What are the different kinds of glass?

With the exception of oils and some posters, it generally is desirable to protect your artwork from dust, insects, humidity, and sunlight, with glass or Plexiglas. Frames & Images offers six options: 1. Regular Clear Glass This is by far the most popular material. It allows a clear view of the artwork but it is prone to glare, shields about one half of the ultraviolet light, and like all glass, it can shatter. 2. Glare-free Glass Glare-free glass uses an etching in the surface to reduce the level of reflected light. While cutting down on glare, it also distorts the viewing of the art. Whether or not this tradeoff is worth while depends on the light situation in the room and the level of detail in the artwork. Glare-free glass costs more than regular glass. 3. Plexiglas Plexiglas really isn't glass, it's a high quality plastic. It is light weight and shatter proof but it is susceptible to scratching and in some cases, warping. It costs more than regular glass. 4. Conservation Glass ...  more