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Gutters · Sunny Isles Beach

Gutters in Sunny Isles Beach, FL

In a 10-year storm, rain in Sunny Isles Beach can fall at 11 inches an hour in a single 5-minute burst, according to NOAA Atlas 14 rainfall values for this town. That burst is what a gutter has to carry. Most gutter failures here come from undersized runs and downspouts that dump water against the wall, not from the gutter itself.

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Updated October 2026

Aerial view of high-rise condos along a sandy beach with people and umbrellas.
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.Our work
Photo: Sunny Isles Beach Morning by Miamiresidence, CC BY 4.0, cropped

Sizing for the storm

How much rain your gutters must carry

Sizing starts with the short, intense burst, not the daily total. Here a 1-hour rain in a 10-year storm falls at 3.5 inches an hour, and a 25-year 5-minute burst reaches 13 inches an hour. A gutter sized for an average afternoon will overflow long before the storm ends.

The same house in the same downpour with a white seamless gutter catching the runoff and a downspout discharging onto a splash block, flower bed intact (illustration)Illustration

Illustration: downpour with gutter

Plumbing code tables size horizontal gutters by the flow the roof sends into them. A 6-inch half-round at 1/8 inch per foot slope is rated for 110 gallons per minute, and that is the size most homes on this type of lot should consider. Larger roofs or steep pitches push you toward a bigger profile or a second downspout.

Downspouts follow the same logic. A 2 1/2 by 3 inch leader handles 92 gallons per minute by the code table, which is too small for many of the flat-roofed buildings here. Walls that shed rain onto the roof add to the load, and the code counts half their area.

Discharge rules

Where the water must go once it leaves the gutter

The residential code sets a clear distance for where downspout water lands. On a lot with little open ground, the water must still travel at least 1 foot off the sidewall, and underground piping is often the only route that fits.

Water that runs along the surface of this lot must not pool against the foundation. Water covers 44.2 percent of the city's total area, so drainage runoff has few open routes, and a downspout that drops water into a bed can soak the ground near the wall.

Keeping gutters clear

Leaves, pollen and cleaning on the barrier island

Trees here shed debris through much of the year. Southern live oaks leave litter, and oaks and pines are major pollen producers from January to June, with peaks in March and April. Clean gutters after the spring pollen, before the June to September rain, and again after the autumn pine-needle drop.

Hurricane season runs June 1 to November 30, so gutters should be clear before it starts. A clogged gutter can cause water damage, mold and pests. Gutter guards help, but independent testing found that fine screens still struggle with a severe downpour, so cleaning stays necessary.

Rain on your roof

Preset: 8.79 inches, the 10-year 24-hour rain (NOAA Atlas 14 at Sunny Isles Beach).

10,952 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 Sunny Isles Beach: questions

How big should my gutters be in Sunny Isles Beach?

Size them for a 5-minute, 10-year downpour, which falls at 11 inches an hour here. A 6-inch half-round gutter at 1/8 inch per foot slope is rated for 110 gallons per minute under the plumbing code. Larger roofs, steeper pitches and walls that shed onto the roof all push the size up. Confirm the final size with the building office before installing.

Source: NOAA Atlas 14 Volume 9 version 2, partial-duration intensity estimates at the Sunny Isles Beach 2020 Census internal point (25.9388, -80.1235), read Oct 5, 2026

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Where do my downspouts have to drain in Sunny Isles Beach?

Downspout water must land at least 1 foot from the sidewall. Piping run underground, a tail extension or a splash block can each meet that distance. A downspout that empties against the foundation fails the test. Check the layout with the City of Sunny Isles Beach Building Department before you start.

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

Related: Gutters

How often should I clean gutters near oak trees here?

Plan on at least two cleanings a year, and more under heavy canopy. Southern live oaks shed litter, and oaks and pines produce pollen from January to June. Good timing is after the spring pollen, before the June to September rains, and after the autumn pine-needle drop. Gutters should be clear before hurricane season begins on June 1, which is 30 days before November 30 closes the season.

