The proper installation of concrete driveways can get a bit tricky sometimes — take the case of a sloping driveway. What you want to avoid is a situation where your concrete driveway is sloping downwards, where the entrance of your garage is located at the bottom of your driveway. Your driveway should be properly oriented so that you will be driving uphill, into the entrance of your garage. This is so that, when it rains or snows, the runoff will flow away, into the street, and not into your garage entrance or the entrance of your home. You didn’t realize that? But professional driveway installers do — and that is a good reason for using them.