Final answer:
When stained or odors persist after painted surfaces are cleaned, the surface should be primed before repainting.
Step-by-step explanation:
When stained or odors persist after painted surfaces are cleaned, the surface should be primed before repainting.
Priming involves applying a layer of primer, which is a type of paint specifically designed to improve the adhesion of the topcoat and cover any stains or odors. The primer creates a smooth and even surface for the new paint to adhere to.
For example, if there are water stains on a wall, cleaning alone may not completely remove the stains. By priming the surface, the primer will seal the stains and prevent them from bleeding through the new paint.