Advanteges of Laminating a Print
A lamination with an U.V. protector doubles the life expectency of a print.
The discoloration is produced by both direct and indirect light. But it is really only recommended to laminate an impression when it is going to be used outdoors and when it is going to be exposed for a longer time than a couple of years, not so much when the printing is destined to the interior. In this article you can read more about the durability of colors.