We often mention that PVC plastic floor has the characteristics of flame retardant, and its fire rating is B1. What does B1 mean? What kind of burning grade does PVC plastic floor have?
1. Fire performance of building materials: non combustible building materials belong to class A, i.e. non combustible materials.
2. Fire performance of building materials: Class B1: the fire protection of building materials is divided into Class B1, and the fire-resistant materials have good fire-retardant effect. Under the action of air or high temperature, it is not easy to ignite and spread rapidly. When the fire source is removed, the combustion will stop immediately.
3. Building materials fire performance B2: the combustible building materials are classified as B2, and the combustible materials have certain fire-retardant effect. When exposed to open fire or high temperature in the air, it will immediately ignite and burn, which is easy to cause fire spread, such as wooden columns, wooden frames, wooden beams, wooden stairs, etc.
4. Fire performance of building materials: class B3: inflammable building materials belong to class B3, which have no fire-retardant effect, are easy to burn and have high fire risk.
According to the fire classification standard of PVC plastic floor, the fire performance of PVC floor with the fire-retardant performance of building materials above B1 level is qualified, so PVC plastic floor has the fire-retardant property. Therefore, the national regulations on the fire rating of PVC plastic floor must be above B1 level.
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