Technical Booklet G Resistance to the Passage of Sound·Page 42·2.69
Wall type 2.3 construction requirements
Wall type 2.3 is a cavity wall construction with two leaves of lightweight aggregate block and plasterboard on both faces, designed to provide sound resistance. It requires minimum specifications for block density, cavity width, and plasterboard mass.
Two leaves of lightweight aggregate block with 75 mm cavity and plasterboard on both room faces (see Diagram 2.17) – minimum mass per unit area including plasterboard 290 kg/m2; lightweight aggregate blocks should have a density in the range 1350 to 1600 kg/m3; minimum cavity width of 75 mm; plasterboard, each sheet of minimum mass per unit area 10 kg/m2, on both room faces.
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