As a common roofing material, the fire resistance of PVC-steel roofing tiles is of critical importance. The fire resistance rating primarily depends on the type and proportion of flame retardants used, and there are significant differences among products from different manufacturers. According to national standards, plastic-steel roofing tiles typically meet Class B1 (flame-retardant) requirements; they are not easily ignited when exposed to fire and will self-extinguish, making them suitable for locations with high fire safety requirements. Class B2 tiles burn at a slower rate and meet the needs of general industrial facilities. When purchasing...
