First of all, the boards should be staggered so that the “butt joints” in one row do not match up with the “butt joints” in the next row. Next, it’s important to install horizontally rather than vertically. Next, drywall sheets must always span doors and windows: this fortifies the wall or ceiling strong and minimizes potential for cracks.
Think about it: a taped joint inevitably creates a small section that is weaker than the surrounding drywall. So if the butt joints are aligned, then it increases the length of each of these weak points. If a crack starts along an improperly installed joint, it will meet little resistance until it reaches the other end. This is the cause of one of the worst eyesores in a home next to water stains.
Staggering butt joints is clearly a more difficult and time-consuming method for installing drywall. This practice requires more measuring and cutting and it creates more T-shaped seams, which are more difficult to finish than non-staggered joints.
In the end, you will get what you pay for. Inexperienced contractors will quote you a low price because they need your work, and that's the only way they are likely to be hired. Call the professionals: at Fine Finish Wall Systems we are classically trained master plasterers who take pride in our work.