Seamless gutters are created in longer format without seams between shorter pieces, like what can be found in big box home improvement stores. They are custom made and fabricated on site. Less seams means less opportunity for leaks and less rust formation. They are also lower maintenance, easier to clean, and they have less need to be resealed over time. Less seams also means less opportunity for debris to get caught and cause jams. We highly recommend seamless gutters for every home.