whitewash

In painting and construction, "whitewash" refers to a type of inexpensive paint made from a mixture of slaked lime (calcium hydroxide) and water, often with added chalk, salt, or other ingredients. It is traditionally used to coat walls, fences, barns, and other surfaces, especially in rural or agricultural settings.

Key Characteristics of Whitewash:

• Appearance: Dries to a matte, chalky white finish.
• Breathability: Allows moisture to pass through, making it suitable for older buildings.
• Antibacterial Properties: Lime has natural disinfectant qualities, which is why whitewash was historically used in dairies, barns, and cellars.
• Eco-Friendly: Made from natural materials and free from harmful chemicals.
• Temporary Finish: Tends to wear off over time and may need reapplication.

Common Uses in Australia:

• Heritage buildings and restorations.
• Decorative finishes for a rustic or vintage look.
• Agricultural structures like sheds and stables.

Note: In a non-painting context, "whitewash" can also mean to cover up or gloss over faults or unpleasant facts, but in the painting trade, it specifically refers to the lime-based coating.