The answer to 'why is my gutter filthy' is that gutters can become clogged and dirty over time due to the buildup of leaves, twigs, dirt, and other debris. This is a common problem that many homeowners face, especially in areas with a lot of trees or during the fall season.
Some of the most common causes of a filthy gutter include overhanging trees, lack of regular cleaning, and poor gutter design or installation. If gutters are not cleaned regularly, the debris can accumulate and prevent proper water drainage, leading to issues like water damage, foundation problems, and even pest infestations.