Traditional school classrooms have hard floors and bare ceilings, leading to obvious indoor reverberation and noise accumulation. Student chatter, textbook flipping sound and outdoor stray noise interfere with teaching. Excessive echo makes teachers’ voices blurred, causing listening fatigue and affecting students’ learning efficiency. Educational spaces require fireproof, moisture-proof, durable and safe acoustic materials.

We completely replaced the original classroom ceiling with high-density fiberglass acoustic ceiling tiles. The material features inherent Class A fire resistance, low smoke and non-toxicity, fully complying with global school building safety standards. The high-density porous structure achieves NRC 0.90–0.95, effectively absorbing indoor classroom noise and outdoor transmitted sound. The tiles resist sagging, mildew and deformation, suitable for long-term daily teaching use.

After renovation, indoor classroom noise is significantly reduced, and teacher speech becomes clear and stable with no echo distortion. The quiet teaching environment improves students’ concentration and learning efficiency. The low-maintenance ceiling system meets long-term safety and usage requirements of educational institutions.