In our experience as the roofing contractor Antioch, IL and surrounding areas have counted on since 2005, the vast majority of roofs in the Chicagoland and Milwaukee areas are replaced when they are between 18 and 22 years old. Ultraviolet radiation is the primary cause of roof deterioration, while animals, rain, high winds, and cold weather are secondary factors in roof fatigue. According to reports from BCC Research, roofing replacements account for 94% of North American roofing projects, as patchwork repairs can’t resolve widespread deterioration. If you want to protect your investment, timely replacement with an expert roofing contractor in Antioch, IL is far more effective than repeated repairs.