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Gutters · North Miami Beach

Gutters in North Miami Beach, FL

North Miami Beach's 10-year rain can drop 3.48 inches in one hour, so gutters here face a short, heavy load. Most of the city's housing was built long before that rate was ever tested on a roof. Older gutters here are often sized for milder rain, and they overflow first at the corners and low runs.

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Updated October 2026

Stone cloister arcade around a courtyard with a large spreading tree and brick paths.
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: The garden by Casingrid, CC BY-SA 3.0, cropped

Sizing for local rain

How much water your gutters and downspouts must carry

Here the plumbing code ties gutter size to the water coming off a North Miami Beach roof. At 1/8 inch per foot, a 6-inch half-round carries 110 gallons a minute, while a 5-inch one carries 74. That step up adds about 49 percent capacity at the same slope.

Copper-tone half-round gutters on decorative hangers with a round copper downspout on an upscale cream stucco home with a flat tile roof, live oak with Spanish moss and palm (illustration)Illustration

Illustration: half round copper

Downspouts are sized separately. A 2 by 3 inch leader handles 30 gallons a minute, while a 3 by 4 1/4 inch or 4 inch round leader handles 192. Where a wall above the roof sheds rain onto it, the code adds half that wall's area to the roof area before you size anything.

  • Ask the installer which rain rate the sizing used, since the answer changes by more than two times.
  • Count the wall area that sheds onto the roof and add it to the roof area.
  • Check that each downspout is not smaller than the gutter run it drains.

Code and lot drainage

Downspout discharge and where the water goes

Florida code requires downspouts to discharge at least 1 foot from the wall. Piping run underground, a tail extension, or a splash block all meet that rule. On a North Miami Beach lot, a discharge that lands against the foundation or a neighbor's fence line is the one to fix first.

Gutters and leaders must be fastened with corrosion resistant hardware suited to outdoor exposure. Given Miami-Dade's wet season, check the hangers and joints each spring.

Keep the flow open

Leaves, trees and cleaning schedule

Miami-Dade gets 76.6 percent of its normal annual rain between May and October, so gutters are working hardest just as leaves and debris build up. The hurricane season's statistical peak falls on September 10, with most activity from mid-August to mid-October.

Trees in this area can drop litter at any time. Clean gutters at least twice a year, in spring and fall, and more often under heavy tree cover. Check downspouts for debris too, since a clogged leader overflows the same way a clogged gutter does.

Work near gutters during storms is a fall risk. NWS Miami advises staying off roofs and high places when thunder can be heard.

Rain on your roof

Preset: 8.75 inches, the 10-year 24-hour rain (NOAA Atlas 14 at North Miami Beach).

10,903 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 North Miami Beach: questions

How hard does it rain in North Miami Beach?

A 5-minute downpour in a 10-year storm falls at 11 inches an hour here. A 1-hour rain in that same storm reaches 3.48 inches an hour, and a 24-hour rain reaches 8.75 inches. Gutters and downspouts are sized to the short, intense burst, not to the average day. Confirm these design values with the City of North Miami Beach Building Department before you finalize a sizing plan.

Source: NOAA Atlas 14 Volume 9 version 2, partial-duration intensity estimates at the North Miami Beach 2020 Census internal point (25.9300, -80.1652), read Oct 5, 2026

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What size downspout does my North Miami Beach home need?

The code sizes downspouts by the roof area each one drains. A 2 by 3 inch leader handles 30 gallons a minute, while a 4 inch round leader handles 192. Count any wall that sheds water onto the roof, since the code adds half its area. Ask your installer which rain rate the sizing used.

Source: 2023 Florida Building Code, Plumbing, 8th ed., Chapter 11 (UpCodes viewer, unofficial transcription), read Oct 5, 2026

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Where should downspouts drain in North Miami Beach?

Downspouts must discharge at least 1 foot from the wall, which is the rule for homes in this city and across Miami-Dade. Underground piping, a tail extension, or a splash block can each meet it. Keep the water off the foundation and off the neighbor's side of a lot that sits near the Intracoastal Waterway.

Source: 2023 Florida Building Code, Residential, 8th ed., Chapter 8 (UpCodes viewer, unofficial transcription), read Oct 5, 2026

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How often should I clean gutters under trees in North Miami Beach?

