OPUS SIGNINUM is a biocompatible mortar, to be prepared on site, free of cement or compounds belonging to the clinker group, consisting of opus signinum obtained from the crushing of low temperature cooked clay (solid bricks, tiles) with continuous grain size curve from 0 to 4 mm OPUS SIGNINUM 0-4 TCS and ST-ASTIER Pure Natural Hydraulic Lime of NHL 3.5 according to the standard UNI EN 459-1 white, produced by baking at temperatures below 1250°C of siliceous limestone and reduced in powder by the calcium oxide only, without the addition of pozzolanic materials or hydraulic binders any kind.
OPUS SIGNINUM It is a Dehumidifying plaster, to be prepared on site, biocompatible, free of salts, chemicals and volatile organic compounds (VOC). These features, combined with the total mineral nature of the components, guarantee the purity, non-toxicity, non-harmfulness and the total recyclability of the product in full respect for man and the environment. Selected aggregates and pure hydraulic lime NHL 3.5, have a natural porous structure. This structure gives the material a strong capability of dehumidification and breathability, facilitating the necessary exchange of vapour between the inner and outer surface. The OPUS SIGNINUM features allow, with the laying of a single product, to fulfil the classic protective plaster functions as well as aesthetic finishes.