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Commercial roofs ยท Orange County

Commercial roofing in Orange County, FL

Only 54.1 percent of Orange County's 586,805 housing units are single-family detached homes; the rest are attached homes, apartment buildings and mobile homes. Commercial roofing in Orange County covers those multi-unit roofs plus the stores and offices around them, under Florida's statewide code and outside the High-Velocity Hurricane Zone.

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Updated October 2026

A flat roof covered in a gray granulated cap sheet, with rooftop units and vents in the distance and tree shadows across the surface.

Commercial roofs in Orange County, in short

Orange County is not in the HVHZ, so commercial roofs follow Chapter 15 of the Florida Building Code, with wind loads from Chapter 16. New low-slope roofs need at least a quarter inch of slope per foot and must drain within 48 hours of rain. Condo buildings three habitable stories or taller need a structural integrity reserve study every 10 years, and the roof heads its list.

Sources for this answer

Orange County figures

The Orange County numbers behind this page

Single-family detached share of housing units
54.1%
Housing units (ACS 5-year)
586,805
Owner-occupied share of occupied homes
56.8%

Building stock

Who makes the roof decision on Orange County buildings

Owners live in 56.8 percent of the county's occupied homes. The rest are rented, so landlords and property managers make many of the roof decisions here, and condo and homeowner associations make more, along with the owners of shops, offices and warehouses.

Their questions differ from a homeowner's. A board needs condition reports for its reserve study, a property manager needs a roof that drains, and every owner needs a permit trail the next buyer or insurer can follow.

Florida code

Low-slope roof rules on an Orange County building

New low-slope roofs of every common membrane type need a minimum design slope of one-quarter inch per foot, or 2 percent. Decks and coverings are designed for Chapter 16 wind loads, and metal edge systems on those roofs must be tested to ANSI/SPRI ES-1 or RAS 111.

A recover is off the table in several cases: when the existing roof is water-soaked or too deteriorated to serve as a base, when it already has two or more layers, or when it is wood shake, slate or tile. A moisture survey confirmed with core samples shows where the wet areas are before anyone prices a recover.

Rooftop units have their own rule. A local government may not make existing roof-mounted mechanical equipment meet current code, except during reroofing when a noncompliant unit is being replaced or moved.

Drainage

Draining a flat roof through Orlando's summer rain

Orange County supplies plenty of water to pond: Orlando International averages 51.45 inches a year, 23.20 of it from June through August. The code defines positive drainage as enough slope to clear the roof within 48 hours of rain, and where parapets would trap water if the main drains back up, secondary overflow drains or scuppers are required.

Storm drainage is sized on a 100-year hourly rainfall rate, from the plumbing code's map or approved local weather data. For reference, NOAA's Atlas 14 gives Orlando a 100-year, 1-hour rate of 3.93 inches an hour.

Permits split the same way as for houses: the Orange County Division of Building Safety outside city limits, and city departments such as Orlando's Permits & Inspections inside them. A permit becomes invalid if work does not start within 6 months of issue or stops for 6 months.

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Commercial roofing by town in Orange County

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Questions

Commercial roofing in Orange County: questions

Do commercial roofs in Orange County need Miami-Dade NOA products?

No. Miami-Dade Notices of Acceptance belong to the High-Velocity Hurricane Zone, which the Florida Building Code limits to Broward and Miami-Dade counties. In Orange County, roofing products need Florida's statewide product approval, which anyone can look up by FL number in the Florida Building Commission's search. Ask for the FL numbers on every bid. In Belle Isle, the city's contracted building provider also asks for the approval and installation instructions with each roof permit.

Does the 25% roof rule apply to commercial buildings in Orange County?

Yes. The commercial roofing chapter of the Florida Building Code carries the same cap as the residential one: no more than 25 percent of a roof or roof section repaired, replaced or recovered in any 12 months unless the whole section is redone. The 2007-code exception applies too, and state law bars a local government from amending it by ordinance. That holds whether the permit comes from the Orange County Division of Building Safety or from a city such as Winter Park or Apopka.

When does an Orange County condo board need a reserve study that covers the roof?

When the building has three or more habitable stories. Fla. Stat. 718.112(2)(g) requires a residential condominium association to complete a structural integrity reserve study at least every 10 years for each such building, and the roof is the first item on the statute's list. The study rests on a visual inspection and estimates each item's remaining useful life, so recent roof condition reports and permit records make it easier. With only 54.1 percent of the county's housing units in single-family detached homes, many owners here share a roof with neighbors.

Can a roof coating replace a new roof on an Orange County building?

