ISO 12468-1:2013规定了一种测试方法，以确定屋顶对外部火灾的耐受性。该方法评估了屋顶暴露在三种燃烧品牌下时的性能，它们与风和热辐射相结合，涉及穿过屋顶外表面的火灾蔓延、屋顶内的火灾蔓延、火灾穿透以及从屋顶下侧穿过屋顶的燃烧液滴或碎片的产生，或者从暴露的表面。

ISO 12468-1:2013 specifies a test method to determine the resistance of roofs to external exposure to fire. This method evaluates the behaviour of the roof when exposed to three types of burning brands combined with wind and with or without heat radiation, concerning the fire spread across the external surface of the roof, the fire spread within the roof, the fire penetration, and the production of flaming droplets or debris falling through the roof, from the underside of the roof, or from the exposed surface.