Painting to the water with classification R15 / 90 in a range of masividades from 65 to 300 with a changeable thickness depending on the masividad and the needed R, according to European Norm ENV 2002:13381-4, expressed by an approved laboratory. The action of the heat provokes an increase of the thickness in 100 times his nominal thickness for lump of the movie of applied painting, capable of isolating of the fire the constructive element that we want to protect, interposing a barrier that it increases the time in which the heat manages to affect it of destructive form.