ADE RAS is a biocompatible, smoothing adhesive compound, pre-packaged powder for interior and exterior use according to standard UNI EN 998-1. ADE RAS is totally free of cement and compounds belonging to the clinker group. It consists of a mixture of pure silicate calcareous sands, screened with continuous grain size arc from 0 to 0.6 mm. The only binder present is ST-ASTIER Pure Natural Hydraulic Lime NHL 5 according to standard UNI EN 459-1. 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. Natural additives give the product excellent applicability,smoothability and adhesion to the substrate.