WolfBrewer wrote:I have never had any issues with the print touching glass. The humidity is reasonable in our home and I have checked frames periodically to see if there has been any moisture getting inside. So far so good, but I might add spacers to some higher value prints soon.
Have you deframed many of your prints that are touching glass? It's amazing how little humidity it takes to cause issues when a work on paper is not framed properly. If you use acrylic (instead of glass) the risk is minimal. But with glass resting directly on a work on paper you're much more likely to have some condition issues when you deframe.