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Gutters · Kendall

Gutters in Kendall, FL

In a 10-year storm, a 5-minute downpour in Kendall falls at 10.9 inches an hour. That is a short, hard burst, and it overwhelms gutters sized for ordinary rain. Gutters here need to move water fast enough to clear the roof edge during those bursts, not just during steady drizzle.

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Updated October 2026

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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: SW 72nd Place NB at SW 89th Street Downtown Dadeland by Dough4872, CC BY-SA 4.0, cropped

Sizing for local rain

How much rain your Kendall gutters must handle

Kendall's rainfall design numbers come from NOAA Atlas 14. A 1-hour rain in a 10-year storm falls at 3.37 inches an hour, and a 100-year storm over 24 hours drops 14.6 inches. Those figures are the reason a gutter sized for light rain will spill over the edge in summer.

Close three-quarter view of a new white seamless K-style aluminum gutter along the eave of a single-story stucco ranch home with a dark shingle roof, live oaks and cumulus sky behind (illustration)Illustration

Illustration: seamless k style white

Florida's plumbing code sizes horizontal gutters by roof flow, not by house size. A 6-inch half-round gutter at 1/8 inch per foot slope is rated for 110 gallons per minute. A 5-inch one is rated for 74. The step up in size is worth the cost on long roof runs.

The same code sets downspout capacity separately. A 3 by 4 1/4 inch leader carries 192 gallons per minute, and a 2 by 2 inch leader only 30. A small downspout can hold back a gutter that is otherwise large enough.

Code and drainage

Downspout discharge and where the water goes

Florida's residential code requires downspouts to discharge at least 1 foot from the wall. You can use underground piping, a tail extension or a splash block, but the water must land clear of the foundation. On a Kendall lot with slab or raised foundations, this is the rule that keeps water out of the wall base.

  • Gutters with downspouts are required when eaves project less than 6 inches, except at gable rakes or where a roof sits above another roof.
  • Downspouts must end at least 1 foot from the sidewall.
  • Gutters and leaders must be corrosion resistant and fastened with compatible hardware.

Trees and debris

Leaves, pollen and cleaning on a Kendall lot

Southern live oaks, common in Kendall yards, drop leaves and fruit that become a litter problem in gutters. Oaks and pines are also the major pollen producers in Florida, with the pollen season running January to June and peaking in March and April. Pine needles fall most heavily in September through November.

An insurer's guidance recommends cleaning gutters at least twice a year, and more often under overhanging trees or during frequent storms. Blocked runs in Kendall's humid, rainy summers can let water back up under shingle edges. Under heavy canopy, clean after the spring oak drop, before the June to September storm season, and after the autumn needle peak.

Consumer testing found that fine-mesh guards outperformed larger-hole screens, but even the top-scoring one struggled with severe downpours, and all still needed brushing in high pollen. Plan on a ladder or a professional for cleaning either way.

Rain on your roof

Preset: 8.36 inches, the 10-year 24-hour rain (NOAA Atlas 14 at Kendall).

10,417 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 Kendall: questions

How much rain should Kendall gutters be sized for?

Size them for a short, intense burst, not for average rain. In a 10-year storm, a 5-minute downpour here falls at 10.9 inches an hour, and a 1-hour rain falls at 3.37 inches an hour. Gutters sized only for steady drizzle will overflow in summer thunderstorms. Ask your roofer which design storm the gutter size is based on, and confirm the final numbers with the Miami-Dade County building office before work starts.

Source: NOAA Atlas 14 Volume 9 version 2, partial-duration intensity estimates at the Kendall 2020 Census internal point (25.6673, -80.3528), read Oct 5, 2026

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Do Kendall homes need gutters and downspouts?

Florida's residential code requires gutters with downspouts on buildings whose eaves project less than 6 inches, except at gable end rakes or where a roof sits above another roof. Kendall's median home was built in 1978, so many older houses here have eaves and gutter layouts that predate the current rule. Eaves that project further may not require them under that rule. Check your house with the Miami-Dade County building office, since the answer depends on your roof design.

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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Where should downspout water go on a Kendall lot?

The code requires the water to land at least 1 foot from the sidewall. You can route it through underground pipe, a tail extension or a splash block. Keep the discharge clear of the foundation so water does not soak the wall base. Kendall has 32,492 housing units, so many of its lots sit close together, and a splash block that pushes water toward a neighbor's line can create a complaint. Route the discharge within your own lot.

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 Kendall gutters be cleaned under oak trees?

Clean them at least twice a year, and more often under overhanging trees or during frequent storms. Southern live oaks and pines are the main sources of load here, and the Florida pollen season runs January to June. Consider cleaning after the spring oak drop, before the June to September storm season, and after the fall needle peak. In Kendall, where 67.41 inches of rain fall in a typical year at Miami International Airport, a clean gutter before June matters.

