本标准适用于所有单层、聚合物改性沥青板、BUR和液体应用屋顶组件，旨在保护建筑物及其占用物免受自然天气因素的影响。

This standard applies to all single-ply, polymer-modified bitumen sheet, BUR and liquid applied roof assemblies intended to protect the building and its occupancy from the weather elements of nature.