Sound Absorption
In accordance with BS EN ISO 354:2003 and BS EN ISO 11654:1997.
| Sisalwool Silent Thickness | Sound Absorption Coefficient | Rating |
| 100mm | 1.00 αw | Class A |
| 50mm | 0.85 (H) αw | Class B |
Solid Timber Floor Build Up
In accordance with BS EN ISO 10140-2:2021 for requirements of Building Regulations Part E.
| Joist Size | Stud Spacing | Plasterboard | Chipboard | Sisalwool Silent Thickness | Sound Reduction (Rw) |
|---|---|---|---|---|---|
| 200 x 50mm | 450mm | 1 x 12.5mm standard wallboard | 1 x 22mm T&G | 100mm | 42dB |
Internal Partition Wall Build Up
In accordance with BS EN ISO 10140-2:2021 for requirements of Building Regulations Part E.
| Timber Stud Size | Stud Spacing | Plasterboard | Sisalwool Silent Thickness | Sound Reduction (Rw) |
|---|---|---|---|---|
| 63mm | 600mm | 2 x 12.5mm standard wallboard | 50mm | 40dB |
Data sheet download
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