6-inch K-style aluminum and half-round copper, rolled to exact length on-site with no middle seams. Hidden hangers screwed into rafter tails, not the fascia. Ice-shield heat cable for the winters that actually test them.
Sectional gutter — the kind you buy off a shelf — has a joint every 10 feet. Each joint is caulked, and every caulk joint eventually fails. Seamless gutters are rolled from coil stock in one continuous length, sometimes 80 ft in a single pull. There are no mid-run seams to leak.
The other gutter decision that matters: hanger spacing and hanger type. Factory-default 36" spacing on fascia brackets will fail in Illinois snow load. We run hidden hangers at 24" on center, fastened with structural screws into rafter tails, not the fascia board.
Aluminum for most homes, copper for character, oversized for high-volume roofs.
Linear feet, downspout count, drainage plan, color sample.
Old gutters taken down, fascia inspected for rot.
Gutter rolled on-site to exact length, hidden hangers at 24" OC.
Downspouts piped, water test at every outlet, clean-up.
On-site measure and same-week installs across Chicago, the North Shore, and Milwaukee.