The public service hall of community centers undertakes residents’ business handling, public lectures and mass group activities. The original ordinary ceiling has weak sound absorption capacity. Crowd noise, broadcasting voice and equipment operating noise are continuously superimposed and reverberated in the high-space hall, making the broadcasting information unclear and the overall environment noisy. Public service buildings put forward strict requirements on fire prevention, moisture proof and long-term stability of ceiling materials.

The public hall completely replaces the original ceiling with high-density inorganic fiberglass acoustic ceiling tiles. The material owns natural Class A fireproof, low-smoke and non-toxic properties, complying with the fire protection codes of public service buildings. The porous interconnection structure reaches NRC 0.90–0.95 to absorb composite noise such as human voices and mechanical equipment. The material is resistant to sagging and mildew, keeping stable performance under long-term air circulation environment.

After reconstruction, the background noise of the service hall during peak service hours is obviously decreased. Public broadcasting sounds are clear and easy to recognize without echo reverberation. The ceiling system is durable with low maintenance difficulty, lowering the daily operation and maintenance cost of community public facilities.