Sometimes it buys time, but the roof decides. Under Florida law a coating sold to stop leaks or extend roof life is roofing work, and the code requires coatings to meet its fire classification and listed product standards. A coating does not fix a water-soaked roof, which cannot serve as a base. Check drainage first: a roof that still ponds 48 hours after rain needs a coating made for ponding, and Orlando's 23.20 inches of June-to-August rain will find every low spot.

Orange County

More in Orange County

Sources for this page(30)
  1. 1.Single-family detached share of housing units: 54.1%. U.S. Census Bureau, American Community Survey 2020-2024 5-year estimates (acs2024_5yr), via Census Reporter API. Read Oct 5, 2026.
  2. 2.Housing units (ACS 5-year): 586,805. U.S. Census Bureau, American Community Survey 2020-2024 5-year estimates (acs2024_5yr), via Census Reporter API. Read Oct 5, 2026.
  3. 3.Owner-occupied share of occupied homes: 56.8%. U.S. Census Bureau, American Community Survey 2020-2024 5-year estimates (acs2024_5yr), via Census Reporter API. Read Oct 5, 2026.
  4. 4.City of Belle Isle permitting and inspections portal (UES, the city's contracted building provider). Read Oct 5, 2026.
  5. 5.NOAA NCEI, U.S. Climate Normals 1991-2020 (annual/seasonal), access-data API. Read Oct 5, 2026.
  6. 6.Permit office: Orange County Division of Building Safety. Orange County Division of Building Safety. Read Oct 5, 2026.
  7. 7.FBC-Building 2023 Chapter 2 definitions. Read Oct 5, 2026. FBC text read from UpCodes (unofficial transcription): check floridabuilding.org or the ICC viewer before quoting (spec 8.7).
  8. 8.2023 Florida Building Code, Building, 8th ed., Chapter 15 (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 C-14 (the research cites it "as C-14").
  9. 9.FBC-B 2023 Ch. 15. 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 C-14 (the research cites it "as C-14").
  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).
  11. 11.Professional Roofing magazine (NRCA). Read Oct 5, 2026.
  12. 12.2023 Florida Building Code, Building, 8th ed., Chapter 1 (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 C-3 (the research cites it "as C-3").
  13. 13.Florida Statutes, section 718.112 (2026). Read Oct 5, 2026.
  14. 14.Florida Statutes, section 553.842 (2026). Read Oct 5, 2026.
  15. 15.Florida Building Commission. Read Oct 5, 2026.
  16. 16.Fla. Stat. 489.105(3)(e). Read Oct 5, 2026.
  17. 17.apoc.com. Read Oct 5, 2026.
  18. 18.NOAA Atlas 14 Volume 9 (Southeastern States) version 2, partial-duration series point estimates, via the HDSC PFDS endpoint (ops/research/v3/services/data/noaa-atlas14-florida-rainfall.tsv), NOAA Hydrometeorological Design Studies Center. Read Oct 5, 2026. Orlando point (28.54, -81.38), the default Atlas 14 point for Orange County.
  19. 19.FBCR 2023 Ch. 9. Read Oct 4, 2026.
  20. 20.OIR form. Read Oct 4, 2026.
  21. 21.FRSA, "New 2023 FBC Eighth Edition is Now in Effect", 2024-02-13. Read Oct 5, 2026.
  22. 22.Miami-Dade County RER notice. Read Oct 5, 2026.
  23. 23.Senate SB 808 staff analysis pp. 3-4. Read Oct 5, 2026.
  24. 24.Florida Building Commission, "Florida Building Code Effective Dates". Read Oct 5, 2026.
  25. 25.Florida Statutes, section 627.7011 (2026). Read Oct 4, 2026.
  26. 26.Citizens Property Insurance Corporation, inspections FAQ. Read Oct 4, 2026.
  27. 27.NOAA National Hurricane Center, Tropical Cyclone Climatology. Read Oct 5, 2026.
  28. 28.Owens Corning, "3 Signs That It's Time to Replace Your Roof". Read Oct 5, 2026.
  29. 29.FBC-B 2023 Ch. 1. Read Oct 5, 2026.
  30. 30.U.S. Census Bureau, ACS 2020-2024 5-year, table B25035 (median year structure built) for Winter Park, Conway, Fairview Shores, Belle Isle, Edgewood, Eatonville, Pine Castle, Horizon West, Oakland, Meadow Woods and Winter Garden, via Census Reporter API, U.S. Census Bureau. Read Oct 5, 2026. Used only to compare each town's median year built with the county's 1994 median; no town figure is printed on the county pages.

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Commercial roofing in Orange County

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