Stiga RM
Sonablock Wood Wool Acoustic Panel 25mm · 2.0mm fibre
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Natural wood wool cement board (WWCB) acoustic panels, also known as fibrolite, made from sustainably sourced wood fibres bound with Portland cement. Sonablock 2.0mm delivers genuine sound absorption, Euroclass B-s1,d0 fire rating, and a bold, coarse surface texture suited to industrial and raw interiors. A sustainable, EU-made alternative to Heraklith and Troldtekt wood wool panels.
The 2.0mm coarse fibre gives the most open, tactile surface of the three fibre sizes - popular for loft offices, sports facilities, retail and anywhere an honest, unfinished aesthetic is intentional.
Manufactured by Stiga RM - a PEFC-certified Latvian producer. Tested by RISE Research Institutes of Sweden and classified by an EN ISO/IEC 17025 accredited laboratory.
Fire Safety
- Euroclass B-s1,d0 per EN 13501-1:2018
- Low smoke production (s1) · No flaming droplets (d0)
- Classified K25/2026 by accredited Latvian testing laboratory
- Valid for wall and ceiling installations with and without air gap
Technical Specifications
| Thickness | 25 mm |
| Fibre width | 2.0 mm |
| Panel sizes | 600×600 mm · 1200×600 mm · 2400×600 mm |
| Thermal conductivity | λ 0.067–0.070 W/m·K (EN 13168) |
| Max. relative humidity | 90% RH |
| Edge profiles | B0, B5, B11, A24, E24, E24/90, C |
| Designation | WW-EN13168-L4-W2-T2-S2-P2-Cl3 |
Sound absorption coefficient and density for the 2.0mm coarse fibre variant are available on request via the full product data sheet.
Available Colours
Natural (unpainted) · White RAL 9010 · Light Grey RAL 7035 · Dark Grey RAL 7004 · Black RAL 9011
Custom RAL / NCS colours available on request - contact us for a quote.
Certifications
- CE marking per EN 13168:2012+A1:2015
- Declaration of Performance (DoP SB 1.1)
- PEFC Chain of Custody (BMCERT-PEFC-COC-00175, valid to Feb 2028)
- Environmental Product Declaration - EPD-IES-0031288 (valid to 2031)
- No added formaldehyde · REACH compliant
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