Schmincke transparent watercolour ground allows you to use watercolour, traditionally confined to paper, on a whole host of new surfaces such as canvas, painting boards, wood as well as on acrylic paintings in which the surface remains visible.Schmincke watercolour ground, forms a fine textured, light resistant, non-aging, even, matt, elastic film that can be over painted (or tinted beforehand) with watercolours, gouache or acrylic colours.