I have several pictures which over a short period of time (within 1-2 years) have gotten "wavy" in their frames!. The pictures aren't completely flat anymore!. Most are 8X10 photos and the other is just a framed print!. They are all behind glass with cardboard behind and seem very "matted in" to me!. Why is this happening!? I live in the south so I suppose it could be humidity!. Is there a way I can spray fabric adhesive on the backs to attach to the cardboard or would that ruin the photographs!? I have Googled my fingers to the bone and cannot seem to find an article or solution to this!. Thank you in advance for any input!.
P!.S!. They are not located in a bathroom where steam would be!.Www@QuestionHome@Com