Source: ask.ifas.ufl.edu, read Oct 5, 2026

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Nearby

Gutters near Sunny Isles Beach

Sources for this page(31)
  1. 1.Owner-occupied share of occupied homes: 54.2% (5,541 of 10,219). U.S. Census Bureau, American Community Survey 2024 5-year estimates (2020-2024), table B25003, via Census Reporter API. Read Oct 5, 2026.
  2. 2.Permit office: City of Sunny Isles Beach - Building Department. City of Sunny Isles Beach - Building Department. Read Oct 10, 2026.
  3. 3.U.S. Census Bureau, 2020 Census counts (POP100, HU100) via TIGERweb tigerWMS_Census2020 (AREALAND/AREAWATER). Read Oct 5, 2026.
  4. 4.NOAA NCEI U.S. Climate Normals 1991-2020 (access data service). Read Oct 5, 2026.
  5. 5.NOAA National Hurricane Center, Tropical Cyclone Climatology. Read Oct 5, 2026.
  6. 6.2023 Florida Building Code, Plumbing, 8th ed., Chapter 11 (UpCodes viewer, unofficial transcription). Read Oct 5, 2026. FBC text read from UpCodes (unofficial transcription): check floridabuilding.org or the ICC viewer before quoting (spec 8.7). Source URL inherited from COM-20 (the research cites it "as COM-20").
  7. 7.bergerbp.com. Read Oct 5, 2026.
  8. 8.2023 Florida Building Code, Residential, 8th ed., Chapter 8 (UpCodes viewer, unofficial transcription). Read Oct 5, 2026. FBC text read from UpCodes (unofficial transcription): check floridabuilding.org or the ICC viewer before quoting (spec 8.7). Source URL inherited from NC-2 (the research cites it "as NC-2").
  9. 9.2023 Florida Building Code, Residential, 8th ed., R318.5 (UpCodes viewer, unofficial transcription); FBC-Building 1503.7. Read Oct 5, 2026. FBC text read from UpCodes (unofficial transcription): check floridabuilding.org or the ICC viewer before quoting (spec 8.7).
  10. 10.ask.ifas.ufl.edu. Read Oct 5, 2026.
  11. 11.blogs.ifas.ufl.edu. Read Oct 5, 2026.
  12. 12.thig.com. Read Oct 5, 2026.
  13. 13.consumerreports.org. Read Oct 5, 2026.
  14. 14.NOAA Atlas 14 Volume 9 version 2, partial-duration intensity estimates at the Sunny Isles Beach 2020 Census internal point (25.9388, -80.1235), NOAA Hydrometeorological Design Studies Center. Read Oct 5, 2026.
  15. 15.U.S. Census Bureau, American Community Survey 2024 5-year estimates (2020-2024), table B25003, via Census Reporter API, U.S. Census Bureau (via Census Reporter). Read Oct 5, 2026.
  16. 16.City of Sunny Isles Beach - Building Department, City of Sunny Isles Beach. Read Oct 5, 2026.
  17. 17.NOAA Atlas 14 Volume 9 version 2, partial-duration 24-hour depth estimates at the Sunny Isles Beach 2020 Census internal point (25.9388, -80.1235), NOAA Hydrometeorological Design Studies Center. Read Oct 5, 2026.
  18. 18.U.S. Census Bureau, American Community Survey 2024 5-year estimates (2020-2024), table B25024, via Census Reporter API, U.S. Census Bureau (via Census Reporter). Read Oct 5, 2026.
  19. 19.U.S. Census Bureau, American Community Survey 2024 5-year estimates (2020-2024), table B25035, B25034, B25024, via Census Reporter API, U.S. Census Bureau (via Census Reporter). Read Oct 5, 2026.
  20. 20.Citizens Property Insurance Corporation, inspections FAQ (updated 2026-03-17), Citizens Property Insurance. Read Oct 4, 2026.
  21. 21.2023 Florida Building Code, Building, 8th ed., Chapter 15 (UpCodes viewer, unofficial transcription), UpCodes (Florida Building Code transcription). Read Oct 5, 2026.
  22. 22.Florida Building Commission, 'Setting New Standards for Safety: The Florida Building Code' (2004 publication; wind-speed figures in it are outdated and not used), Florida Building Commission. Read Oct 5, 2026.
  23. 23.2023 Florida Building Code, Building, 8th ed., Chapter 1 (UpCodes viewer, unofficial transcription), UpCodes (Florida Building Code transcription). Read Oct 5, 2026.
  24. 24.Wikipedia, 'Sunny Isles Beach, Florida' (revision 1375548034), Wikipedia. Read Oct 5, 2026.
  25. 25.NOAA National Hurricane Center, Tropical Cyclone Report: Hurricane Irma (AL112017), NOAA National Hurricane Center. Read Oct 5, 2026.
  26. 26.NOAA NCEI U.S. Climate Normals 1991-2020 (access data service), NOAA National Centers for Environmental Information. Read Oct 5, 2026.
  27. 27.Florida Statutes, section 553.842 (2026), Florida Legislature. Read Oct 5, 2026.
  28. 28.Florida Building Commission, Florida Building Commission. Read Oct 5, 2026.
  29. 29.FRSA, "New 2023 FBC Eighth Edition is Now in Effect", 2024-02-13, floridaroof.com. Read Oct 5, 2026.
  30. 30.Miami-Dade County RER notice, Miami. Read Oct 5, 2026.
  31. 31.NOAA Atlas 14 at Sunny Isles Beach: 11 in/hr (5-minute, 10-year). NOAA Atlas 14 Precipitation Frequency Data Server. Read Oct 5, 2026.

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Gutters in Sunny Isles Beach

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