The answer to 'how often to replace roof inspection' is that most roofs should be inspected at least once a year, and potentially replaced every 15-30 years depending on the roof type and local climate conditions. Regular roof inspections are essential to identify any damage or wear that may require repair or replacement before more serious issues develop.
During a roof inspection, a professional roofer will closely examine the roof's shingles, flashing, gutters, and other components to assess the overall condition. They can then provide recommendations on whether repairs are needed or if it's time to consider a full roof replacement.