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Gutters · Alachua County

Gutters in Alachua County, FL

At Gainesville, a 10-year storm can deliver rain at 9.2 inches an hour for five minutes. A gutter overflows during that short burst, not over the 48.31-inch year. Alachua County homeowners should size gutters and downspouts for that rate, then keep them clear of oak leaves and pine needles.

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Updated October 2026

Aerial view of a green wetland park with a winding road, blue water channel and scattered clouds overhead.
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: Wetlands Park by Flatwoods 36, CC BY-SA 4.0, cropped

Gutters in Alachua County, in short

Gainesville's rain can hit 9.2 inches an hour for five minutes in a 10-year storm. Choose gutters and downspouts for that burst. Florida code requires gutters on eaves under 6 inches and downspouts that discharge at least 1 foot from the wall. Clean them at least twice a year.

Sources for this answer

Alachua County figures

The Alachua County numbers behind this page

Share of homes built before 1980
34.5%
Water share of total area
9.6%
Mobile homes, share of housing units
6.3%
Median year homes were built
1988

Rain and sizing

How Gainesville rain should shape your gutter size

Gainesville's yearly normal is 48.31 inches of precipitation, and 20.64 inches of that falls from June through August. Rain of 0.10 inch or more arrives on about 73.2 days a year. The danger is the five-minute burst in the 10-year storm, which NOAA Atlas 14 puts at 9.2 inches an hour.

Under FBC-Plumbing 1106.6, a gutter is sized from the flow its roof sheds. Take a half-round 5-inch at a 1/8 inch per foot slope: its table capacity is 74 gallons a minute. The 6-inch version is rated at 110. That is about 49 percent more capacity for one extra inch.

Downspouts matter as much as the gutter. The plumbing table rates a 3-inch round leader at 92 gallons a minute and a 4-inch round at 192. Count half of any wall area that drains rain down onto the roof. Ask any roofer for the sizing basis in writing before you sign.

Code rules

Downspout and gutter rules in the Florida code

Florida Building Code Residential R318.5 calls for gutters with downspouts on buildings whose eaves project less than 6 inches. Rakes at a gable end and a roof sitting above another roof are exempt. Each downspout must empty at least 1 foot from the wall, through buried pipe, a tail extension or a splash block.

The 1-foot rule sits in a termite-protection section, so it protects the foundation as well as the siding. With 34.5 percent of county homes built before 1980, many older houses likely have short or missing extensions. That is a quick thing to check from the yard.

For one- and two-family dwellings, R903.4.2 calls for metal or approved plastic gutters with lapped, soldered or caulked joints. They must be fastened with corrosion-resistant hardware compatible with the gutter metal. Mixed metals corrode each other, so ask what the hangers are made of.

Leaves and trees

Live oaks, pine needles and how often to clean

Southern live oak grows 60 to 80 feet tall with a spread of 60 to 120 feet, and UF/IFAS lists its leaves and fruit as a litter problem. One oak can shade a whole roof. Oak pollen peaks in March and April, and pine needles fall most from September through November.

A sensible rhythm under heavy canopy has three cleanings: late April to May after leaf drop, before June, and after the autumn needle peak. Hurricane Debby brought 7.19 inches to the UF campus in 2024, so clear gutters before the wet months.

Screens help only some. Consumer Reports found fine-mesh screens beat coarse ones, but even the top scorer was only middling in a severe downpour. Under oaks, plan on ladder work whichever product you pick.

Drainage and lots

Where roof water goes on Alachua County lots

Alachua County has no coastline, yet water covers 9.6 percent of its total area. Irma set record Santa Fe River flood stages near High Springs in 2017. Gutters cannot stop river flooding, but they keep roof water from adding to it at the foundation.

Newberry and High Springs have newer housing, with 43 percent and 29 percent of units built since 2010. Countywide the share is 13 percent. Newer lots usually follow R318.5 from the start. Older Gainesville homes more often need extensions added.

Mobile homes are 6.3 percent of county housing units. Many have low eaves where water lands close to the skirting. Confirm with the Alachua County Building Division what applies to your unit, since municipalities may issue their own permits.

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Rain on your roof

How much water an Alachua County roof sheds

Rain on your roof

Preset: 5.81 inches, the 10-year 24-hour rain (NOAA Atlas 14 at Gainesville).

7,239 gallons run off that roof, all of it toward the gutters and downspouts.

Math: square feet × inches × 0.623 gallons.

Gutters

Gutters by town in Alachua County

Roof cost estimator

See a ballpark for your roof

Answer a few questions about your roof and see a ballpark built from published Florida cost data, then get your written estimate.

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Ranges come from published Florida cost guides. They are not South Fork Roofing's prices.

Questions

Gutters in Alachua County: questions

What size gutters do I need in Alachua County?

Size them for the short burst, not the yearly total. NOAA Atlas 14 gives Gainesville 9.2 inches an hour over five minutes in a 10-year storm. Under the plumbing code, a 6-inch half-round gutter at 1/8 inch per foot carries 110 gallons a minute, against 74 for a 5-inch. Ask your roofer to show the roof area and slope behind the size they pick.

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

Related: Gutters

How far must a downspout discharge from my house?

At least 1 foot from the sidewall. Under Florida Building Code Residential R318.5, that water may be handled by buried pipe, a tail extension, or a splash block. You will find this requirement inside the termite-protection chapter. If your downspout dumps at the foundation, add an extension. Check with the Alachua County Growth Management Building Division if you are unsure what applies to your property.

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

Related: Gutters

How often should I clean gutters under live oaks?

Plan on at least twice a year, and more under heavy canopy. A Florida insurer recommends spring and fall cleaning. Under Gainesville oaks, clean after the late April to May leaf drop, before June, and after the autumn pine-needle peak. Hurricane Debby put 7.19 inches of rain on the UF campus in 2024, so the pre-June cleaning matters most.

Source: thig.com, read Oct 5, 2026

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Do all houses in Alachua County need gutters?

No. Florida Building Code Residential R318.5 requires gutters with downspouts where eaves project less than 6 inches. Homes with wide overhangs may not need them by code, though water can still pool at the foundation. County homes have a median build year of 1988, so many have older eaves. Measure your own eave depth before assuming.

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

Related: Gutters

Can gutters stop flooding after storms like Debby?

No. Hurricane Debby in 2024 put 7.19 inches of rain on the UF campus and flooded homes across the county. Gutters move roof water away from the wall, which helps, but they cannot handle floodwater rising from the ground. Clean gutters before storm season so they carry what the roof sheds.

Source: NHC TCR AL042024; NWS Jacksonville, County Impacts narratives (Post Tropical Cyclone Report); FEMA OpenFEMA DisasterDeclarationsSummaries v2 (designatedArea = county), read Oct 5, 2026

Related: Gutters

Alachua County

More in Alachua County

Sources for this page(52)
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  39. 39.Alachua County Growth Management - Building Division, Alachua County Growth Management. Read Oct 5, 2026.
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Gutters in Alachua County

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