Many people worry that after cutting slots and placing wires and pipes inside a wall panel, the sound insulation performance of the wall will drop significantly, leading to noise leakage between rooms. This is indeed a common problem for many low-quality lightweight wall panels. After slotting, the internal structure of these panels is damaged, creating sound transmission paths that make the wall far less effective at blocking noise. But EPS Cement Sandwich Panel is designed with a full consideration of this situation, maintaining stable and reliable sound insulation performance even after all slotting and wiring work is completed.

The high-density EPS core inside the panel is a natural sound absorption material, and the double cement facing layers reflect and block sound waves from both sides. Even after you cut a slot of 20mm depth on one side, the remaining thickness of the panel still maintains a continuous sound insulation structure. After you fill the slot with cement putty, the repaired area will have almost the same density and sound insulation performance as the original panel. Independent acoustic tests show that a 100mm thick EPS Cement Sandwich Panel with completed wiring and slot repair can still achieve a sound insulation rating of over 40dB, which is enough to block normal speaking voice, TV sound and office equipment noise between two adjacent rooms. For hotel guest rooms, office partitions and apartment interior walls, this performance fully meets national building acoustic standards. You do not need to add extra sound insulation cotton or other acoustic layers after wiring, which saves you more material and labor cost.