By Gutter Supply Chicago
Gutter coil gauge is the thickness of the aluminum used to form seamless gutters. The right gauge affects how well the gutter resists dents, sagging and snow load. This guide covers the common options for contractors in Chicago.

The most common aluminum gutter coil thicknesses are .027 inch and .032 inch. Use .027 inch for standard 5-inch residential gutters. Choose .032 inch for 6-inch gutters, long runs, commercial work and roofs that collect heavy snow and ice.
| Thickness | Strength | Typical use |
|---|---|---|
| .027 inch | Standard | 5-inch residential gutters |
| .032 inch | Heavier, more dent resistant | 6-inch gutters, long runs, heavy snow areas, commercial jobs |
For aluminum coil, contractors usually describe thickness in thousandths of an inch. A higher number means thicker metal. Thicker coil costs more but holds its shape better under ladders, falling branches, snow and ice.
Chicago winters put heavy loads on gutters. Ice dams and packed snow can bend thin gutters and pull hangers loose. On exposed roofs and larger homes, many contractors move up to thicker coil and closer hanger spacing.
Gauge is only one part of the system. Match it with the right gutter size (see 5-inch vs 6-inch gutters), enough downspouts and good sealant and screws.
Gutter Supply Chicago supplies aluminum gutter coil with same-day quotes and job-site delivery. Gauges and colors vary, so call (312) 823-7355 or request a quote to confirm current stock.
For roofing and drainage best practices, see the National Roofing Contractors Association.
.027 inch aluminum is the most common for standard 5-inch residential gutters.
Use .032 inch coil for 6-inch gutters, long runs, commercial jobs and roofs that collect heavy snow and ice.
Thicker coil resists bending better, but ice dams are a roof ventilation and insulation issue. Pair thicker coil with proper hanger spacing.
Call (312) 823-7355 and we will confirm the gauges and colors in stock.
Send your list and get a same-day quote with job-site delivery.
Request a Quote Call (312) 823-7355