| Sound Reduction Performance |
| Airborne | Impact |
| RwdB | RwdB+Ctr | LnwdB |
| 63 | 54 | 56 |
| Acoustic Requirement: New Build |
| Airborne: 45 DnTw+CtrdB |
| Impact: 62 LnTwdB |
| Acoustic Requirement: Refurbishment |
| Airborne: 43 DnTw+CtrdB |
| Impact: 64 LnTwdB |
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Components and Fixing Data:
1 x 18mm T&G Chipboard (screwed to)
Timber Joists (240 x 48mm at 400mm centres. Joist size to suit application)
52mm Acoustic Quilt (beneath joists)
Independant Ceiling:
Timber Joists (100 x 48mm on hangers at 400mm centres)
2 x 15mm Acoustic Plasterboard (screwed to independant joists)
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