GammaStone AIR panels have passed the two most severe international tests required by the strict American (NFPA 285) and English (BS8414-1) standards on fire. GammaStone’s commitment to supplying high quality, fully tested ventilated & drained rain screen systems in the US moves forward with the recent passing of NFPA 285, a strict American test complying with fire regulation of exterior panels installed on building facades. This confirms the beauty of Natural Stone and many other materials offered by GammaStone can be installed on building facades safely with no restrictions. The BS8414-1 test is by far the most severe in the world made on panels for cladding buildings. Our material was installed on a concrete structure using the aluminum anchoring system of ventilated facades. The surface of over 30sqm, which reached 8.5m in height, was subjected to the flames emitted by a 2m combustion chamber obtained at the base of the wall itself. The “fire test” lasts a total of 60 minutes, of which the first 30 of direct exposure to the flame. This test is considered fundamental for the use of building materials in UK, Middle East, Australia and New Zealand.