The Framers Forum

Quick question - If Plexiglas is used directly against a poster, will it cause any damage to the poster in the long run? Is it any different if Plexiglas is used against a photograph, watercolour or acrylic painting?

Thanks.

It's not the material so much as it's capacity for creating condensation. Plastic is less likely to form condensation than
glass. Having framed paper-borne items in a place where the temperature and humidity fluctuate wildly is never a good idea
but in these circumstances plastic glazing will fare better.
It's not good to have photos or art done using acrylic paints against any form of glazing. Don't ask....

Thanks prospero, that's good to know