The answer to 'how to maintain roof vent' is to regularly inspect and clean your roof vents to ensure proper airflow and prevent issues. This includes removing any debris or obstructions, checking for damage, and ensuring the vent is functioning properly.
Roof vents should be inspected at least once a year, typically in the spring or fall. You can do this yourself, but it's important to take safety precautions when working on your roof. If you're not comfortable with DIY roof maintenance, it's best to hire a professional roofing contractor to handle the job.