The steps involved in the exterior painting are:

1. Preparation: Clean the surface of the house/building, repair any damage, and caulk any cracks or gaps.

2. Priming: Apply oil-based primer to the surface to ensure proper adhesion and to help the paint last longer.

3. Painting: Paint the house/building using brushes, rollers, or spray equipment. Multiple coats may be required for a uniform appearance.

4. Clean up: Clean up and dispose of the paint waste properly.