Too good to be true? Soundblox Carbstone makes this possible because they 100% Ccircular and be cement-free. With these innovative acoustic blocks, you can cleverly combine all the essential properties—such as circularity, stability, fire resistance, and durability—into a single wall for all indoor and outdoor applications. Thanks to the latest innovation, Soundblox Now available as a ready-to-use and no finishing required prefab wall. This reduces nitrogen emissions at the construction site by up to 70%, while construction costs are reduced to as many as 30% is falling.
Soundblox Carbstone are 100% Circular, cement-free, and CO2-negative because they are manufactured using CO2 instead of cement. In addition to the traditional blocks, they are now also available as ready-to-install prefabricated walls for both indoor and outdoor applications. This smart building system can also be seamlessly combined with standard (compatible) Carbstone facing blocks within the same wall, delivered and installed as a complete unit. Of course, walls made exclusively of standard Carbstone blocks are also available.
These innovative elements offer unmatched acoustics (both sound absorption and sound insulation), maximum fire resistance, and ultimate stability. Not only are you building sustainably, but you also benefit immediately from lightning-fast and exceptionally clean installation with no waste material.

A Soundblox Carbstone wall can achieve a significant reduction in CO₂ emissions. This is because CO₂ is stored within the blocks and is no longer released. Depending on the size of the wall and the chosen block dimensions, the CO₂ reduction can be calculated precisely. After installation, the wall continues to absorb CO₂ from the air, causing it to harden further and increasing its compressive strength. Ideal for industrial applications. This technology represents a revolutionary step toward future-proof, CO₂-neutral, and emission-free construction.
A wall made of Soundblox Carbstone greatly improves the score on the BREEAM-NL and GPR Gebouw assessments. These CO2-negative blocks also contribute significantly to lowering the MPG score. With the dramatic reduction in nitrogen and particulate matter emissions at the construction site, the likelihood that the AERIUS calculation will remain below the critical thresholds increases, allowing for faster approval of an environmental permit.
By utilizing this new innovation—the Soundblox Carbstone prefabricated wall—we are actively contributing to the climate transition, in which cement-free and CO₂-neutral construction will ultimately become the norm.