One of the most recent and high profile projects involving specialist British Gypsum suspended ceilings is the Royal Opera House in Covent Garden. Architect Dixon Jones bdp had to overcome the complex acoustic challenges inherent in such a design, with a requirement for mass ceilings and mass walls within the auditorium, and the need to accommodate a rehearsal room for the orchestra under the auditorium, below the seats of the audience.
The solution used by British Gypsum, and its approved contractor Thermofelt Contracts Limited, also included anti-vibration pads for hanging suspended ceilings away from the main structure to minimise reverberation. In order to suppress transmitted sound, an mf ceiling with two layers of Gyproc Soundbloc plank was used. To meet the demanding acoustic requirements in the rehearsal rooms, large areas of Gyptone ceiling boards were specified to prevent noise reverberation during performances.
In the four ancillary ballet rehearsal rooms, three layers of Soundbloc plank were positioned behind the fully mirrored surfaces , to offer further reductions in transmitted sound.