No less important for consumers is their reaction to fire, which guarantees the highest level of safety in case of fire. The third reason for the choice of our wool is perfect acoustic insulation. It's specified by the acoustic absorption index α (AW). It takes values from 0 to 1. One means that the sound has been completely absorbed and zero - that it has been completely reflected. Residents of areas with elevated noise levels will appreciate the comfort that Petralight can give.