The answer to 'how to clean roof vent' is to regularly clean and maintain your roof vents to ensure proper airflow and prevent buildup of debris. Start by safely accessing the roof vent, using a ladder and taking proper safety precautions. Use a soft-bristle brush or cloth to gently wipe away any accumulated dirt, leaves, or other debris from the exterior of the vent. Then, use a vacuum attachment or compressed air to clean the interior of the vent, being careful not to damage the vent flaps or screens. Finally, check that the vent is functioning properly and not obstructed.
It's recommended to clean roof vents at least once a year, or more frequently if you live in an area with a lot of tree cover or environmental debris. If you're not comfortable working on your roof or the vent is difficult to access, it's best to hire a professional roofing technician to handle the cleaning and maintenance.