What are the main components and functions of putty?

Spackle, a type of decorative building material, primarily consists of talcum powder and glue. The newly purchased bare house's surface layer of white—spackle—usually boasts a brightness above 90 and a fineness above 330.

Spackle is a base material used for wall repairs and leveling, providing a solid foundation for subsequent decorative steps (painting or wallpapering). It is categorized into two types: interior and exterior. Exterior spackle needs to withstand wind and sun exposure, hence it has a higher adhesive property and strength, but a slightly lower environmental index. Interior spackle boasts a better overall index, is healthy and environmentally friendly, which is why it's not suitable for exterior use and vice versa. Typically, spackle is made from gypsum or cement, which makes the surface rough and easier to bond firmly. However, during application, it is necessary to apply a primer on the base to seal it and enhance the wall's adhesion, allowing the spackle to bond better with the substrate.