A new painting in good condition will begin to deteriorate as a result of time alone. Cracks appear as the paint films dry and shrink. As the painting continues to age, both the paint film and priming lose flexibility and become brittle. Expansion and contraction of the fabric support, due to absorption and release of moisture from the air, adds further strain which leads to crack formation. Cracks of a very similar nature can also be caused by mechanical means, such as pressure, large or small, on either the front or back of the painting.
Some pigments are naturally sensitive to ultraviolet light, acids or bases.
Exposure of these sensitive pigments to any of these conditions will cause them to fade. The lifetime of a painting depends a great deal upon its care and handling. How to Keep Your Painting Looking Its Best Beyond conscientious care and careful handling of your paintings, paintings conservators can aid in preserving your paintings for the greatest time. Paintings conservators are professionally trained individuals with years of experience. You should solicit the advice or services of a conservator any time that you have questions or concerns regarding a painting.