Gutters · Bal Harbour

Gutters in Bal Harbour, FL

Bal Harbour's 5-minute rain in a 10-year storm falls at 11 inches an hour, and that single figure sets the size your gutters need. A gutter sized for gentle rain can overflow within minutes of a burst like that, sending water down the fascia and toward the wall or under the eaves.

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Updated October 2026

Black-and-white photo of a two-storey midcentury apartment building with a clipped hedge and lawn. — Photo: Midcentury Apartment Building Bal Harbour Built 1950 - Phillip Pessar by Phillip Pessar, CC BY 2.0, cropped

Drone view of a single-story home with a brown-gray shingle roof and box vents under large oak trees, a metal carport roof in the corner and a street behind. — Photo: Midcentury Apartment Building Bal Harbour Built 1950 - Phillip Pessar by Phillip Pessar, CC BY 2.0, cropped

Sizing for local rain

How hard rain here sizes your gutters

The plumbing code sizes horizontal gutters from the flow off the roof, so the storm you size for matters. Local rain is heavy in short bursts. A 1-hour rain in a 10-year storm falls at 3.44 inches an hour, and a 24-hour storm in a 10-year event drops 8.6 inches. Those numbers push a gutter toward a larger profile than a light-rain guess would.

Close-up of an old sagging gutter pulling away from a rotted, water-stained fascia board with peeling paint and mildew under the eave (illustration)

Illustration: rotted fascia

Bal Harbour sits on a lot with a lot of roof for its size, and the code adds half the area of any vertical wall that sheds rain onto the roof. By our arithmetic, a 6-inch half-round at 1/8 inch per foot carries 110 gpm, about 49 percent more than a 5-inch at the same slope. That gap is the difference between an overflow and a clean run.

Discharge rules

Downspouts and where the water goes

Downspouts must discharge at least 1 foot from the building sidewall, whether through underground piping, tail extensions or splash blocks. Water that lands at the foundation in a 5-minute burst will sit against the wall. Bal Harbour's lots are mostly multi-unit buildings, and 92.3 percent of homes are in buildings with 10 or more units, so the discharge path is often a shared grade. Check it before the next storm.

Walk the grade at each downspout exit after a heavy rain and look for pooling.
Match downspout size to the gutter: a 3 by 4 1/4 inch or 4 inch round leader carries 192 gpm.
Ask the Village of Bal Harbour building office which discharge details apply to your property.

Rain on your roof

Roof area (square feet)Rain (inches)

Preset: 8.6 inches, the 10-year 24-hour rain (NOAA Atlas 14 at Bal Harbour).

10,716 gallons run off that roof, all of it toward the gutters and downspouts.

Math: square feet × inches × 0.623 gallons.

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Questions

Gutters in Bal Harbour: questions

How big should gutters be in Bal Harbour?

Size them for the 5-minute, 10-year rain, which falls at 11 inches an hour here. A 6-inch half-round at 1/8 inch per foot carries 110 gpm, which is about 49 percent more than a 5-inch. Your roof area, any walls that shed water onto the roof and the pitch all change the number. Have the building office or a contractor run the figures for your roof.

Source: NOAA Atlas 14 Volume 9 version 2, partial-duration intensity estimates at the Bal Harbour 2020 Census internal point (25.8936, -80.1232), read Oct 5, 2026

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How far should a downspout discharge from the building?

At least 1 foot from the structure sidewall, and the rule allows underground piping, tail extensions or splash blocks. In Bal Harbour, where a 1-hour 10-year rain falls at 3.44 inches an hour, a short discharge path can send water back toward the foundation. Check the grade where your downspouts land after heavy rain.

Source: 2023 Florida Building Code, Residential, 8th ed., R318.5 (UpCodes viewer, unofficial transcription); FBC-Building 1503.7, read Oct 5, 2026

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How often should gutters be cleaned in Bal Harbour?

Insurers and trade sources recommend cleaning gutters at least twice a year, usually in spring and fall, and more often under overhanging trees or during frequent storms. Tower Hill Insurance Group states this. In a village with 3,741 housing units, many multi-unit roofs collect debris from shared trees, so clean them on that schedule.

Source: thig.com, read Oct 5, 2026

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Do gutters need to be attached to a roof that has no overhang?

Bal Harbour's housing has a median build year of 1981, so many older roofs may have shallow eaves. Where eaves project less than 6 inches, the code calls for gutters with downspouts, though gable end rakes and roofs above another roof are exempt. Confirm your case with the Village of Bal Harbour building office.

Source: 2023 Florida Building Code, Residential, 8th ed., R318.5 (UpCodes viewer, unofficial transcription); FBC-Building 1503.7, read Oct 5, 2026

Related: Gutters

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