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Gutters · Ojus

Gutters in Ojus, FL

At 11 inches an hour, a five-minute downpour in a 10-year storm is the burst Ojus gutters have to survive, per NOAA Atlas 14 figures for this town. Gutters and downspouts sized for ordinary rain can overflow in that burst. The size you need depends on how fast water hits the roof and how much roof area drains into each run.

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Updated October 2026

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.

Sizing basics

Matching Ojus rain rates to gutter capacity

The plumbing code sizes horizontal gutters from the flow off the roof, not from the gutter's look. Table 1106.6 lists a 5-inch half-round gutter at 1/8 inch per foot slope as carrying 74 gallons per minute, while a 6-inch version at the same slope carries 110. That is about 49 percent more capacity from one size step.

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

Illustration: rotted fascia

Downspouts follow their own table. A 2 1/2 by 3 inch leader handles 92 gallons per minute only at the 2 1/2 by 3 inch or 3 inch round size, and the 2 by 2 inch size is limited to 30. Add half the area of any wall that sheds rain onto the roof before you pick sizes.

Design basis matters here. Using the 100-year, 1-hour rate of 3.96 inches an hour, a 6-inch half-round at 1/8 inch per foot serves about 2,671 square feet of roof. Using the 5-minute, 10-year burst of 9.55 inches an hour that SMACNA-style sizing uses, the same gutter serves about 1,107 square feet. The answer changes by more than two times, so ask your installer which basis the quote uses.

Code and discharge

Downspout discharge rules for Ojus lots

Florida's residential code calls for gutters with downspouts on buildings whose eaves project less than 6 inches. Water leaving a leader must travel at least 1 foot from the sidewall, whether through buried pipe, a tail extension or a splash block.

In a town where the 1970 median build year suggests many older homes still have original metal fascia and aging hangers, confirm with the Miami-Dade building office that any repair or replacement meets the current rule before work starts.

Debris and upkeep

Leaves, trees and cleaning schedule in Ojus

Live oaks in this region are semi-evergreen and shed a steady litter of leaves and fruit. The UF/IFAS note calls that litter a problem, and mature trees can reach 60 to 80 feet with spreads of 60 to 120 feet. Oak and pine pollen peaks in March and April, so gutters fill with fine material in spring.

  • Clean after the late April to May oak leaf drop and pollen.
  • Schedule a pass ahead of the June to September wet season.
  • Clean after the late November to December pine-needle peak under heavy canopy.

At Miami International Airport, 76.6 percent of the 67.41 inches of normal annual rain falls from May to October. That makes the spring cleaning the one that counts, because debris left in a run then meets the heaviest months of the year.

Rain on your roof

Preset: 8.78 inches, the 10-year 24-hour rain (NOAA Atlas 14 at Ojus).

10,940 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 Ojus: questions

How hard does it rain in Ojus?

A 10-year storm in Ojus drops rain at 11 inches an hour for five minutes. A 1-hour rain in that storm falls at 3.5 inches an hour. The 24-hour total for a 10-year storm is 8.78 inches. These are NOAA Atlas 14 figures for this town, so your gutter sizing should start from them rather than from a general Florida rate.

Source: NOAA Atlas 14 Volume 9 version 2, partial-duration intensity estimates at the Ojus 2020 Census internal point (25.9541, -80.1717), read Oct 5, 2026

Related: Gutters

What size gutters do I need on an Ojus home?

Size depends on roof area and slope as well as rain rate. Under the plumbing code table, a 5-inch half-round at 1/8 inch per foot carries 74 gallons per minute and a 6-inch carries 110. Ask your installer which rainfall basis the quote uses, because a 100-year hourly basis and a 10-year burst basis give very different roof areas per gutter.

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

Related: Gutters

Where should downspout water go in Ojus?

Florida's residential code requires downspout water to leave at least 1 foot from the sidewall, using buried pipe, tail extensions or splash blocks. On a town where 78.4 percent of housing units were built before 1980, older lots often show pooling at the foundation, so check the discharge point before you choose a method.

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 under trees in Ojus?

