Stiga RM
Sonablock Groove Line Wood Wool Acoustic Panel 25mm · 1.0mm fibre
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PRICE PER SIZE:
- 1200 × 600 mm - €29,52/sheet (€41,00/m²)
Prices are per m² excluding VAT, Natural colour; painted colours are priced per variant. Minimum order: 1 pallet (31.68 m²) - orders below 1 pallet incur a +€255 surcharge. Contact us for project quotes, custom lengths or edge profile options.
Grooved wood wool cement board (WWCB) acoustic panels from the Sonablock Design range, also known as fibrolite, made from PEFC-certified Latvian spruce fibres bound with Portland cement. Sonablock Groove Line adds evenly spaced longitudinal grooves to the standard 25 mm / 1.0 mm fibre panel, giving a clean, continuous surface with a distinctive linear look and a Euroclass B-s1,d0 fire rating.
The grooves are designed for direct mounting with screws: panels are fixed through the groove bottoms to timber battens, metal CD profiles or a flat supporting surface, so the fixings sit below the face and the finished wall or ceiling reads as one continuous grooved plane. No separate clip or edge-trim system is required.
Manufactured by Stiga RM, a PEFC-certified Latvian producer. Same material, fire classification and documentation set as the standard Sonablock 25 mm panel.
Acoustic Performance
- Open-structure wood wool surface, 1.0 mm fine fibre, 25 mm thick
- Sonablock panels reach up to αw 0.85 depending on fibre width, thickness and installation depth (manufacturer datasheet); the standard 25 mm / 1.0 mm panel measures αw 0.60 at 200 mm overall depth (RISE report O100282)
- Test data for Groove Line build-ups available on request
Fire Safety
- Euroclass B-s1,d0 per EN 13501-1
- Low smoke production (s1) · No flaming droplets (d0)
- Suitable for wall and ceiling installations
Technical Specifications
| Thickness | 25 mm |
| Fibre width | 1.0 mm |
| Surface | Longitudinal grooves (Groove Line) |
| Panel size | 1200 × 600 mm |
| Edge profile | B5 |
| Weight | 11 kg/m² (7.92 kg per panel) |
| Thermal conductivity | λ avg. 0.067 W/m·K (EN 13168) |
| Max. relative humidity | 90% RH |
| Mounting | Direct screw fixing through the grooves |
| Packaging | 44 panels per pallet (31.68 m²) |
| Standards | EN 13168, EN 13964 |
| Designation | WW-EN13168-L4-W2-T2-S2-P2-Cl3 |
Available Colours
Natural (unpainted) · White (similar to RAL 9010) · Grey · Black (similar to 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 available on request
- 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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