The benefits of properly installed gutter system channels water away from the base of your home, possibly helping to avoid foundation problems, water staining and soil erosion. Concentrated water on door entrances or decks can cause high moisture levels and lead to wood rot. Additionally, this collection of water in your roof valleys may cascade onto your sidewalk or patio, leaving you with a waterfall effect. In the winter, this can lead to thick freezing ice on your side walk or patio area. These issues can be fixed by either cleaning out the original gutter system, installing a new gutter system and/or leaf guard system and changing the downspout size to a larger downspout that can handle more water (and has a larger opening to let that water out) which will not clog as easy.