Pro roofing Florida: The Florida Guide
By Marcy Doleman, Commercial roofing estimator. Reviewed by Hal Winstead, Editor, licensed roofing contractor. That afternoon in Sarasota, the sky was doing that thing where it looks blue over the Gulf but green to the east, and I was up on a school roof pulling back a loose ply sheet on a twenty-year-old modified bitumen job. The deck underneath was wet. Not damp — wet, like someone had left a garden hose running under the membrane. The maintenance director stood below, arms crossed, asking me if I could "just patch it up" before the 3:15 bell.
You can guess how that ended.
I'm Marcy Doleman. I estimate flat and low-slope commercial work across Florida — TPO, modified bitumen, coatings — for warehouses, retail plazas, schools, the occasional church. What follows is the stuff I wish building owners knew before they called my office, the stuff that saves you money and heartache when you're searching for roofing companies in Florida and trying to seperate the certified pros from the guys with a truck and a prayer.
Pro roofing florida starts with a licence, not a logo
Florida roofing contractors are licensed by the Department of Business and Professional Regulation — that's the DBPR. You'll see two types, and the difference matters.
A certified roofing contractor holds a licence begining with the prefix CCC. That means they passed a statewide exam and may work anywhere in Florida. A registered roofing contractor holds a licence beginning with RC, and they're only allowed to work in the local jurisdiction that licensed them, usually the county or city where they applied.
Here's how I handle it: before I even measure a roof, I ask for the licence number. Then I look it up on the DBPR roll while we're still on the phone. It takes ninety seconds. The number is active or it isn't, and the name on the licence must match the company or the qualifying agent running the work. I of been wrong about this before, so I don't guess — I check. That little bit of homework filters out more hacks than anything else I do.
Don't hire off a business card with a generic "Florida Roofing" name and no licence to match. Verify the number is active, check the qualifier actually works for the company, and ask who is pulling the permit.
Every permit is a chance to find trouble — let it
A roof replacement in Florida requires a permit from the local building department, and it requires an inspection. That is not optional, and it is not a suggestion. A contractor who tells you they can do it without a permit, or who quotes you a "better price" if you skip that step, is a contractor to walk away from.
Why the hard line? An unpermitted roof can complicate both an insurance claim and a future sale. When the adjuster shows up after a hurricane and asks for the final inspection sign-off, you won't have one. When the buyer's title company runs the permit history, it won't be there. That turns into a re-roof on your dime, plus penalties, at the worst possible time.
The permit process isn't just bureaucracy. The inspector checks things you'd never think to check — roof deck fastening, flashing details, edge metal. One time I saw an inspector climb up a ladder and immediately pull out his phone to photograph a roof-to-wall connection that was holding water against the parapet. That's the kind of thing that rots a building from the inside out and you never see it from the parking lot.
The rule that changed everything — the 25% thing
For years, Florida had what everyone called the '25% rule.' It came out of the Florida Building Code: if you repaired or replaced more than 25% of a roof in any 12-month period, you had to bring the whole roof up to current code. So that leaky section over the break room that's maybe 30% of the total deck? You weren't just fixing the leak. You were triggering a full replacement, to today's code, with all the costs that come with it.
That changed on 26 May 2022, when SB 4-D took effect.
The new rule: If your roof was built, repaired, or replaced under the 2007 Florida Building Code or any later edition, then only the portion you're working on must meet current code. A full roof replacement is no longer automatically triggered just because you crossed that 25% threshold. Let me be clear about the catch — the 2007 code took effect on 1 March 2009. If your roof was completed before that date, it generally does not qualify for this relief. So that old built-up roof from 2003? The old rule can still bite you.
I get asked about this constantly, because it changes the math on a repair. If you're at 20% and the code won't force a full replacement, you patch it and budget for the big one in a few years. If you're at 30%, you're probably looking at a full re-roof anyway, so grab the TPO quote.
Wind mitigation inspections — the cheapest money you'll ever spend
Here's a thing that surprises people: you can pay a licensed inspector a relatively small fee to document how your roof resists wind, and that paperwork may cut your insurance premium for years.
A wind mitigation inspection documents the roof covering, the roof deck attachment, the roof-to-wall connection, the roof geometry, whether there's secondary water resistance, and the opening protection on the structure. That's alot of detail, but it all feeds into one standard form: OIR-B1-1802.
Florida insurers must offer premium discounts for qualifying features, and Citizens Property Insurance Corporation has to as well, I beleive, for eligible policies. The annual discount you open up can easily exceed what the inspection cost you in the first year, so it's about as close to free money as a roof ever gives back. Call it a "discount," but read your own declarations page and talk to your agent you're not relying on what a roofer tells you your policy says. Coverage varies by policy, and nobody likes surprises after a storm.
