Does All Watercolor Paper Need To Be Stretched?

Does All Watercolor Paper Need To Be Stretched? Does all watercolor paper need to be stretched? Do I Have To Stretch Watercolour Paper? If you don’t want to Stretch Watercolour Paper, you don’t have too. It is usually only necessary to Stretch Watercolour Paper that is 140lbs / 300gsm or less. The heavier the paper,