The answer to 'why is my roof vent cracked' is that a cracked roof vent is often caused by age, weather exposure, or improper installation. Over time, the materials in the vent can become brittle and crack due to UV radiation, temperature changes, and other environmental factors. Incorrect installation can also lead to cracks forming around the vent's base or seams.
If you notice a cracked roof vent, it's important to address it promptly to prevent further damage to your roof and potential leaks. Smaller cracks may be able to be sealed with a roofing sealant, but larger cracks or damaged vents will likely need to be replaced by a professional roofing contractor.