Building & Construction Practice Test: Painting, Varnishing, Distempering — Flashcards

Painting, Varnishing, & Distempering topics include: Oil borne paint ingredients, paints types, painting defects, varnishing characteristics, white and color washing.

Painting in construction involves applying a coating of paint or similar materials to a building's surface. The purpose is to improve its aesthetic, protect it from damage, and increase its durability. 

The painting process includes preparing pre-formed material, base coating, drying, overlay coating, and drying. The methods used to do these steps vary based on the different coatings and requirements. 

Here are some types of paints used in construction:

Emulsion paint: A water-based paint that dries and hardens quickly. Emulsion paints are commonly used for interior walls, ceilings, and masonry work.
Enamel paint: Offers durability, good color retention, and alkali resistance.

Varnish is a clear or semi-transparent finish used in construction to protect and enhance the appearance of wood, metal, and other materials. Varnish can:
Protect against wear and tear
Resist damage from UV rays and water
Enhance the aesthetic appeal of surfaces
Bring out the grains of wood
Impart a delicate brilliance to painted surfaces 

Varnish is a blend of resin, drying oil, drier, and volatile solvent. When varnish dries, its solvent portion evaporates, and the remaining constituents oxidize or polymerize to form a durable transparent film.

Distemper is a water-based paint used in construction and building. It's made with the following base materials:
Base: White chalk or whiting
Binder: Glue or casein
Pigments: Coloring pigments
Water: Used as a carrier 

Distemper is also known as cement paint because it can be applied directly to cement walls without any other coating. It's cheaper than paints that use chalk as the base, water as a carrier, and glue as an emulsifying agent. 
Distemper is available in powder form or paste form and should be mixed with hot water before use.