Looking for a Troldtekt Alternative? Wood Wool Acoustic Panels Compared

If you are specifying acoustic ceilings or walls in Europe, Troldtekt and Heraklith are usually the first wood wool cement board (WWCB) names that come up. They are well-established, well-documented products. But they are not the only WWCB on the market, and for many projects a like-for-like alternative delivers the same acoustic and fire performance at better value. This guide explains what WWCB actually is, what to check before you switch, and where Sonablock fits.

What is wood wool cement board (WWCB)?

WWCB is made from long-strand wood wool (usually spruce) bound with Portland cement. The mineral binder makes the board dimensionally stable, moisture-tolerant and free of VOC off-gassing, while the open fibrous surface absorbs mid- and high-frequency sound. It is the material behind most "wood wool" acoustic ceilings you see in schools, sports halls and offices. Troldtekt, Heraklith, CEWOOD and Sonablock are all WWCB products built on the same basic principle.

What actually matters when choosing a WWCB supplier

Architects rarely ask "who is cheapest?" — they ask "can I specify this without risk?" So the real comparison points are:

  • Fire classification. Look for a documented EN 13501-1 rating. Sonablock is certified Class B-s1,d0 (low smoke, no flaming droplets), suitable for escape routes and public buildings.
  • Acoustic data. A weighted absorption coefficient (αw) tells you real performance. Sonablock achieves αw 0.70–0.85 depending on mounting and fibre size.
  • Certifications. CE marking, an Environmental Product Declaration (EPD) and PEFC/FSC chain-of-custody are what get a product through a specification. Sonablock carries CE, EPD (EPD-IES-0031288) and PEFC (BMCERT-PEFC-COC-00175).
  • Sizes and finishes. Check available thicknesses, panel sizes and colours. Sonablock comes in 15 mm and 25 mm (35 mm on request), sizes to 2400 × 600 mm, three fibre textures (1.0 / 1.5 / 2.0 mm) and five colours plus custom RAL/NCS and printed panels.
  • Supply and lead time. Many WWCB brands route everything through "request a quote." A distributor with transparent pricing and stock-to-order shortens the cycle.

How Sonablock compares

Sonablock is a Latvian-made WWCB manufactured by Stiga RM on one of Europe's most modern production lines, with AI-assisted quality control on every board. On the specification points above it is directly comparable to the established brands — same material class, documented fire and acoustic performance, full certification suite. The practical differences are commercial: Wall Panels Pro lists transparent per-panel pricing online, offers a project calculator so you can size an order yourself, and ships across the EU on pallets with worldwide container freight available. There is no industrial quotation wall for standard sizes.

Switching an existing specification

Because WWCB products share the same installation methods (adhesive plus mechanical fixings, optional air gap for low-frequency absorption), substituting one for another is usually straightforward at design stage. Match the thickness, fire class and αw to the original specification, confirm the colour, and request samples before committing. For larger projects we provide the documentation pack (CE, EPD, fire and acoustic certificates) specifiers need.

Next steps

Use the Sonablock project calculator to estimate panels and pallets for your space, browse the Sonablock range, or contact us for samples, the full documentation pack, or project and export pricing. We ship across Europe and arrange FCL/LCL container freight worldwide.

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