Troldtekt vs Sonablock: Wood Wool Acoustic Panel Comparison

Troldtekt and Sonablock are both wood wool cement board (WWCB) acoustic panels: long-strand spruce wood wool bound with Portland cement, used for acoustic ceilings and walls in schools, offices, sports halls and public buildings. If you are weighing one against the other, here is an honest, like-for-like comparison of what actually matters at specification stage.

How do Troldtekt and Sonablock compare at a glance?

Troldtekt figures are indicative of the product class; always confirm against the manufacturer's current datasheet for the exact panel you are comparing.

How do Troldtekt and Sonablock compare on acoustics?

Both are open-fibre WWCB, so they absorb mid and high frequencies well. The single most important thing to understand when comparing published numbers is that an αw figure is meaningless without the build-up it was measured on. The same panel can be Class D or Class A depending on what sits behind it.

Sonablock reaches αw 0.60 to 0.65, Absorption Class C, tested to EN ISO 354 by RISE Research Institutes of Sweden (report O100282), as a bare panel with a 200 mm air gap. Like all wood wool cement board, absorption rises substantially when mineral wool is added in the cavity behind the panel, and published test data across the WWCB category shows Class A build-ups achieved that way. Headline figures quoted as "up to 1.00" by any manufacturer refer to that kind of composite build-up, not to a bare board.

The practical takeaway when comparing quotes: check that both products are being quoted on the same build-up. If your specification calls for a higher absorption class, talk to us about cavity build-ups rather than assuming the bare panel figure is the ceiling.

How do Troldtekt and Sonablock compare on fire rating and certification?

Both reach Class B-s1,d0 under EN 13501-1 in their standard form, which is suitable for escape routes and public buildings in most member states. Both also offer a non-combustible option where a project mandates A2: Troldtekt A2 on their side, and on ours the Sonablock FireSafe series, classified A2-s1,d0 in accordance with EN 13168:2012+A1:2015, with very limited combustibility, minimal smoke production and no flaming droplets. FireSafe is available across all formats and thicknesses in the range. It is not listed on the website yet, so ask through the contact form and we will send the classification documents.

Both carry CE, an EPD and PEFC chain of custody. For specification, the documentation pack matters more than the logo: Sonablock supplies CE, EPD (EPD-IES-0031288), fire and acoustic certificates on request.

How do Troldtekt and Sonablock compare on sourcing and price?

The biggest practical difference is commercial. Troldtekt is typically specified through distributors and project quotes. Sonablock, via Wall Panels Pro, shows transparent per-panel pricing online, offers a project calculator to size an order yourself, ships across the EU on pallets and arranges FCL/LCL container freight worldwide. Container-load orders are project-priced, below standard retail per square metre.

Which should you choose?

If a project already specifies Troldtekt by name and the client requires that exact brand, stay with it. If you need equivalent WWCB performance with transparent pricing, self-service sizing and fast EU delivery, Sonablock is a direct, like-for-like alternative, including where an A2 classification is mandated. Match thickness, fire class and the acoustic build-up to your spec and request samples before ordering.

Next steps

Use the Sonablock project calculator, explore the Sonablock range, or contact us for samples, documentation and project pricing.