Roof replacement is the process of removing an old or damaged roof and installing a new one in its place. This typically involves removing the existing roofing materials, inspecting the underlying structure for any damage or issues, and then installing new roofing materials such as shingles, tiles, or metal sheets. Roof replacement is often necessary when a roof is old, worn out, leaking, or damaged beyond repair. It helps to maintain the structural integrity of a building and protect it from weather damage.