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Gutters · Casselberry

Gutters in Casselberry, FL

In a 10-year storm, rain in Casselberry can fall at 8.71 inches an hour for five minutes. That burst is the number that decides whether your gutters overflow. A gutter sized for steady rain can still spill water onto your walls and foundation when the sky opens up in June or during a tropical system.

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Updated October 2026

Tan city hall building with an American flag, leafy trees, and a brick walkway under blue sky.
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: Casselberry City Hall FL by Connor J Williams, CC BY 2.0, cropped

Rainfall and sizing

How hard Casselberry rain falls and what it means for gutter size

Casselberry gets more rain than many Florida towns. Sanford, about 15 miles north, averages 54.03 inches a year, and Orlando Sanford Airport averages 49.63 inches. Roughly 45 percent of that falls from June through August, by our arithmetic on the 1991-2020 normals. Gutters here work through long wet stretches, not just occasional storms.

Close-up of a fine stainless micro-mesh gutter guard over a white gutter at a shingle roof edge, with oak leaves, catkins and raindrops resting on top (illustration)Illustration

Illustration: micro mesh guard

Plumbing code sizes horizontal gutters from the roof's flow rate, using capacity tables. On a half-round gutter at 1/8 inch per foot slope, a 6-inch size carries 110 gallons per minute while a 5-inch size carries 74, about 49 percent more by our arithmetic. For a Casselberry roof that drains a large plan area, stepping up to 6 inches is often the safer choice.

The design rainfall basis matters. At Atlas 14 rates for this area, a 6-inch gutter serves far less roof area when sized on the 5-minute, 10-year burst than when sized on a 1-hour, 100-year basis. Ask your installer which basis the sizing used, and whether the downspouts were sized to match.

Code and drainage

Downspout rules and where the water must go

Florida's residential code requires gutters with downspouts on buildings with eaves under 6 inches, except at gable rakes or where one roof sits above another. Each downspout has to end clear of the wall. Water dumped against the foundation in a Casselberry lot with sandy soil can undermine footings and soak slabs.

  • End each downspout a foot or more from the wall, using piping, tail extensions or splash blocks.
  • Match leaders to the gutter. Code gives a 4 inch round leader 192 gallons per minute, and a 3 inch round one 92.
  • Add half the area of any vertical wall that sheds rain onto the roof when sizing.

Debris and upkeep

On Casselberry lots, roofs collect leaves, pine needles and debris that call for regular cleaning

Southern live oaks are common shade trees here. They can reach 60 to 80 feet tall with a 60 to 120 foot spread, and their leaves are a litter problem. Oak and pine pollen add to the load from March into spring, and pine needles drop heaviest in autumn. Debris clogs gutters faster under these trees.

On a Casselberry lot under heavy canopy, a clean after the spring oak drop, before the June through September storm season, and after the autumn needle peak keeps water moving. Clogged gutters can cause water damage, mold, pests and foundation problems, so the schedule matters more here than the calendar.

Rain on your roof

Preset: 6.16 inches, the 10-year 24-hour rain (NOAA Atlas 14 at Casselberry).

7,675 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 Casselberry: questions

How big should gutters be for Casselberry rain?

Size them for the heavy burst, not the average. In a 10-year storm, rain here can fall at 8.71 inches an hour for five minutes. Plumbing code sizes gutters from roof flow using capacity tables, and a 6-inch half-round at 1/8 inch per foot carries 110 gallons per minute. Ask your installer which rainfall basis the sizing used and whether the downspouts match. Confirm the local requirement with the City of Casselberry Building Division.

Source: NOAA Atlas 14 Volume 9 version 2, partial-duration intensity estimates at the Casselberry 2020 Census internal point (28.6612, -81.3219), read Oct 5, 2026

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Where should downspouts drain on a Casselberry lot?

Away from the house, with the outlet at least 1 foot from the sidewall. Water is 7.2 percent of Casselberry's total area, and the town sits among lakes, so soil near many homes stays wet after storms. Piping, tail extensions or splash blocks can carry water clear of the foundation. Check that each downspout also empties away from a neighbor's property.

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 gutters be cleaned under oak trees in Casselberry?

Plan on at least two cleanings a year, more under overhanging branches. Southern live oaks here can reach 60 to 80 feet tall, and their leaves are a litter problem. Orlando Sanford Airport records 22.25 inches of rain from June through August, so clean before that stretch starts. A late April or May cleaning after the oak drop is a practical start, with another after autumn needle fall.

Source: thig.com, read Oct 5, 2026

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Are gutters required on a new Casselberry home?

Florida's residential code requires gutters with downspouts on buildings with eaves under 6 inches, except at gable end rakes or where one roof sits above another. Each downspout must end clear of the wall. Only 10.9 percent of Casselberry homes date from 2010 or later, so most gutters here are on older houses. Confirm how this applies to your build with the City of Casselberry Building Division.

