CLIMATHERM M is a Biocompatible Eco Plastering, Insulating, Dehumidifying pre-packaged powder for interior and exterior use, according to standard UNI EN 998-1. CLIMATHERM M is totally free of cement or compounds belonging to the clinker group. It consists of a mixture of pure mineral sands, expanded with low specific weight, screened with continuous grain size arc from 0 to 4 mm. The only binder present is ST-ASTIER Pure Natural Hydraulic Lime NHL 5 according to UNI EN 459-1 standard. The lime NHL 5, white, is produced by baking siliceous limestones at temperatures below 1250°C and reduced in powder by calcium oxide only, without the addition of pozzolanic materials or hydraulic binders of any kind.