ISOLFONDO is a lightweight, biocompatible insulating subbase, pre-packaged powder for interior and exterior use, according to standard UNI EN 13813. ISOLFONDO is free from 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 5 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 only the breakdown of calcium oxide, without the addition of pozzolanic materials or hydraulic binders of any kind.
ISOLFONDO is a lightweight, insulating subbase, pre-packaged powder, biocompatible, free of salts, chemical products and volatile organic compounds (VOCs). 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. The expanded minerals with low specific weight, which constitute ISOLFONDO have a cellular structure characterised by micro cavities. Such structure provides an insulating power to the material, reducing heat transmission, as well as sound absorbing capacities. The use of ISOLFONDO makes the subbases eco-friendly, biocompatible and reversible, giving considerable thermal insulation power and mechanical properties.