The one trouble with not getting a professional gutter cleaning each year is the damage it can cause to your roof. The sediment can build up in your gutters and drainage system overflows and has nowhere else to flow but into your roof. Over time, the shingles and wood that make up your roof can begin to decompose and cause leaks. If leaks go untreated, it could create greater problems, like damage to the interior of your home. So call a professional to make sure your gutters are in good shape!