What profile will actually fit in Cornelius
5-inch and 6-inch K-style aluminium on hidden hangers, in good order, with the usual builder-minimum 2x3 downspouts. The mismatch specific to Cornelius is that the lakeside houses have the largest roof planes, the tallest elevations and the highest lateral debris load in the town, and they were given the same drainage specification as the standard inland lots in the same development. That is where the overflow calls come from.
Seamless does not change any of that, and it is worth being precise about what it does change. The machine sits on a trailer at the kerb and rolls flat aluminium coil into finished profile at whatever length is called for, so a 46-foot elevation becomes one 46-foot piece with no joint anywhere along it. Sectional gutter would have four connectors in that run, each one a place for sealant to fail and debris to catch.
What seamless does not remove is the joints at the corners and the end caps, and those are where gutters actually leak, because a mitre sits where two roof planes deliver water at once and at speed. That is why we hand-mitre, two pieces cut to the true angle of your roof rather than a factory 90 riveted in, and why it is included in the rate rather than sold as an upgrade.
The other question Cornelius raises is whether the profile you want will physically sit under the roof edge. Shallow overhangs on older housing frequently rule out 6-inch entirely, and finding that out on the day is somebody's problem. We measure the eaves before ordering, and where more capacity is genuinely needed but a wider trough will not fit, the answer is an additional downspout, which is cheaper anyway.
What Cornelius itself changes
The housing in Cornelius
Cornelius is a steady two-decade town (24.1% of the housing built in the 1990s and 32.5% in the 2000s, with a median of 2002), which gives it an unusually even spread of gutter ages rather than the single cohort of its Union County counterparts. Failures here are spread out rather than arriving street by street. What sets Cornelius apart is not the housing age at all but where the housing is: a large share of it is on or near the Lake Norman shore, and that changes the debris problem in a way the build year does not describe.
What drops on these roofs
Moderate on the lots themselves, and the interesting part is what arrives from elsewhere. Wind coming across open water carries leaves, pine needles and seed laterally onto lakeside roofs from trees that are not on the property and sometimes not on the street, which is why lakeside houses here fill up faster than their own planting would predict. Homeowners routinely tell us they have no trees, and their gutters are full, and both of those are true.