Flat Roof Repair in South Florida

A flat roof rarely fails all at once. Water usually gets in where the membrane stops, turns a corner or has a hole cut in it: parapet walls, edge metal, drains and scuppers, AC stands and pipe boots. A good repair finds that spot, fixes it with materials that match the roof system, and leaves the water a clear way off the roof. In Florida, a repair also has to follow the same code as a new roof, and in Miami-Dade and Broward that code is stricter.

What we look for

• Ponding. Water that stays in the same place for days after rain. It speeds up wear, and a good repair leaves the roof draining at least as well as before. In Miami-Dade and Broward, the code says a repair may not create additional ponding (FBC Section 1521.3).¹
• Blisters and soft spots. Air or water trapped under the membrane. Before new roofing goes over a blister, it has to be cut or scraped open and the remaining material secured.²
• Open seams and cracked flashing at parapet walls, where the flat roof meets a higher wall, and at the edge metal.
• Clogged or rusted drains and scuppers. Rusted or damaged vent flashing, metal edging, drain outlets, collars and counterflashing may not be reinstalled; they are replaced.²
• AC equipment. In Miami-Dade and Broward, condensate lines may not drain onto the roof, and conduit and piping must run at least 8 inches above the finished roof.¹ Leaks around AC stands and lines are worth checking on any flat roof.

Does the repair need a permit?

Start with the state rule: Florida law requires a permit to repair a building unless a law says otherwise.³ The code’s statewide list of permit exemptions has no roofing item; ordinary minor repairs can skip a permit only with the building official’s approval.⁴ In Miami-Dade and Broward, the code requires a permit for any roofing repair or maintenance except what Section 105 allows.¹

Here is what the counties allow:

• Unincorporated Miami-Dade. The county lets a licensed roofing contractor replace or repair roof covering without a permit when the work is no more than $2,000 in materials and labor and no more than two roofing squares (200 square feet).⁵
• Broward. The county’s amendments to the code say no permit is needed for maintenance or repair of a roof covering up to $1,500, as determined by the building official.⁶
• Anywhere in Florida since July 1, 2026. HB 803 requires building departments to exempt single-family work valued under $7,500 when the owner or contractor files a written request with a copy of the contract. It does not apply if any part of the property is in a flood hazard area, or to structural work, or to a job split up to stay under the limit. The law does not name roofing, so we confirm with your building department first.³⁵

The Miami-Dade list above covers unincorporated areas; cities with their own building departments, such as Miami, apply their own. Broward’s rule comes from the county’s amendments to the code. When a permit is required, we pull it.

How a code-compliant repair works

1. Find the source. Water travels under a membrane, so the stain on your ceiling is often feet away from the hole. We trace it from the roof side.
2. Match the system. In Miami-Dade and Broward, repairs must use roofing components that have a product approval.¹ Outside the HVHZ, materials must carry Florida Product Approval.⁷
3. Rebuild the details. Flashing is rebuilt following the manufacturer’s installation instructions, and metal flashing that bitumen will stick to is primed first.² In the HVHZ, flashing and edge metal must meet RAS 111: at least 26-gauge galvanized or stainless steel, 16-ounce copper or 0.025-inch aluminum.¹
4. Keep the drainage. Where the roof is surrounded by parapets and no other overflow exists, the code calls for overflow scuppers 2 to 4 inches above the finished roof.⁸ If a repair shows the drains cannot keep up, we tell you.
5. Inspect if permitted. If the repair is permitted, it gets the inspections that go with the permit.

Repair or replace?

The 25 percent rule decides many of these. No more than 25 percent of a roof or roof section may be repaired, replaced or recovered in any 12-month period unless that whole roof or section is brought up to the current code.² If your flat roof was built, repaired or replaced under the 2007 Florida Building Code or later, the exception in F.S. 553.844(5) applies: only the repaired part has to meet today’s code, and cities cannot change that.⁹

Other signs point to replacement: wet insulation across large areas, leaks that move each time one is fixed, or a roof near the end of its expected life. National guides put TPO at about 7 to 25 years and modified bitumen at 20 to 30 years.¹⁰¹¹¹² We found no Florida-specific lifespan figures. If replacement makes more sense, see flat roof replacement, and for leaks you cannot place, leak detection and repair.

Insurance and claims

• Deadline. A new property insurance claim must be reported within 1 year of the date of loss. For a hurricane, the date of loss is the landfall date or the date NOAA verifies the event.¹³
• No deductible games. A contractor may not offer rebates, gifts or a waiver of your deductible for an inspection or a claim, and may not interpret your policy or adjust your claim without a public adjuster license.¹⁴
• No assignment of benefits. For policies issued on or after January 1, 2023, you cannot assign your claim benefits to a contractor.¹⁵
• Roof age. Repairs do not reset your roof’s age. Florida counts it from the last date 100 percent of the roof surface was built or replaced.¹⁶