Stone Clad Metal Roof Tiles

Fire Resistance (Class A Rating)
Color-coated stone chip tiles inherently achieve a Class A fire resistance rating according to ASTM E108/UL 790, the highest classification for roof coverings. This rating signifies the material is effective against severe fire exposure, does not carry flame across its surface, produces minimal flying brand hazard, and does not allow significant fire penetration to the roof deck. This exceptional fire performance is due to the composition: the core is non-combustible steel, the stone granules are inert mineral matter (basalt/granite), and the acrylic resin binder, while organic, is present in a relatively small quantity and is fully encapsulated within the non-combustible granule layer and steel substrate. There are no flammable components exposed on the surface or within the core structure of the tile itself.

A Class A rating is crucial for homeowner safety, building code compliance (especially in wildfire-prone areas - WUI zones), and potentially lower insurance premiums. In wildfire scenarios, the primary threat comes from wind-blown embers (firebrands) landing on the roof. The non-combustible stone granule surface of these tiles provides excellent protection against ember ignition. Embers cannot easily ignite the tile material and will typically burn out or cool down on the stone surface without penetrating. The tight interlocking installation also minimizes gaps where embers could lodge and potentially ignite debris or the underlying deck. This performance stands in stark contrast to Class C (moderate) or unrated materials like untreated wood shakes, which are highly flammable, or even some organic-based shingles that can be vulnerable to embers. While clay and concrete tiles are also Class A, they are significantly heavier. The Class A rating of stone chip tiles, combined with their lightweight nature and durability, makes them an outstanding choice for fire safety in residential and commercial buildings, particularly in regions with high wildfire risk, providing critical protection for the structure and its occupants.