The Care of Fine Art - Temperature and Humidity

The temperature and relative humidity of the room in which he art is displayed is very important. Ideally the humidity should be 50% and the temperature 21 deg C (70 deg F). If temperature and humidity rise and there is little air circulation, the possibility of mold and mildew growth increases.

It is important to maintain a steady temperature throughout the entire year. An air conditioner, dehumidifier or humidifier can be of considerable help. However, if the climate controlling device is turned off at night or on weekdays/holidays, a sufficient change in moisture content of the air can take place causing temporary or permanent damage to your artwork.

Just as you see that pets and plants are properly cared for during an extended absence, so should you care for you valued art. Have the house aired periodically by a friend or neighbor.

Air should be allowed to circulate behind a picture. Spacers or bumpers placed on the two lower corners of a frame will tilt it out a bit from the wall, allowing air circulation.

A small amount of rippling or waving of a print can be expected. However, high humidity causes hygroscopic (moisture absorbing) materials such as paper, canvas and sheepskin, to swell.

If the humidity is excessive, it can cause severe buckling as well as mold growth. Hygroscopic materials shrink when exposed to low humidity, and extremely low humidity over a period of time can damage fibers causing embrittlement. For localized buckling consult your framer.

Do not store or hang artwork in any location that can experience extreme fluctuations in temperature and humidity. That includes attics, basements, damp outside walls, over fireplaces, near heating or air conditioning ducts, by outside doors, under bright lights, or in direct sunlight.

Also, remember that kitchens and bathrooms produce steam and heat, resulting in an unhealthy environment for your valuable works of art.