The most common type of water based paint is emulsion. There are two finishes -
matt or silk and an endless range of colours. It comes as a traditional liquid,
solid (bought in a tray) or as a non-drip jelly.
If walls or ceilings are to be covered, then 2 or 3 coats of the same paint is
sufficient. If the paint is to be applied in a particularly busy area, it is
worth remembering that satin finish is less likely to show finger marks or scuffing.
There are many non-drip paints available, which are particularly sensible to use when
painting ceilings. Some cover in just one coat finishes.
Emulsion can be applied
with a brush, but for larger areas, use a tray and roller to apply the paint.
Emulsions bought in a tray is applied with a roller with no drip and minimal
splattering of paint.
If the surface is particularly rough, then a textured emulsion, containing fine
aggregate can give an attractive finish, covering many imperfections.
If emulsion paint becomes too thick it can be thinned by mixing in a little water.