Editing Whitewash (section)

===Additives===
Additives traditionally used include [[water glass]], [[animal glue|glue]], [[egg white]], [[Portland cement]], [[salt]], [[soap]], [[milk]], [[flour]], molasses, alum, and [[soil]].

Whitewash is sometimes coloured with [[earth (chemistry)|earth]]s to achieve colours spanning the range of [[white|broken white]], [[Cream (colour)|cream]], [[yellow]] and a range of [[brown]]s.

The [[Bluing (fabric)|blue laundry dye]] (such as Reckitt's "Dolly Blue" in the UK, Ireland and Australia, Loulaki in Greece, or [[Mrs. Stewart's Bluing]] in North America), formerly widely used to give a bright tinge to boiled white textiles, was a common 19th century addition.

Historically, pig's [[blood]] was added to give the colour [[Suffolk#Suffolk Pink|Suffolk pink]], a colour still widely used on house exteriors in some areas of the UK. If animal blood is applied excessively, its iron oxide can compromise the lime binder's strength.

[[Pozzolan]]ic materials are occasionally added to give a much harder wearing paint finish. This addition creates a short open time and therefore requires timely application of the altered paint.

[[Linseed oil]] is sometimes added (typically 0.5-2%) to improve adhesion on difficult surfaces.

[[Cement]] addition makes a harder wearing paint in [[white]] or [[grey]]. Open time is short, so this is added at point of use. Cement restricts the breathable aspects of the limewash and is inadvisable for preserved historic buildings.

Dilute [[glue]]s improve paint toughness.

[[Wheat flour]] has been used as a strength enhancing binder. [[Salt]] is often added to prevent [[Mold (fungus)|mold]].