Roof lifespan refers to the expected service life of a roofing system before major repairs or replacement are required. Lifespan varies depending on materials, installation quality, and environmental exposure. In Vancouver’s wet climate, factors such as rainfall, moss growth, and wind exposure can impact longevity. Asphalt shingles may last 20–30 years, while metal roofs can exceed 40–50 years. Proper maintenance and ventilation significantly extend roof lifespan by preventing premature deterioration.
