Sound insulation, Rw (minimum) to BS EN ISO 10140-2 or BS EN ISO 140-3
38 Rw (dB).
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Duty rating to BS 5234-2
Medium duty (MD).
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Maximum height - cold state
2500 mm.
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Thickness
75 mm.
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Classification data
Framing
Track: SFST52.
Stud: SFS50 C stud 50 mm width at 600 mm centres.
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Insulation
Not required.
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Linings
Board side 1, layer 1: Gyproc Soundbloc 12.5 mm.
Board side 2, layer 1: Gyproc Soundbloc 12.5 mm.
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Fasteners
Drywall screw (25 mm length).
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Joint treatment
Vertical joints: treated in accordance tape joint method.
Horizontal joints: backed by SFS1 (flat strap) and treated in accordance with tape joint method.