Description : Preserving Books: What cover should I use for this? How do I prevent warping?
Last Answer : answer:Ideally the materials need to be kept protected from three things: 1. Sunlight 2. Humidity (and much higher humidity or moistness, resulting in mildew or mold) 3. Oxygen in the air ... . The warping is definitely humidity, though. That's a much more realistic concern than temperature alone.