Acoustic Foam

Acoustic foam is an open-cell polyurethane or melamine foam used primarily for mid-to-high frequency sound absorption in recording studios, broadcast rooms, and home offices. Available in various profiles (wedge, pyramid, egg-crate, flat), its absorption performance depends on thickness, density, and cell structure. Typical NRC values range from 0.50 (25 mm) to 0.90 (100 mm). Acoustic foam is lightweight, easy to install with adhesive, and available in many colors. However, it provides minimal low-frequency absorption unless very thick (100 mm+) and has lower fire resistance than mineral wool unless specifically treated. Melamine foam (branded as Basotect by BASF) offers superior fire performance (Euroclass B-s1,d0) and is preferred for commercial and public buildings. Acoustic foam is not suitable for sound insulation between rooms, as it adds negligible mass to the partition.