Leaves and needles that clog local gutters
Tree cover across Oregon drops a constant stream of debris into residential roof systems. Leaves, needles, and seeds collect in gutters, but the specific organic mix differs sharply across the state. In heavy canopy regions, thick broad leaves flatly cover drainage outlets, preventing water flow entirely. In evergreen areas, tiny needles slide past standard guards, forming dense, felt-like mats at the bottom of the channel. These trapped needles hold moisture against metal surfaces, accelerating rust and weighting down the whole structure. Because Oregon trees shed year-round without a single leaf-drop peak, debris accumulates steadily through every season, constantly blocking normal water flow.