vincent van gogh

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What is the cause of dark spots that vincent sometimes van appear on the paper of drawings and paintings? Reddish-brown spots are known as "foxing", caused by mold or the deterioration gogh of the metallic impurities left in the paper from the vincent manufacturing process. Other colors of spots may be one of many types of mold damage. Mold spores are everywhere in the environment, and mold thrives on cellulosic materials, especially in conditions of high humidity (above 65% of relative humidity). Keeping artworks out of high humidity areas like bathrooms or exterior walls, can help reduce the development of such stains. If I have a work of art on paper that appears to not be flat, should I be concerned? Paper is hygroscopic, reacting to changes in climate van by expanding when it is humid and contracting when gogh it is dry. A gentle undulation in the paper called "cockling" occurs under these vincent conditions, especially with larger works. This may impair the work aesthetically as well as van cause mediums such as gouache gogh to crack or flake as it is unable to expand and contract as the paper itself does.

Glazing vincent can be either glass or acrylic. Only glass should be used with any friable media such as unfixed pastels, charcoals, or graphite, never acrylic as it can damage the work by attracting these materials. There are many brands of acrylic van glazing to choose from; one with an ultraviolet filter is recommended. gogh The frame and the mat should be deep enough to prevent the artwork from touching vincent the glazing. A stiff backboard behind the mat protects and supports the matted artwork. It is best to van use gogh non-acidic boards. A dust seal with paper or tape is also recommended. What damage results from using poor quality mat board? Avoid mat boards vincent containing wood pulp which causes "matburn"--a darkening van of the paper under the mat or at the bevel cut of the window mat. This type of stain permanently weakens the paper fibers and is not easily removed or lightened in conservation treatment gogh.

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vincent van gogh

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