When it comes to fire ratings and metal roofing, the higher melting point of copper and steel leads to a naturally higher fire rating. With aluminum, special fire-resistant underlayment must be used for a Class A or Class B rating. But even with a standard underlayment, it’s still a non-combustible roof surface. The lower melting point of aluminum with a standard underlayment can protect against any exterior threats. However, it will still allow an interior fire to burn through and vent. The low weight of metal roofing is an added benefit when it comes to fire resistance. Most roofing materials are much heavier than metal. These materials can pose a significant cave-in threat in the event of an interior fire. In worst cases, when the roof collapses, firefighters can only contain the fire from the outside rather than go inside and extinguish it. A low-weight roof can help prevent collapses. The weight of aluminum roofing is a half-pound per square foot, compared to one pound for steel, three pounds for asphalt shingles, and twenty pounds for tile. There are several key steps you can take for fire safety. Some are dictated by building code, and others are personal preferences. I frequently talk to architects and property owners in their quest for fire safety. I’m here to help, so please feel free to contact me at any time.