Is Metal Roof Class A

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Is metal roof class a. Just be aware that part of a roof s overall classification depends on materials beneath the surface that could ignite in intense heat too. Astm e108 fire resistance fire rated roof systems ibc metal roof metal roof advantages ul 790. Metal roofs can be as much as two or three times more expensive than other roofing materials. Class a roofing is the preferred choice for any home but this type of roofing is particularly important if you live in an area that is prone to wildfires.

Experience maximum flame spread of 6 feet. This is proven if it can. Ul 2218 standard for impact resistance of prepared roof covering materials. Our metal roof and wall panels qualify for underwriters laboratories ul class a fire rating ul 90 wind uplift rating and class 4 ul impact resistance hail rating.

Roofing materials are changing for the better becoming more and more advanced each year. To achieve a class a rating the roof must be effective against severe fire exposure. Examples of a class a roof covering include concrete or clay roof tiles fiberglass asphalt composition shingles and metal roofs. I believe that under the current icc code if you have a steel roof covering it automatically receives class a regardless of the rest of the assembly.

An example of an unrated covering is an untreated wood shake roof. Class a is the highest rating offering the highest resistance to fire and unrated is the worst. Class a roof assemblies include those with coverings of brick masonry or an exposed concrete roof deck. Metal roofs can be noisy especially during a heavy rain or hailstorm.

Most if not all metal roofing and wall systems are class a fire rated and noncombustible making it the most resistant to catching on fire. Most metal panel manufacturers have tested their roof assemblies and most if not all metal panels and shingles can be used in class a fire rated roof systems. Class a roof assemblies also include ferrous or copper shingles or sheets metal sheets and shingles clay or concrete roof tile or slate installed on noncombustible decks or ferrous copper or metal sheets installed without a roof deck on noncombustible framing. However if that is not the case then you need to contact the manufacturer of the roofing and see how their product was installed when it passed class a testing.

A stone coated steel roof costs about 2 1 2 times as much as a standard asphalt roof. Because metal roof materials are noncombustible they typically have a class a fire rating the most fire resistant rating.