The answer to 'how long does roof installation last' is that a properly installed roof can last between 20-50 years, depending on the roofing material used. Asphalt shingle roofs typically last 20-25 years, while metal, tile, and slate roofs can last 40-50 years with proper maintenance. The lifespan of a roof depends on factors like the quality of the materials, the skill of the installation, and how well the roof is maintained over time.
Regular inspections and timely repairs are essential to maximizing the lifespan of a roof. Homeowners should have their roof inspected by a professional roofing contractor every 1-2 years to identify and address any issues before they become major problems.