If your parking lot needs to be repaved and you've decided not to use a paving contractor for the project, rethink that decision. Repaving your asphalt parking lot may seem like something you can tackle as a do-it-yourself project, but that's not the case. Here are just four of the reasons you need to hire a contractor for your repaving project.  Avoid Accidents Repaving your parking lot is a major endeavor; one that shouldn't be undertaken by someone inexperienced.