WHY DO WE PUT GLASS ON FRAMED WORKS OF ART?
Paper is made from fibers that stick together because of the starch inherent in the fibers. Dust can easily imbed itself in between those fibers. When that happens, the starch breaks down and the paper eventually breaks apart. Glass acts as a dust barrier protecting the surface of the paper from the dust that’s in the air. That’s why we need to put glass over paper borne art.