Signs that your roof may need replacement include missing or curling shingles, leaks, water stains on ceilings or walls, and visible signs of aging or wear.
It's recommended to have your roof inspected at least once a year, preferably in the spring or fall, to catch any issues early and prevent costly damage.
Several factors can affect the lifespan of your shingle roof, including weather conditions, ventilation, maintenance, and the quality of the roofing materials.
A typical asphalt shingle roof can last anywhere from 20 to 30 years, depending on factors such as the quality of the shingles, installation, and climate.