How To Stretch Watercolor Paper With Tape. Blot away any excess paper on the paper surface with a clean towel or sponge and leave to dry flat overnight. If the paper is too wet, blot it with a clean sponge and if the tape is too dry, simply run a damp sponge over it.
It is a chore to do this, but there will be no more valleys collecting the paint and no more buckles. Removing a gummed tape on an already stretch watercolor paper is most of the times horrifying. Paper can be stretched up to a size of approximately 1.5m x 2.5m but if you go beyond that, the tension in the paper will be too strong.
Allow 1″ for gummed paper tape all the way round your paper when cutting to size.
How do you tape watercolor paper mounting or taping watercolor paper is a breeze if you have your scissors, a ruler, and tape with you. You can do it with masking tape and be ready to paint 15 minutes! That is why some artist uses staples as an alternative to. Simply rewet your paper for a minute or two.