St. Louis Gutter Installation

5-inch K-style is adequate for most St. Louis homes. SMACNA reference tables show 5-inch handles roughly 5,520 square feet of drainage area at 4 inches per hour rainfall. We step up to 6-inch with 3x4 downspouts on larger drainage areas, complex roofs with multiple valleys feeding one run, and homes with chronic overflow history.

Heat tape (heating cable) is a real consideration for chronic-ice-dam homes — typically older homes with inadequate attic insulation and ventilation. It keeps the drainage path open during freeze-thaw cycles. Important: heat tape is not a substitute for fixing the upstream attic problem, which is the actual fix for ice dams. We discuss heat tape on a per-home basis after looking at the attic and the eave geometry. For homes with proper attic insulation/ventilation, heat tape is unnecessary.

.032 gauge as standard for St. Louis. The lighter .027 gauge is acceptable in milder climates but loses ground in hail belt conditions and freeze-thaw stress. .032 holds up better against hail dents, snow load, and the freeze-thaw expansion that loosens hangers over time.

Snow load on the gutter lip on north-facing eaves stays longer through winter and creates ongoing uplift force on the hidden hangers. 24-inch maximum spacing distributes that load across more attachment points and prevents the gutter from progressively pulling away from the fascia. Standard residential 24-32 inch spacing is adequate on south-facing eaves and corners where snow melts faster.

Ice dams typically start at the eave when warm air from the attic melts snow on the upper roof, the meltwater runs down to the cold eave, and refreezes. The dam blocks subsequent meltwater from draining, and the water can back up under shingles and into the wall. Where the dam forms in the gutter, the gutter can fill with ice and pull off the fascia under the weight. The fix is upstream: attic insulation and ventilation. Heat tape in the gutter mitigates symptoms but does not address the root cause.

Hail dents on gutters are typically covered when the underlying storm event is documented for the roof claim. Cosmetic-only dents on aluminum are sometimes contested by carriers, but functional damage (creased gutters, separated hangers, downspout damage) is consistently covered. We document gutter damage with the same photo-by-elevation approach we use for roofs.

For homes under maple, oak, or other deciduous canopy, micromesh guards with 200-275 micron stainless steel mesh handle fall debris well and reduce winter cleanout requirements. Some micromesh systems advertise improved ice/snow performance — we verify on the actual product spec rather than marketing claim. Reverse-curve guards work well against larger leaves but can struggle with seed pods and very fine debris.

Most installs complete in 1-2 working days. Seamless forming happens on-site. Fascia repair (when rot from ice-dam history is found) is the main schedule variable. Heat-tape installations add an electrician coordination step. Winter installs are possible with weather watching but we avoid sub-freezing temperatures for sealant work.

No. St. Louis does not have chronic salt-air exposure. Standard hot-dip galvanized fasteners are adequate. Stainless or hot-dip galvanized are coastal-Houston and lake-adjacent-NOLA considerations, not St. Louis.

For historic Central West End and architecturally significant homes, often yes. Copper has a 50+ year service life, develops a green verdigris patina that ages alongside historic architecture, and is more hail-resistant than aluminum. The cost premium is significant — typically 3 to 5 times equivalent aluminum K-style. For most St. Louis homes, .032 aluminum is the right balance of cost and performance.