The Benefits of Seamless Gutters
Originally, gutters were only sold in sections and pieces. The sections were designed so you could string them together over the entire length of your roof, using sealant to connect each piece to the adjacent one. This system allowed for the mass production of gutter pieces, as they could be cut and sealed together to fit just about any home.
Instead of forming a gutter system out of numerous pieces, now one piece of aluminum can be molded to length and installed as one single piece.
Seamless gutters are not entirely seamless because gutter runs that stretch around corners require seams on both sides of the corner, but for the most part, they provide a straight shot of unmarred metal from one end to the other.
Seamless gutters are superior to their sectional counterparts because they minimize leaks. Even well-constructed seams with ample sealant can start to wear away over time, allowing water to escape the gutter system.
Seams also form ridges along the bottom of the gutter, backing up small amounts of water and giving debris plenty of opportunity to form a blockage. Seamless gutters are much easier to clean. Because they are formed from a single sheet of metal seamless gutters have a more uniform look than sectional pieces.