Many buyers confuse absorption with insulation and often select the wrong material, leading to failed project acceptance.

Sound insulation: Blocks sound from passing from one side to the other - relies on dense, heavy materials (concrete walls, gypsum board, lead sheets). The core principle is "adding mass" - the heavier the material, the better the insulation.

Sound absorption: Reduces echoes and reverberation time indoors - relies on porous, loose materials (glasswool board, polyurethane foam). The core principle is "friction energy loss" - sound waves enter the material, rub against countless fibers, and convert sound energy into heat - noise fades away.

Centrifugal glasswool board is a classic porous sound-absorbing material. It performs particularly well against mid-to-low frequency noise (HVAC vibrations, equipment hum, compressor rumble) - precisely the range where ordinary foam and polyurethane struggle.

Key Advantages:

High sound absorption coefficient - NRC (Noise Reduction Coefficient) can reach 0.8+

No warping or mold in humid environments - high water repellency

Easy on-site cutting with standard knives - low installation waste

Dual function - sound absorption + thermal insulation in one material