Experts recommend cleaning gutters at least twice a year, in spring and fall. Under heavy tree cover, clean them more often. In Miami-Dade, clean before the June through September storm season, and again after the autumn needle drop. With 76.6 percent of normal annual rain falling May to October, a clogged gutter gets tested fast.

Source: thig.com, read Oct 5, 2026

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Nearby

Gutters near North Miami Beach

Sources for this page(35)
  1. 1.NOAA NCEI U.S. Climate Normals 1991-2020 (access data service). Read Oct 5, 2026.
  2. 2.Housing units (ACS 5-year): 17,533. U.S. Census Bureau, American Community Survey 2024 5-year estimates (2020-2024), table B25001, via Census Reporter API. Read Oct 5, 2026.
  3. 3.NOAA NCEI U.S. Climate Normals 1991-2020 (access data service). Read Oct 5, 2026.
  4. 4.NOAA National Hurricane Center, Tropical Cyclone Climatology. Read Oct 5, 2026.
  5. 5.NWS Miami, Weather Safety - Lightning. Read Oct 5, 2026.
  6. 6.U.S. Census Bureau, American Community Survey 2024 5-year estimates (2020-2024), table B25034, via Census Reporter API. Read Oct 5, 2026.
  7. 7.Median year homes were built: 1967. U.S. Census Bureau, American Community Survey 2024 5-year estimates (2020-2024), table B25035, via Census Reporter API. Read Oct 5, 2026.
  8. 8.Permit office: City of North Miami Beach - Building Department. City of North Miami Beach - Building Department. Read Oct 10, 2026.
  9. 9.Wikipedia, 'North Miami Beach, Florida' (revision 1378595964). Read Oct 5, 2026.
  10. 10.2023 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").
  11. 11.bergerbp.com. Read Oct 5, 2026.
  12. 12.NOAA Atlas 14 (HDSC Precipitation Frequency Data Server). Read Oct 5, 2026.
  13. 13.2023 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").
  14. 14.2023 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).
  15. 15.2023 Florida Building Code, Residential, 8th ed., Chapter 3 (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).
  16. 16.2023 Florida Building Code, Residential, 8th ed., Chapter 9 (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-29 (the research cites it "as COM-29").
  17. 17.thig.com. Read Oct 5, 2026.
  18. 18.ask.ifas.ufl.edu. Read Oct 5, 2026.
  19. 19.NOAA National Centers for Environmental Information. Read Oct 5, 2026.
  20. 20.NOAA Atlas 14 Volume 9 version 2, partial-duration intensity estimates at the North Miami Beach 2020 Census internal point (25.9300, -80.1652), NOAA Hydrometeorological Design Studies Center. Read Oct 5, 2026.
  21. 21.U.S. Census Bureau, American Community Survey 2024 5-year estimates (2020-2024), table B25035, via Census Reporter API, U.S. Census Bureau (via Census Reporter). Read Oct 5, 2026.
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  23. 23.City of North Miami Beach - Building Department, citynmb.com. Read Oct 5, 2026.
  24. 24.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.
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  26. 26.Florida Statutes, section 627.7011 (2026), Florida Legislature. Read Oct 4, 2026.
  27. 27.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.
  28. 28.miamidade.gov, miamidade.gov. Read Oct 5, 2026.
  29. 29.2023 Florida Building Code, Building, 8th ed., Chapter 15 (UpCodes viewer, unofficial transcription), UpCodes (Florida Building Code transcription). Read Oct 5, 2026.
  30. 30.Miami-Dade County RER notice, Miami. Read Oct 5, 2026.
  31. 31.2023 Florida Building Code, Building, 8th ed., Chapter 1 (UpCodes viewer, unofficial transcription), UpCodes (Florida Building Code transcription). Read Oct 5, 2026.
  32. 32.Official website: City of North Miami Beach, Historic Floods, citynmb.com. Read Oct 5, 2026.
  33. 33.NOAA National Hurricane Center, Tropical Cyclone Report: Hurricane Irma (AL112017), NOAA National Hurricane Center. Read Oct 5, 2026.
  34. 34.NOAA National Hurricane Center, Tropical Cyclone Report: Hurricane Dorian (AL052019), NOAA National Hurricane Center. Read Oct 5, 2026.
  35. 35.NOAA Atlas 14 at North Miami 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 North Miami Beach

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