Hydrophobic coating is intended for the treatment of all types of vertical and sloping mineral surfaces, for instance, bricks, concrete, natural stone, wood, plywood, cement plastering, aerated concrete and asbestos cement with the purpose of creating surfaces that do not absorb water. Hydrophobic coating "Hidrofobs H₂O" repels water, lets water vapours through and protects the surfaces of building materials from the influences of atmospheric water. Protects painted surfaces from fading, reduces heat loss.