Second: all the tricks of the trade in regard to "cheating" customers is for hustlers and cheaters and NOT established businesses. At the end of the project the job should come out looking professionally painted as specified in the contract. A selected color that takes multiple coats that was not calculated by the contractor should cost more money. It's not the fault of the painter.
There are permanent features of the home that have their own colors which cannot be changed when painting the exterior of the home but can have a dramatic satisfaction level that is experienced when the painting is completed. Roofing shingles, paving blocks, concrete surfaces, stones and other such features are prime examples of the colors that should be considered when selecting your exterior color scheme for the home. Homeowners can work off of these colors to make a home that looks uniform and luxurious when the exterior painting is complete.
The Lead Renovation, Repair and Painting (RRP) Rule establishes requirements for firms and individuals performing renovations, and affects contractors, property managers, and others who disturb painted surfaces. It applies to work in houses, apartments, and child-occupied facilities (such as schools and day-care centers) built before 1978. It includes pre-renovation education requirements as well as training, firm certification, and work practice requirements.