The answer to 'ridge vent damage' is that a damaged ridge vent can allow water leaks, pests, and poor ventilation in your attic. Common causes include physical damage, improper installation, and wear and tear over time. Symptoms include visible cracks, holes, or loose/missing parts on the ridge vent itself, as well as water stains, mold, or pest infestations in the attic.
For minor damage like loose fasteners or small cracks, you may be able to repair the ridge vent yourself. However, for more extensive damage or if you're unsure of the cause, it's best to call a professional roofing contractor to inspect and properly fix the issue. They can ensure the ridge vent is sealed, properly installed, and functioning to protect your home.