Source: thig.com, read Oct 5, 2026

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Nearby

Gutters near Kendall

Sources for this page(38)
  1. 1.U.S. Census Bureau, American Community Survey 2024 5-year estimates (2020-2024), table B25035, via Census Reporter API. Read Oct 5, 2026.
  2. 2.Median year homes were built: 1978. U.S. Census Bureau, American Community Survey 2024 5-year estimates (2020-2024), table B25035, via Census Reporter API. Read Oct 5, 2026.
  3. 3.Hurricane Matthew (2016). NOAA National Hurricane Center, Tropical Cyclone Report: Hurricane Matthew (AL142016). Read Oct 5, 2026.
  4. 4.Housing units (ACS 5-year): 32,492. U.S. Census Bureau, American Community Survey 2024 5-year estimates (2020-2024), table B25001, via Census Reporter API. Read Oct 5, 2026.
  5. 5.NOAA NCEI U.S. Climate Normals 1991-2020 (access data service). Read Oct 5, 2026.
  6. 6.NOAA NCEI U.S. Climate Normals 1991-2020 (access data service). Read Oct 5, 2026.
  7. 7.2023 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").
  8. 8.2023 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).
  9. 9.2023 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").
  10. 10.2023 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").
  11. 11.2023 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).
  12. 12.ask.ifas.ufl.edu. Read Oct 5, 2026.
  13. 13.blogs.ifas.ufl.edu. Read Oct 5, 2026.
  14. 14.ufdcimages.uflib.ufl.edu. Read Oct 5, 2026.
  15. 15.thig.com. Read Oct 5, 2026.
  16. 16.consumerreports.org. Read Oct 5, 2026.
  17. 17.NOAA Atlas 14 (HDSC Precipitation Frequency Data Server). Read Oct 5, 2026.
  18. 18.NOAA Atlas 14 Volume 9 version 2, partial-duration intensity estimates at the Kendall 2020 Census internal point (25.6673, -80.3528), NOAA Hydrometeorological Design Studies Center. Read Oct 5, 2026.
  19. 19.NOAA Atlas 14 Volume 9 version 2, partial-duration 24-hour depth estimates at the Kendall 2020 Census internal point (25.6673, -80.3528), NOAA Hydrometeorological Design Studies Center. Read Oct 5, 2026.
  20. 20.U.S. Census Bureau, American Community Survey 2024 5-year estimates (2020-2024), table B25001, via Census Reporter API, U.S. Census Bureau (via Census Reporter). Read Oct 5, 2026.
  21. 21.NOAA National Hurricane Center, Tropical Cyclone Report: Hurricane Matthew (AL142016), NOAA National Hurricane Center. Read Oct 5, 2026.
  22. 22.U.S. Census Bureau, American Community Survey 2024 5-year estimates (2020-2024), table B25034, via Census Reporter API, U.S. Census Bureau (via Census Reporter). Read Oct 5, 2026.
  23. 23.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.
  24. 24.Miami-Dade County Regulatory and Economic Resources (RER) - Building & Permits, Miami. Read Oct 5, 2026.
  25. 25.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.
  26. 26.miamidade.gov, miamidade.gov. Read Oct 5, 2026.
  27. 27.Wikipedia, 'Kendall, Florida' (revision 1374451126), Wikipedia. Read Oct 5, 2026.
  28. 28.2023 Florida Building Code, Building, 8th ed., Chapter 15 (UpCodes viewer, unofficial transcription), UpCodes (Florida Building Code transcription). 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 National Hurricane Center, Tropical Cyclone Climatology, NOAA National Hurricane Center. Read Oct 5, 2026.
  32. 32.NOAA National Hurricane Center, Tropical Cyclone Report: Hurricane Irma (AL112017), NOAA National Hurricane Center. Read Oct 5, 2026.
  33. 33.NOAA National Hurricane Center, Tropical Cyclone Report: Hurricane Dorian (AL052019), NOAA National Hurricane Center. Read Oct 5, 2026.
  34. 34.Florida Statutes, section 489.113 (2026), Florida Legislature. Read Oct 5, 2026.
  35. 35.Florida Statutes, section 713.135 (2026), Florida Legislature. Read Oct 5, 2026.
  36. 36.2023 Florida Building Code, Building, 8th ed., Chapter 1 (UpCodes viewer, unofficial transcription), UpCodes (Florida Building Code transcription). Read Oct 5, 2026.
  37. 37.Citizens Property Insurance Corporation, inspections FAQ (updated 2026-03-17), Citizens Property Insurance. Read Oct 4, 2026.
  38. 38.NOAA Atlas 14 at Kendall: 10.9 in/hr (5-minute, 10-year). NOAA Atlas 14 Precipitation Frequency Data Server. Read Oct 5, 2026.

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Gutters in Kendall

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