The inspection works best when done before you commit to a re-roof, because the premium break might justify spending a bit more on, say, a stronger deck attachment or a hip roof versus flat. But even an existing roof can score well if it has the right features documented. Get the inspection done, keep the form somewhere safe, and hand it to your agent.
What I would actually do: Before I ever signed a contract, I'd ask the contractor for their roofing system's facts — membrane type, fastener spacing, insulation thickness, and how they plan to flash the penetrations. Then I'd take those specs to my insurance agent and ask, "What does this do to my wind mitigation score?" Let the policy guide the purchase.
The cost question nobody wants to ask first
The first thing out of most clients' mouths is "what's it going to cost per square?" A square is 100 square feet of roof, and commercial work is priced per square.
Here's the truth: the price depends on pitch, access, and what's under the existing roof. A one-story warehouse with a low slope and a clear parking lot? That's the easy end. A three-story school with a parapet wall, no crane access, and a deck that has wet insulation buried under two layers of old modified bitumen? Completely different animal.
I quote after I walk the roof, not before. If a contractor gives you a firm number over the phone without seeing the roof, they're either guessing high to cover themselves or guessing low to win the bid. The number changes dramatically if you have wet insulation or if the deck needs plywood replaced. I have seen "just a reroof" turn into a full deck replacement because the wood underneath had rotted for years and nobody had looked.
A foolproof way to spot a pro: they ask you about access, about what's underneath the membrane, about whether there are skylights or HVAC curbs or a kitchen exhaust that coats everything in grease. The guys who don't ask those questions are the ones who come back with change orders later.
What I would actually do: Take any low bid and double-check what it includes. Does it cover removal of the old roof, or are they laying new over old? Does it include sheet metal flashing at the perimeter and all penetrations? Does it list the insulation thickness and fastener schedule? The cheapest number on the bid sheet is often the most expensive roof you'll ever buy.
One other thing that happens at the end
I mentioned I was on a school roof in Sarasota. That one ended with a full replacement — the deck was shot and the moisture readings were off the charts. But it also ended in August, which in Florida means one thing: afternoon thunderstorms every single day at 4 p.m. The crew got real good at tarping up fast.
That's the digression I'll allow myself, because it's got a point. Timing matters. In Florida, the calendar is part of the estimate. A roof done in April has a much easier time getting through final inspection than one done in late October, when the crew is racing the end of hurricane season. It's a real thing — nobody wants a half-finished membrane when the cone of uncertainty points at the coast.
Questions I get asked
How long will my commercial roof last?
Call it fifteen to twenty years for a quality TPO or modified bitumen roof in Florida, but the sun is brutal and the heat is relentless. A dark membrane in South Florida will age faster than a light one in the Panhandle. The bigger factor is maintenance: a well-maintained roof outlives a neglected one by years.
Can you tell me what's wrong with my roof from the ground?
No, and any contractor who says yes is guessing. I need to be on the deck, looking at seams and penetrations and measuring moisture. The ground tells you very little about a flat roof, because the problems are under the membrane where you can't see them.
Do I have to replace my whole roof if it's leaking?
Not always, but the code question from SB 4-D (2022) matters here. If your roof is newer than 2009 and the leak is an isolated section, a repair is often fine. If it's older, the repair may trigger a full replacement under the old 25% rule.
What's the difference between TPO and modified bitumen?
TPO is a single-ply membrane that's white, reflective, and heat-welded at the seams. Modified bitumen is torch-down or peel-and-stick, darker, and has multiple layers. I choose based on the building's use, the roof geometry, and budget. Your roofer should explain why they picked one over the other, not just push a favorite.
Do you give free estimates?
I never say "free." I say "no charge for the first visit." Same words, different meaning. I'm spending time on your roof to give you an opinion, and if you don't hire me, that time isn't wasted — it's marketing. But I'm not giving you a price until I've actually seen the roof, because anything else is fiction.
How do I know a roofing company is legitimate?
The DBPR licence prefix is your first filter — CCC for certified, RC for registered — and you can look the licence up on the state roll in a couple of minutes. Ask for the licence number before you ask for a price, and check it while they're standing there. A legitimate company will not mind. A company that dodges the question is telling you everything you need to know.
The permitting and inspection process is your second filter. A contractor who wants to skip the permit is a contractor who's already decided they don't want anyone looking at their work. That's not a risk you should take with the thing that keeps the rain off your inventory or your fourth-graders, whichever happens to be underneath.