The answer to 'why is my gutter moldy' is that gutters can become moldy due to a buildup of debris, moisture, and lack of proper cleaning and maintenance. Gutters that are clogged with leaves, sticks, and other organic matter provide the perfect environment for mold and mildew to grow, especially in damp climates.
Mold in gutters is a common problem that can lead to more serious issues like water damage, rot, and even foundation problems if left unaddressed. The best way to prevent gutter mold is to regularly clean and maintain your gutters, ensuring they are free of debris and allowing water to flow freely.