The answer to 'how often to replace drip edge' is that drip edge should generally be replaced every 20-25 years, or whenever it becomes damaged, corroded, or no longer functions properly. Drip edge is an essential roofing component that helps direct water away from the fascia board and prevent water damage to the roof and home.
Over time, drip edge can become bent, rusted, or pull away from the roof, compromising its ability to effectively channel water. Regular inspections and prompt replacement when needed will help ensure your roof continues to perform as intended and protect your home from water intrusion.