Ceilings are excellent places for sound absorbing materials as well as additional fire and thermal insulation. Because they are installed so high, the soft and absorbent stone wool slabs and lamellas are safe from mechanical damage and provide optimal acoustic performance. At the same time that you create a good sound environment, you increase the fire safety and energy efficiency of the structure.
Cellar ceiling lamellas can be glued directly onto a cellar ceiling with adhesive. The visible side of lamella is covered with a silicate-based coating. The coating shortens the finishing time of the final surface.
The fire performance of a hollow core slab without additional fire protection is REI 30 – REI 120 depending on the slab type. The additional fire protection of the hollow core or massive concrete slab slows down the temperature rise of reinforcing steels.