This European Standard specifies a method for determining the liquid water permeability of coatings, coating systems and related products, intended for exterior masonry and classification according to EN 1062-1. The method is applicable to coatings and coating systems on porous substrates such as brick, concrete and renderings. A liquid water permeability w of more than 0,5 kg/(m² x h0,5) will not be accurately quantified by the test method described in this standard.