Rock wool is one of the inorganic insulating materials made of artificial mineral fibres (mineral wool) and is made from the fibres of molten natural stones, which are bound with synthetic resin and to which small amounts of mineral oil are added. The insulating effect is created by the air pockets between the fibres. Rock wool is resistant to rotting, vermin and fungal infestation, is open to diffusion and easy to process. It cannot absorb moisture and loses its insulating effect when it is soaked through. The production of rock wool is very energy-intensive. In addition, it is only recyclable to a limited extent due to the organic additives. Rock wool is one of the most widely used insulation materials in Germany and is available as above-rafter insulation in the form of dimensionally stable insulation boards in thicknesses of 80 - 240 mm.
Source: bauwion
