Cheap Joe's Art Stuff offers a wide selection of Watercolor Blocks from your favorite brands, such as Arches, Canson, Daler-Rowney Langton Prestige, Kilimanjaro, and Saunders Waterford.
A watercolor block is a stack of watercolor paper that is attached together. The sheets of fine art paper are trimmed to some uniform size and then stacked upon each other. That stack of art paper is then attached to a backing board with a padding glue. This glue is applied to all four sides of the paper. If the glue is applied to just one side, that is called a watercolor pad. Because all four sides of the paper are glued into place, you don’t ever have to stretch your watercolor paper prior to painting. Just paint and go! If you are painting on a watercolor block made of 140lb. watercolor paper then you should wait until your painting dries completely before removing it from the block, otherwise the paper may buckle. If you are using a watercolor block that is made of 300 lb. watercolor paper, you can remove your painting immediately and set aside to dry, since the heavier watercolor paper will not buckle when wet.