NT FIRE 006：屋顶火焰传播性能测试
NT FIRE 006：Roofings, fire spread
This NORDTEST method is identical with the standard INSTA 413. This test method specifies a procedure to determine the tendency of a roofing to spread fire. The test method described is intended for roofings.The test method measures a roof coverings ability to withstand flame spread when exposed to a burning wood crib.
