The bluesmart® system is the latest invention of Geolyth. It consists of light weight perlites whose surfaces are closed [hydrophobic!] and a cement matrix as a binding agent. The product itself is unique and relies on a patented mixture. Not only is it incombustible [A1] and noise cancelling, but also open to diffusion and properly insulating [thermal conductivity: 0,054 W/mK]. The density can be adjusted to the form of usage. However, main advantages are the compressive strength and the ability to harden by its own. No autoclave process required!