Seamless Gutter Installation in Charlotte
Gutter size is an arithmetic question, and in Charlotte the arithmetic often does not favour the 5-inch default.
Sizing against Charlotte rainfall
Roof drainage is sized on rainfall intensity, not annual totals. For Charlotte, NOAA Atlas 14 puts the 100-year, 60-minute intensity at 3.19 inches per hour - the duration and return period the plumbing code's roof-drainage tables key on. Run that through the code's gutter capacity table and a 5-inch gutter at standard slope covers roughly 2,230 square feet of roof. A 6-inch covers about 3,320. Plenty of Charlotte houses put more than 2,230 square feet onto a single drainage plane, which is where the 5-inch default quietly runs out. Two honest caveats. Those figures come from the code table for semicircular gutters, and residential K-style has a different cross-section, so treat them as conservative rather than exact. And they describe drainage design, not a legal requirement - nobody is going to tell you your gutters are illegal.
What seamless actually changes
Seamless runs are formed on site to the length of the elevation, so the only joints are at corners and outlets. Fewer joints is fewer places for a seal to fail, which is the most common repair we are called for on older sectional runs.
What it costs
Typical installed pricing in this market runs in the range of $9 to $18 per linear foot depending on gutter size, material and access. We measure before quoting rather than pricing over the phone.
Where the outlets have to keep up
Sizing the trough without sizing the outlets moves the bottleneck rather than removing it. The code rates a 6-inch gutter at 110 gallons per minute, and a 2-inch vertical drain at 34. A large run emptying through one small outlet cannot shift what it collects, and the surplus goes over the front edge exactly as if the gutter were too small. So a replacement quote should say how many downspouts the run will have and where they land, not just what size the gutter is. On a long elevation, adding an outlet is frequently worth more than adding an inch.
What replacement is a good moment for
The run is coming down anyway, which makes it the cheapest point to deal with anything behind it. Soft fascia is the obvious one - new gutters hung on wood that no longer holds a fixing will pull away again, and the board is only accessible while the gutter is off. It is also the moment to correct a roof edge that has been letting water track behind the gutter, and to add a cleanout if downspouts feed buried lines that have no access point.
Materials, briefly and without the sales pitch
Aluminium is the default here and it is the right default for most houses: light, non-rusting, formed on site, and inexpensive to replace if something goes wrong. Heavier gauge resists denting and ladder damage better than thin stock, and the difference in cost is small relative to the job. Copper exists, costs several times more, and is chosen for appearance on period properties rather than for performance. On a house inside one of Charlotte's eight local historic districts, material and profile may be constrained by the commission's standards, which is worth establishing before anyone quotes.