Rag rolling - and its 'sister' effect of bag graining - also involve a stippling action. But, unlike stippling, these techniques are used to remove paint from a surface rather than add it. Most often it is a darker colour laid over a lighter base colour, and here the rolled or bagged colour will be the dominant colour in the scheme. While the topcoat of colour is still wet, a piece of cloth, folded into quarters and rolled into a 'sausage', is rolled upwards from the base of the wall. As it picks up paint, the rolled cloth leaves behind a pattern in the wet paint producing a delicately textured effect.
A similar but more 'random' and irregular effect can be achieved by using a plastic carrier bag half-filled with loose rags dabbed onto the wet paint. While rag rolling is a simple technique, it can get a little messy, and you will need plenty of cloths and carrier bags as they will soon become over-loaded with wet paint picked up from the surface.
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