I'm an architect and my firm routinely specifies interior finishes for projects so I thought I'd contribute a professional's perspective on the issue of how many coats of paint are deemed "acceptable". The fact of the matter is the average consumer usually isn't a paint expert and can't be expected to know about all the factors that impact coverage. That knowledge is considered "means and methods" and in a court of law, the responsibility lies with the painter or general contractor, not the consumer. What the consumer should be concerned about is the final result-does it look good and is it what you expected? The simplest way to communicate this to your painter is to stipule in your written agreement that the number of coats will be "as required to cover". That way all the guess work about what kind of primer, how many coats, how color affects the scope of work, etc., is removed from the consumer's responsibility and resides where it belongs-with the professional. In the contract that's why retention is always a good idea-typically 10% is withheld from payment until the job is completed to the satisfaction of the customer. Of course in return you as the customer have to be reasonable about what constitutes a completed job. Just my $.02.
Painting interior walls is a task better accomplished with foam rollers, because they are easy to use and can evenly cover large surface areas quickly. Foam rollers and brushes should never be overloaded with paint, as it can create drips, uneven coverage and can take longer to dry. It’s easy to get frustrated when the paint is fresh and does not look like a photo from the paint catalog, but remember: that’s something that usually happens after the second coat dries.
Painting contractors work in the property maintenance sector. Depending on their skills and resources, they might specialize in painting different types of buildings, including houses and apartments, or commercial properties, such as offices, factories or retail outlets. Some contractors work directly for property owners; others find work through real estate firms, rental agents and property maintenance companies.