, as well as increase the risk of fires and slips and falls. If all of that isn’t bad enough, it can also void most roof warranties and violate environmental regulations. Grease will destroy any roof system if left sitting on it. Common defects from it include …
