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Fresco painting

visual arts

Fresco painting, method of painting usually on walls by applying water-based pigments on either fresh plaster or limewater-soaked surfaces. Fresco painting is an ancient technique that was popular during the Renaissance and briefly revived in the 20th century, especially in Mexico. It is ideal for making murals because it lends itself to a monumental style, is durable, and has a matte surface.

Buon fresco

Buon, or “true,” fresco is the most durable technique and consists of the following process. Three successive coats of specially prepared plaster, sand, and sometimes marble dust are troweled onto a wall. Each of the first two rough coats is applied and then allowed to set (dry and harden). In the meantime, the artist creates a tracing from a full-scale cartoon (preparatory drawing) of the image to be painted.

The final, smooth coat (intonaco) of plaster is then troweled onto as much of the wall as can be painted in one session. The boundaries of this area are confined carefully along contour lines, so that the edges, or joints, of each successive section of fresh plastering are imperceptible. These sections are called giornate, a “day’s work.” The tracing is then held against the fresh intonaco and lined up carefully with the adjacent sections of painted wall, and its pertinent contours and interior lines are traced onto the fresh plaster; this faint but accurate drawing serves as a guide for painting the image in color.

Édouard Manet: Olympia
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Painting: Fresco

A correctly prepared intonaco will hold its moisture for many hours. When the painter dilutes the pigments with water and applies them with brushstrokes to the plaster, the colors are imbibed into the surface, and as the wall dries and sets, the pigment particles become bound or cemented along with the sand particles. This gives the colors great permanence and resistance to aging, since they are an integral part of the wall surface, rather than a superimposed layer of paint on it. The medium of fresco makes great demands on a painter’s technical skill, since he or she must work fast (while the plaster is wet) but cannot correct mistakes by overpainting; this must be done on a fresh coat of plaster or by using the secco method.

Fresco secco

Fresco secco (“dry fresco”) is a process that dispenses with the complex preparation of the wall with wet plaster. Instead, dry, finished walls are soaked with limewater and painted while wet. The colors do not penetrate into the plaster but form a surface film, like any other paint. Secco is useful for detailed painting and for retouching true fresco.

Brief history

The origins of fresco painting are unknown, but it was used as early as the Minoan civilization (at Knossos on Crete, for example) and by the ancient Romans (at Pompeii). The Italian Renaissance was the great period of fresco painting, as seen in the works of Cimabue, Giotto, Masaccio, Fra Angelico, Correggio—who favored the sotto in su (“from below to above”) technique—and many other painters from the late 13th to the mid-16th century. Michelangelo’s paintings in the Sistine Chapel and Raphael’s Stanza murals in the Vatican are the most famous of all frescoes. By the mid-16th century, however, the use of fresco had largely been supplanted by oil painting. The technique was briefly revived in the 20th century by Diego Rivera and other Mexican muralists as well as Francesco Clemente.

The Editors of Encyclopaedia BritannicaThis article was most recently revised and updated by Alicja Zelazko.