Common Debris and Clog Conditions
Obstructions develop when organic matter and fine particles settle into the system and prevent water from reaching the vertical outlets.
- Decaying leaves, needles, twigs, and seed pods that mat together along horizontal runs
- Granules washing down from older shingle surfaces that settle into low corners
- Silt and windblown dust that form dense sludge when mixed with standing water
- Nesting materials and pests attracted to damp, trapped organic matter