People in the purchase of PVC flooring, often ask whether it can pass the fire. Here, it is necessary for us to understand, by the way, how this level is divided, PVC flooring in the national standard GB8624-97 in the combustion performance of building materials will be issued several levels.

1, Class A: non-combustible building materials: almost non-combustible materials.

2, B1 level: refractory building materials: refractory materials have a good flame retardant effect. In the air in the open flame or at high temperatures, it is difficult to fire, not easy to spread quickly, when the source of ignition is moved away from the burning stop immediately. For example, our composite dense bottom and the same permeable, commonly used places are schools, kindergartens, hospitals, factories and so on.

3, B2 level: natural building materials: combustible materials have a certain flame retardant effect. In the air in case of open flame or under the action of high temperature will immediately catch fire, easy to lead to the spread of fire which, such as wooden columns, wooden roof frame, wooden beams, wooden stairs and so on.

4, B3: flammable building materials: without any flame retardant effect, very easy to burn, fire hazard.

From the above classification we can see that the quality of qualified PVC flooring fire performance belongs to the B level, so that PVC flooring has the characteristics of fire retardant. The national regulations of PVC flooring fire rating must be B1 level.