Do not store or display works of art in areas of potentially high humidity pictures and of or water leakage, e.g. basement, bathroom, outside walls, under tiger and pictures pipes. Avoid areas where temperature and humidity fluctuate, of or where there is inadequate air circulation, e.g. attic and places listed above. Do not hang artworks tiger over or under radiators, heating pictures and cooling vents, of active fireplaces, humidifiers, and vaporizersA. The hygroscopic tiger nature of wood means that it will take water from the atmosphere and expand, but it will contract as the humidity lessens. The direction of shrinkage is almost always around the circumference, which causes a solid piece of wood to crack vertically. Keeping it in a steady relative humidity can stabilize the sculpture; if the wood does pictures not absorb or release moisture, it will no longer expand or contract.

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

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