Replacing a roof starts with tearing off old shingles and inspecting the deck for rot or damage. Then, new underlayment is installed to protect against leaks, followed by the chosen shingles or tiles, often asphalt or metal. Flashing around vents and chimneys is replaced to seal edges, and ridge caps finish the job. The whole process can take a few days to a week, depending on the roof size and weather. It’s dusty work, but a new roof transforms the home’s look and keeps it dry for decades. roof replacement process 8