Some paint jobs may require an undercoat of paint before the topcoat can be applied. This is usually necessary when painting a dark color over a light one, or when painting a glossy surface that needs to be dulled down first. The undercoat of paint acts as a barrier between the two colors and helps to prevent bleeding through of the top color. It also provides a surface for the topcoat to adhere to more easily.
I'm Joost Nusselder, the founder of Tools Doctor, content marketer, and dad. I love trying out new equipment, and together with my team I've been creating in-depth blog articles since 2016 to help loyal readers with tools & crafting tips.