The process of replacing a windshield usually takes about two hours. This includes the time to remove the old windshield, install the new one, and allow the adhesive to cure so it’s safe to drive. However, the total time can vary depending on the vehicle type and the specifics of the job. Also, it is generally recommended to wait another hour or so after the job is done before driving the vehicle, to allow the adhesive to set completely. Please note that you might need to schedule an appointment in advance, which could add to the overall time until the replacement is complete.