Gutter hanger spacing, stock length & slope
Typical published planning values — NOT a certified design. Actual gutter sizing depends on local rainfall intensity, roof geometry, valleys and debris; follow local code and the manufacturer’s data, and consult a pro for complex roofs. Structural roof-load, ice-dam / heat-cable and foundation/yard drainage are set by code and a professional — not engineered here.
These are the labeled fastening and stock conventions — hanger spacing (closer in heavy-snow regions), the 10-ft stock length that sets the section count, and the recommended slope toward the downspout. Use them with the sections & materials calculator and the gutter slope calculator.
| Convention | Labeled typical | Note |
|---|---|---|
| Hanger spacing | 24–36 in | Closer in heavy-snow regions (24 in default) |
| Stock section length | 10 ft | Sectional gutter only; seamless has no mid joints |
| Slope toward the downspout | 0.25–0.50 in / 10 ft | A mid-run high point can drain both ways |
| Elbows per downspout | 3 | 2 at the top to reach the wall + 1 at the bottom |
| Waste / overage | 5–10% | For corners, cut waste and slope |
Labeled fastening & stock conventions — confirm hanger spacing against local code (closer in heavy-snow country) and the manufacturer’s data.