APP profiled wall liners provide a practical acoustic wall finish for drama rooms, gyms, corridors and studios. A cost effective treatment for large areas where a very robust acoustic finish is required.

Science rooms with walls treated with APP perforated liners. The specially profiled finish allows the fixing of displays and notices without significant loss of acoustic performance. In this science block, all the normal noticeboards could be dispensed with. Installed in conjunction with TBS/YW panels to ceiling reduced the reverberation time from 3 seconds to 0.6 seconds

TBS/W acoustic baffles installed in Technology Rooms in a secondary school. The baffles have a wet wipeable surface and are demountable from the Unistrut roof channels. Acoustic baffles allow roof mounted treatment of building with high thermal mass ceilings where other forms of treatment would restrict convected and radiant heat flows. Reverberation time reduced from 1.8 seconds to 0.6 seconds

Acoustishock lining to upper walls and roof of multipurpose community hall. Before treatment, the reverberation time was nearly 3 seconds and the hall was almost unusable. After treatment, which reduced the reverberation time to 0.5 seconds, the hall was transformed for speech, music and sport. Even playgroups were (relatively) peaceful.