FABRIC SPECIFICATION / acoustic
Wool Serge 420
A lighter wool serge option for acoustic drapery and general stage applications.
Manufacturer texture image. Colours on screen are indicative.
J&C JOEL · WS100
- Fabric width
- 150cm / 59"
- Fabric weight
- 420gsm
- Composition
- See manufacturer data pack
- FR durability
- IFR
- Listed fire certifications
- BS5867
- Thickness
- 1.35mm
Published acoustic configurations.
Compare results & understand the tests ↗| Fullness | Wall cavity | Absorption class | SAC classification* | Evidence |
|---|---|---|---|---|
| 0% | 100 mm | Class D | 0.50 | Brochure p. 19 ↗ |
| 0% | 350 mm | Class C | 0.65 | Brochure p. 19 ↗ |
| 50% | 100 mm | Class C | 0.75 | Brochure p. 19 ↗ |
| 50% | 350 mm | Class B | 0.85 | Brochure p. 19 ↗ |
| 100% | 100 mm | Class B | 0.85 | Brochure p. 19 ↗ |
| 100% | 350 mm | Class A | 0.95 | Brochure p. 19 ↗ |
*Manufacturer’s “SAC classification” label. These configuration-specific figures are not frequency-band coefficients, noise-reduction percentages or sound-insulation ratings. Original test reports should be checked for the intended installation.
Technical documents.
Wool Serge 420 — Data packdata pack · PDF ↗JCJ FR Cert Wool Serge 420 BS5867fire report · PDF ↗Acoustic Solutions Brochure (Wool Serge 420: page 19)acoustic brochure · PDF ↗
Source verified 2026-10-19. Check the current report and project requirements before specification.
FROM SPECIFICATION TO INSTALLATION
Let’s make your
space work better.
Share your dimensions, your application and what you need to achieve. We’ll help you specify the fabric and finish.
Discuss your project