Fresco: Yes, adding water may make the lime paint easier to work with but also has an effect on the color and appearance. Depending on the thickness of the lime paint we suggest diluting about 15 to 30% (until as liquid as buttermilk). Prevent potential differences in color by keeping the ratios equal between multiple cans of paint.
Marrakech Walls: No, unless it’s very dry and thick. In that case adding a little bit of water will make it easier to process. Marrakech Walls is supposed to be thick, but smooth.