下塗り

1. Origins, structure, and basic meaning

• Structure: 下塗り, read したぬり, combines underlayer 下 with coating 塗り as the name of a painting stage.
• Basic usage: It denotes the preparatory coat applied before the final color or finish, as in 壁に下塗りをする.

2. Common pitfalls and similar expressions

• Scope and context
  • It differs in order and role from the finish coat 上塗り, helping later layers adhere and show color.