Gyproc SoundBloc Board Gyproc SoundBloc Board is a high-performance gypsum board designed to reduce sound transmission between walls and ceilings. Its dense aerated gypsum core enhances sound reflection, effectively blocking external noise while retaining internal sound within a room. These boards are widely used in soundproof drywall partitions and false ceiling systems, making them ideal for theaters, recording studios, conference rooms, and home theaters. With an STC rating of up to 70 dB, SoundBloc Boards provide excellent noise insulation. For enhanced soundproofing, they can be combined with insulation materials like fiberglass wool, mineral rock wool, polyester wadding, or polywool insulation, ensuring superior acoustic control.