The 25% Rule and the Patch-Job Problem in Florida Insurance
For the past several years, Florida insurance regulators have been rewriting the rules in ways that, in practice, lean hard toward the carriers instead of the people who actually pay the premiums. Lawyer fees, claim-reporting deadlines, reopening windows, mid-term policy changes — you could fill a book with the list.
“I’m not writing that book today. I’m zeroing in on one specific piece of legislation: SB 4-D, and how carriers are using it to justify repairs that don’t hold up.”
Why the Bill Exists
For decades carriers complained — loudly and with mixed success — that they were forced to replace an entire roof system when only a portion was damaged. Classic example: a two-level split house. Detached first-level garage, main roof over the second story. Ten squares of damage on the garage roof, and suddenly the carrier was on the hook for the whole 50-square main roof. The industry called it the “all-or-nothing” trigger.
SB 4-D was written to kill that trigger on code-compliant roofs. Fair enough on the surface. Truly isolated, independent roof planes that already meet modern wind codes shouldn’t automatically force a full commercial or residential replacement. The legislature carved out space for that reality.
What the Statute Actually Changes
SB 4-D amended F.S. § 553.844 by adding subsection (5). Stripped down: if an existing roofing system or roof section was built to at least the 2007 Florida Building Code, and 25% or more of that roofing system or roof section is being repaired, only the repaired, replaced, or recovered portion has to meet current code.
The statute is doing two distinct jobs with two distinct terms:
1. Roof Section
The specific area considered when calculating and applying the 25% threshold analysis.
2. Portion
The actual physical area being repaired, replaced, or recovered, which current code requirements attach to.
Those words aren’t interchangeable, and the split isn’t accidental — it’s the whole mechanism. The statute tells you which code edition governs the repaired square footage. It says nothing about whether a patch is a technically valid repair method in the first place. That gap is where the disputes start.
Where Carriers Overreach
The Carrier Strategy:
The carrier argument, boiled down, is: the 25% rule applies, so we only owe the damaged area. That conclusion goes further than the statute actually supports. SB 4-D answers a code-edition question, not a repair-method question — and desk adjusters routinely treat “you only owe current code on the repaired portion” as if it meant “a patch satisfies our obligation, full stop.”
It doesn’t. FBC § 706.1.1 still requires that the repaired portion comply with applicable code requirements, including requirements governing integration with existing construction. Learn more about navigating carrier overreach here.
Why the Patch Argument Falls Apart on the Roof
Roofing systems aren’t collections of independent pieces — they’re integrated assemblies designed to shed water as a whole. FBC § 706.1.1’s tie-in requirement is where the “just patch it” theory dies mechanically, regardless of what the 25% exception allows on paper:
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Hips and ridges do not automatically create separate roof sections under FBC § 202. Cut into a continuous slope and you’re cutting into a single, unified roof area — the presence of a hip or ridge doesn’t settle that question on its own. - ✕
You cannot glue new asphalt shingles, tiles, or metal panels onto old material and call it a day. Proper repairs require tying into adjoining areas, valleys, hips, or ridges to maintain a sealed system. - ✕
Manufacturer specifications still govern. Ripping up part of a roof compromises the interlocked surrounding materials and underlayment. If a clean, code-compliant tie-in can’t be achieved without damaging older, brittle adjoining stock, a localized patch may not be physically feasible or code compliant — regardless of which code edition SB 4-D says applies to it.
Carriers love to take the narrow architectural carve-out meant for detached canopies or truly independent split-level planes and stretch it across ordinary hip-and-gable residential roofs, using SB 4-D’s 25% exception as cover for a repair method the tie-in requirements won’t actually support.
The Real Stakes
A patchwork of weathered old shingles next to shiny new ones doesn’t necessarily restore weather resistance, system continuity, reasonable uniform appearance, or manufacturer-supported performance. SB 4-D never changed that. It changed which code edition the repaired portion has to meet — it didn’t authorize desk adjusters to use that as a blanket justification for undersized patches on continuous roof systems.
The building code sets the minimum standard for the materials used. The insurance policy sets the actual obligation to restore the property to its pre-loss condition.