Nothing is more important than preparing the surface properly and then applying the right product to your project.

The biggest mistake I see homeowners make is cutting corners on material purchases.  While it may seem appealing at the time, doing so can dramatically reduce the life expectancy of the paint job.  It is not uncommon to see jobs last half as long as they should have had a quality product been used.  In the long run, it is much more cost effective to do it right the first time.