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High Humidity reduces mechanical damage such as brittle paint but raises the risks of biological organisms, e.g. white efflorescence and green-to-black stains on a panel painting. [12] High Humidity also raises the risks of curving or warping of the wood over time, forcing the paint to flake off.
Water damage may result in mold formations, a type of pest damage, on the canvas and pigment layers. It may also cause the canvas or framing supports to weaken and become flimsy resulting in tears from physical forces. [5] Ripples, waves, and undulations are also a common form of water damage.
There is solvent-based and water-based. Solvent-based acrylic paints are soluble in mineral spirits, and water-based acrylic paints are water-soluble. Acrylic paint differs from oil paint in both its quick drying time, and how the paint dries. Acrylic paint dries in as little as thirty minutes, and dries by the evaporation of the solvent or ...
A painting's natural aging process, as well as environmental factors, can require intervention by a paintings conservator to restore the work. Reasons for restoration may include water damage, tearing, flaking, and a weakened canvas. The primary goal of a paintings conservator conducting a restoration is to ensure the work is stable.
Fresco is a technique of mural painting in which pigment is applied to freshly-laid or wet lime plaster. Water acts as a type of binding agent that allows the pigment to merge with the plaster, and once the plaster sets the painting becomes an integral part of the wall.
The two common gilding processes are water gilding and oil gilding. The difference in the two processes is in adhesive coating base. Water gilding is the traditional, more difficult method, which must be cleaned using a mineral spirit or denatured alcohol. Oil gilding can be cleaned with a mild water-based soap solution. [12]