Pros can paint not only your walls and ceilings, but also your trim and baseboards, and you can learn a few helpful tips from them along the way.
Painting tips and risk management
A sound risk management strategy is to hire painters located close to you and within the area they service; for example, a house painting service in Montgomery County can not only give you an accurate estimate, but also show you a few tricks of the trade. You can learn that it is always best to start with the ceiling rather than the walls to prevent smudging and otherwise ruining your work, or that, to make your job easier, you should paint across the width of the ceiling, moving your arm back and forth, rather than left to right. When painting the door and window frames, use an angled brush from top down to keep the work clean.
The outside of the house must be repainted at the first sign of cracks and peels, before the problem and the costs get much bigger. And use both a roller (for long, larger surfaces) and a paintbrush (for smaller, narrow ones) if you want to paint the exterior walls faster.
One final point that is often overlooked is that the painters should be licensed, insured and bonded to make sure their job meets industry standards, and avoid scams and property damage, as well as being asked for more money along the way. Bonded painters are preferable, because they carry a crimes bond coverage for those cases when something goes missing from your premises while they were there.