Every contractor and subcontractor has to deal with warranty – a claim that something wasn't done right and should be fixed at no cost to the owner. If you haven’t had a warranty claim yet, stand by. It’s going to happen. Nearly all states either require an express (written) warranty or impose an implied (understood) warranty on residential contractors. See my blog post of June 12, 2014.
For owners, warranty is simple. Just complain to the prime contractor. For contractors, warranty can be anything but simple. It’s a blame game. Who’s at fault? The subcontractor? The designer? The material supplier? The inspector? Lawsuits can resolve finger-pointing problems like that. Join everyone on the job as a defendant and let the jury decide.