One of the key components of a weather-resistant home is a solid roofing system. It is, after all, your first line of defense against hail, wind, debris and other elements. But like the rest of your home’s exterior, it is bound to suffer extensive damage over time. Even after doing your part in keeping it in good condition through preventive maintenance, your roof will start showing signs of deterioration. Although some forms of damage are repairable, others are beyond saving and must be addressed via a complete replacement. Here’s how you can tell if it’s time to replace your residential roofing system.