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3-tab shingles are a more basic, economical option, while architectural shingles are thicker and have a more dimensional appearance. Architectural shingles also tend to be more durable and have a longer lifespan.
Common causes of roof leaks include damaged or missing shingles, clogged gutters, and flashing that has come loose or is damaged.
The expected lifespan of a metal roof can vary depending on the specific type of metal and the quality of the installation, but it can range from 40 to 70 years.