Plan on at least two cleanings a year, and more under overhanging trees, which is the insurer guidance Florida homeowners are given. After the spring oak leaf drop and before the wet season is the pass that matters most. In Ojus, where 59.5 percent of housing units are in buildings with 10 or more units, a shared schedule for the whole roof line prevents repeat overflow.

Source: thig.com, read Oct 5, 2026

Related: Gutters

Nearby

Gutters near Ojus

Sources for this page(34)
  1. 1.Median year homes were built: 1970. 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.Permit office: Miami-Dade County Regulatory and Economic Resources (RER) - Building & Permits. Miami-Dade County Regulatory and Economic Resources (RER) - Building & Permits. Read Oct 10, 2026.
  3. 3.U.S. Census Bureau, American Community Survey 2024 5-year estimates (2020-2024), table B25035, via Census Reporter API. Read Oct 5, 2026.
  4. 4.NOAA NCEI U.S. Climate Normals 1991-2020 (access data service). Read Oct 5, 2026.
  5. 5.NOAA NCEI U.S. Climate Normals 1991-2020 (access data service). 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.U.S. Census Bureau, American Community Survey 2024 5-year estimates (2020-2024), table B25024, via Census Reporter API. Read Oct 5, 2026.
  8. 8.2023 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").
  9. 9.bergerbp.com. Read Oct 5, 2026.
  10. 10.NOAA Atlas 14 (HDSC Precipitation Frequency Data Server). Read Oct 5, 2026.
  11. 11.2023 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).
  12. 12.2023 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").
  13. 13.2023 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).
  14. 14.law.cornell.edu. Read Oct 5, 2026.
  15. 15.ask.ifas.ufl.edu. Read Oct 5, 2026.
  16. 16.blogs.ifas.ufl.edu. Read Oct 5, 2026.
  17. 17.ufdcimages.uflib.ufl.edu. Read Oct 5, 2026.
  18. 18.thig.com. Read Oct 5, 2026.
  19. 19.NOAA Atlas 14 Volume 9 version 2, partial-duration intensity estimates at the Ojus 2020 Census internal point (25.9541, -80.1717), NOAA Hydrometeorological Design Studies Center. Read Oct 5, 2026.
  20. 20.Miami-Dade County Regulatory and Economic Resources (RER) - Building & Permits, Miami. Read Oct 5, 2026.
  21. 21.NOAA Atlas 14 Volume 9 version 2, partial-duration 24-hour depth estimates at the Ojus 2020 Census internal point (25.9541, -80.1717), NOAA Hydrometeorological Design Studies Center. Read Oct 5, 2026.
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  23. 23.Citizens Property Insurance Corporation, inspections FAQ (updated 2026-03-17), Citizens Property Insurance. Read Oct 4, 2026.
  24. 24.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.
  25. 25.Florida Statutes, section 553.842 (2026), Florida Legislature. Read Oct 5, 2026.
  26. 26.2023 Florida Building Code, Building, 8th ed., Chapter 15 (UpCodes viewer, unofficial transcription), UpCodes (Florida Building Code transcription). Read Oct 5, 2026.
  27. 27.NOAA National Hurricane Center, Tropical Cyclone Climatology, NOAA National Hurricane Center. Read Oct 5, 2026.
  28. 28.NOAA National Hurricane Center, Tropical Cyclone Report: Hurricane Irma (AL112017), NOAA National Hurricane Center. Read Oct 5, 2026.
  29. 29.Wikipedia, 'Ojus, Florida' (revision 1378006523), Wikipedia. Read Oct 5, 2026.
  30. 30.FRSA, "New 2023 FBC Eighth Edition is Now in Effect", 2024-02-13, floridaroof.com. Read Oct 5, 2026.
  31. 31.Miami-Dade County RER notice, Miami. Read Oct 5, 2026.
  32. 32.Florida Building Commission, Florida Building Commission. Read Oct 5, 2026.
  33. 33.miamidade.gov, miamidade.gov. Read Oct 5, 2026.
  34. 34.NOAA Atlas 14 at Ojus: 11 in/hr (5-minute, 10-year). NOAA Atlas 14 Precipitation Frequency Data Server. Read Oct 5, 2026.

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Gutters in Ojus

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