The answer to 'why is my ridge vent damaged' is that ridge vents can become damaged over time due to weather exposure, improper installation, or lack of maintenance. Common symptoms include cracks, splits, or holes in the vent material, which can allow water and pests to enter the attic. This can lead to leaks, moisture buildup, and other roofing problems.
To fix a damaged ridge vent, you may be able to make minor repairs yourself, such as sealing cracks or replacing damaged vent sections. However, if the damage is extensive or the vent was improperly installed, it's best to call a professional roofing contractor to assess the issue and provide a long-term solution.