The answer to 'why is my flashing cracked' is that flashing can crack due to age, weather exposure, or improper installation. Flashing is the thin metal or plastic material used to seal joints and prevent water leaks around roof features like chimneys, vents, and skylights. Over time, the flashing can deteriorate and develop cracks, especially if it was not installed correctly or if the roof has experienced significant weather like heavy rain, snow, or high winds.
Cracked flashing can allow water to penetrate the roof and cause damage to the home's interior. Signs of cracked flashing include visible cracks or gaps, water stains on the ceiling or walls near the roof feature, and mold or mildew growth. To fix cracked flashing, the damaged sections will need to be replaced, which is a job best left to a professional roofing contractor. Attempting DIY flashing repairs can be tricky and may not provide a long-lasting solution.