The content of this article provides interesting facts and information about the Roman Fresco.
Fresco, or water-color, on fresh plaster, was used for coloring walls, which were divided into compartments or panels. The composition of the stucco, and the method of preparing the walls for painting, is described by the ancient writers: "They first covered the walls with a layer of ordinary plaster, over which, when dry, were successively added three other layers of a finer quality, mixed with sand. Above these were placed three layers of a composition of chalk and marble-dust, the upper one being laid on before the under one was dry; by which process the different layers were so bound together that the whole mass formed one beautiful and solid slab, resembling marble, and was capable of being detached from the wall and transported in a wooden frame to any distance. The colors were applied when the composition was still wet. The fresco wall, when painted, was covered with an encaustic varnish, both to heighten the color and to preserve it from the effects of the sun or the weather; but this process required so much care, and was attended with so much expense, that it was used only in the better houses and palaces."