A seamless gutter is made at your house, not in a warehouse. Our truck carries the gutter machine: pre-painted aluminum coil feeds in one end and a finished K-style gutter comes out the other, measured against your eave and cut to that exact length. If the back of your home runs 80 feet, that side gets one 80 foot piece.
Sectional gutter from a big box store joins every 10 feet, and every joint is sealant waiting to fail. A seamless run only has joints where it must: at the corners and at the downspout outlets. Fewer joints means fewer drips onto the stucco, fewer stains and far less to go wrong in the August storms.