Return to the top. Mold Mold is a fungus which produces furry appearing growth on the surface of organic matter. Mold and mildew weakens paper and leaves permanent stains. Mold and mildew are more likely to grow where air circulation and light are lacking. Mold infestations can be very disasterous to a collection.
Prevention is the key to saving collections from infestations of mold and mildew.
Control of the environment is essential. In Museum Collections , National Park Service , Conserve O Gram 3-6. Return to the top. Light High light levels are damaging to paper and extremely bad for film. Deterioration of materials due to exposure to light is a photochemical process that occurs at a more rapid rate when the energy input is increased.