Hill Top Construction Solutions - Expert Roof Installer Most homeowners don’t replace roofs often—so it’s completely reasonable to assume that all  roof replacements are basically the same. They’re not. If you live in Union County, NJ, the difference between a proper roof replacement  and a cheap one  usually comes down to what you don’t  see once the job is finished. Here’s exactly what should be included in a quality roof replacement—and what low-bid contractors often skip