Source: 2023 Florida Building Code, Residential, 8th ed., Chapter 3 (UpCodes viewer, unofficial transcription), read Oct 5, 2026

Related: Gutters

Nearby

Gutters near Casselberry

Sources for this page(36)
  1. 1.NOAA NCEI, U.S. Climate Normals 1991-2020 (annual/seasonal), access-data API. Read Oct 5, 2026.
  2. 2.U.S. Census Bureau, 2020 Census (TIGERweb tigerWMS_Census2020 MapServer: POP100, HU100, AREALAND, AREAWATER). Read Oct 5, 2026.
  3. 3.Permit office: City of Casselberry Building Division. City of Casselberry Building Division. Read Oct 10, 2026.
  4. 4.Water share of total area: 7.2%. U.S. Census Bureau, 2020 Census (TIGERweb tigerWMS_Census2020 MapServer: POP100, HU100, AREALAND, AREAWATER). Read Oct 5, 2026.
  5. 5.U.S. Census Bureau, 2020 Census (TIGERweb tigerWMS_Census2020 MapServer: POP100, HU100, AREALAND, AREAWATER). Read Oct 5, 2026.
  6. 6.Median year homes were built: 1983. U.S. Census Bureau, American Community Survey 2020-2024 5-year estimates (acs2024_5yr), via Census Reporter API. Read Oct 5, 2026.
  7. 7.NOAA National Centers for Environmental Information. 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.NOAA Atlas 14 (HDSC Precipitation Frequency Data Server). Read Oct 5, 2026.
  10. 10.2023 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).
  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. 12.2023 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.ask.ifas.ufl.edu. Read Oct 5, 2026.
  14. 14.blogs.ifas.ufl.edu. Read Oct 5, 2026.
  15. 15.ufdcimages.uflib.ufl.edu. Read Oct 5, 2026.
  16. 16.thig.com. Read Oct 5, 2026.
  17. 17.NOAA Atlas 14 Volume 9 version 2, partial-duration intensity estimates at the Casselberry 2020 Census internal point (28.6612, -81.3219), NOAA Hydrometeorological Design Studies Center. Read Oct 5, 2026.
  18. 18.City of Casselberry Building Division, City of Casselberry Building Division. Read Oct 5, 2026.
  19. 19.U.S. Census Bureau, American Community Survey 2020-2024 5-year estimates (acs2024_5yr), via Census Reporter API, U.S. Census Bureau (via Census Reporter). Read Oct 5, 2026.
  20. 20.NOAA Atlas 14 Volume 9 version 2, partial-duration 24-hour depth estimates at the Casselberry 2020 Census internal point (28.6612, -81.3219), NOAA Hydrometeorological Design Studies Center. Read Oct 5, 2026.
  21. 21.U.S. Census Bureau, American Community Survey 2020-2024 5-year estimates (acs2024_5yr), via Census Reporter API, table B25024, U.S. Census Bureau (via Census Reporter). Read Oct 5, 2026.
  22. 22.U.S. Census Bureau, American Community Survey 2020-2024 5-year estimates (acs2024_5yr), via Census Reporter API, tables B25034/B25035, U.S. Census Bureau (via Census Reporter). Read Oct 5, 2026.
  23. 23.Florida Statutes, section 627.7011 (2026), Florida Legislature. Read Oct 4, 2026.
  24. 24.2023 Florida Building Code, Building, 8th ed., Chapter 15 (UpCodes viewer, unofficial transcription), UpCodes (Florida Building Code transcription). Read Oct 5, 2026.
  25. 25.2023 Florida Building Code, Building, 8th ed., Chapter 1 (UpCodes viewer, unofficial transcription), UpCodes (Florida Building Code transcription). Read Oct 5, 2026.
  26. 26.FRSA, "New 2023 FBC Eighth Edition is Now in Effect", 2024-02-13, floridaroof.com. Read Oct 5, 2026.
  27. 27.Miami-Dade County RER notice, Miami. Read Oct 5, 2026.
  28. 28.NWS Melbourne, Lightning Information Center, National Weather Service. Read Oct 5, 2026.
  29. 29.NWS Melbourne, Post Tropical Cyclone Report: Hurricane Irma (2017), National Weather Service. Read Oct 5, 2026.
  30. 30.NWS Melbourne, Post Tropical Cyclone Report: Hurricane Ian (2022), National Weather Service. Read Oct 5, 2026.
  31. 31.Seminole County Government, Building Division, Seminole County Government. Read Oct 5, 2026.
  32. 32.City of Casselberry, History, City of Casselberry. Read Oct 5, 2026.
  33. 33.Florida Statutes, section 713.135 (2026), Florida Legislature. Read Oct 5, 2026.
  34. 34.Florida Statutes, section 489.113 (2026), Florida Legislature. Read Oct 5, 2026.
  35. 35.Florida Statutes, section 553.842 (2026), Florida Legislature. Read Oct 5, 2026.
  36. 36.NOAA Atlas 14 at Casselberry: 8.71 in/hr (5-minute, 10-year). NOAA Atlas 14 Precipitation Frequency Data Server. Read Oct 5, 2026.

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Gutters in Casselberry

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