Roof decking, also known as sheathing, is a critical component of any roofing system. It acts as the foundation for roofing materials and provides essential structural support. When the decking becomes damaged, the overall integrity of the roof is compromised—leading to problems like leaks, mold growth, and even structural failure. Understanding why it’s better to replace damaged decking rather than repair it can save homeowners from costly repairs and long-term issues.