Florida's 25% roof rule after SB 4-D: what it means for your repair

What the rule used to do

Florida's building code contained a provision that read, in effect: not more than 25 percent of the total roof area or roof section of an existing building may be repaired, replaced or recovered in any 12-month period, unless the entire roofing system or roof section is brought into compliance with current code.

In practice that turned a great many repairs into full replacements. Cross the 25% line and the job stopped being "fix the damaged part" and became "bring the whole roof to today's standard". The cost difference was often the difference between a claim that paid and a claim that didn't.

What SB 4-D changed

Senate Bill 4-D, passed in 2022, added an exception that now sits in s. 553.844(5), Florida Statutes — "Windstorm loss mitigation; requirements for roofs and opening protection". The text is worth reading closely:

…if an existing roofing system or roof section was built, repaired, or replaced in compliance with the requirements of the 2007 Florida Building Code, or any subsequent editions… and 25 percent or more of such roofing system or roof section is being repaired, replaced, or recovered, only the repaired, replaced, or recovered portion is required to be constructed in accordance with the Florida Building Code.

So: if your roof already meets the 2007 code or later, a large repair no longer drags the whole roof with it. Only the part being worked on has to meet current code.

The question that decides it

Not "how bad is the damage". The question is when was this roof last done, and to which code. That's a permit records question, and it's one of the first things any competent roofer should check before quoting.

It also means two houses on the same street with identical damage can get legitimately different quotes — one a repair, one a replacement — purely because of what's in the permit history. If you get two quotes that differ that dramatically, that's the first thing to ask about.

Where it still forces a replacement

The exception doesn't cover everything. A roof that predates the 2007 code doesn't get it. Structural damage to decking or supports is a different problem. And the code contemplates matching material being available — if the profile is discontinued and nothing comparable exists, the practical answer can still be a replacement.

The caveat nobody mentions

The building code permitting a repair does not mean your insurance carrier will accept one. Carriers set their own underwriting requirements, and some will require a full replacement to keep writing the policy regardless of what the code allows.

If you're repairing rather than replacing and the roof is toward the end of its life, get your carrier's position in writing before the work starts. It's a short email and it can save a very expensive surprise at renewal.

How repairs work