Scumbling is a method used when painting that I have recently taken up as part of my repertoire for gaining depth and unity within a painting.
It could be compared to glazing, as the use of transparent and semi-transparent paints is involved. The difference however, lies in laying down a darker background, then adding a transparent white, waiting for it to dry, and then ‘scumbling over darker transparent colours to either unite the painting with a similar tone or temperature, or to create a specific colour impression.
One of my best examples of scumbling was used in a very large work over 4 canvasses. I wanted to give the painting depth and pull it together with the use of scumbling with lighter and darker alternate cool and warm tones. This also gave the impression of the metal objects in the painting, which I was very pleased about.
I use a mix of Liquin and Linseed oil to get a little more drying time, but if you want one layer to dry very quickly, use the Liquin on its own. Liquin dries fast, sometimes in a matter of hours, so you need to be sure about what you are doing.
If you want to watch a short video about this method of painting look at:
Odds & Sods. 2015. Oil on 4 90x90cm canvasses. © Janice Mills.