Stone wool on hard boards Fibrangeo BP-ETICSplus is a natural inorganic fibrous thermal insulation material produced industrially by melting and fibrillation of rocks, according to the European Standard EN 13162. They are specially designed for thermal insulation, fire protection and sound insulation, in the Complex External Thermal Insulation Systems. It is applied to exterior walls and pilot ceilings while they are completed with the special FibranGeo CAP stone wool washers for thermal facade without thermal bridges.