Protecting your artwork
Besides temperature and illumination, air humidity is also crucial for the correct presentation and conservation of artwork. Materials such as the primer, barrier, paint, and protective layers expand or shrink when the temperature or air humidity changes. These processes place a burden on the paint materials and may damage them in cases of prolonged exposure.
Sections of the paint might even peel off if the material moves too much. Dust may also collects in cracks. In addition, oxidation of the canvas speeds up due to greater exposure to air and therefore to oxygen. If you are concerned about preserving your artwork, you should maintain a relative humidity of 55 to 60 percent for paintings.