The answer to 'why is my roof vent worn out' is that roof vents can become worn out over time due to exposure to the elements, including UV rays, wind, rain, and temperature changes. Common symptoms of a worn-out roof vent include cracks, leaks, or the vent becoming dislodged from the roof. Roof vents typically have a lifespan of 10-20 years, depending on the quality of the materials and the climate conditions.
If your roof vent is worn out, it's important to replace it to prevent further damage to your roof and home. While some homeowners may be able to replace a simple roof vent themselves, it's generally recommended to hire a professional roofing contractor, especially for more complex roof vent systems or if there is any existing damage to the roof.