We always get asked why a mount is needed, and the answer is simple – to keep your precious art away from the glass!
As temperatures change in a room, tiny amounts of condensation (so small that you probably won’t even see it) form on the inside of the glass. If your print has no mount, it is sitting right up against this moisture, and will, over time, cause the paper to wrinkle and discolour. By adding a mount to the equation, the paper is held away from the glass, preventing this from happening. Over time, the mount may become discoloured, but it’s generally cheaper to replace the mount than it is to replace artwork.