What is the 25% rule for roofing?
The 25% rule is a provision of the Florida Building Code's existing building volume: when more than 25 percent of a roof, or of one roof section, is repaired, replaced or recovered in any 12-month period, the entire roof or section has to be redone to the current code.
Three details are often lost when the rule is repeated:
- It counts the work, not the damage. The trigger is how much roofing is being repaired or replaced, not how much was hit by a storm.
- It is measured per roof section. Florida's code divides a roof into sections at expansion joints, parapet walls, flashing other than valleys, changes in elevation or a change of roof type.
- It looks back 12 months. Several small repairs in one year are added together.
It was written for Florida's hurricane exposure, where a roof patched piece by piece can leave old, weaker sections next to new ones.
Does the 25% rule apply in Nebraska or Omaha?
No. Inside the City of Omaha, roof work follows the city's roof repair and replacement rules under the 2018 International Residential Code, and neither sets a percentage that turns a repair into a whole new roof.
What Omaha's rules do require:
- A permit for roof repairs and replacements over 2 squares (200 square feet)
- Code-compliant work where the roof is repaired or replaced: the underlayment, ice barrier, ventilation and drip edge the code calls for
- Removal down to the sheathing on a replacement, with no new layer laid over an old one
- A final inspection, with photos of the clean roof deck and the installed underlayment
Other Nebraska cities run their own building departments. Lincoln publishes its own re-roof policy, so check with the city where the property is. Rocket Roofing General Contractor pulls the permit on storm damage repairs in Omaha that need one.
Is the 25% rule still in force in Florida?
Even in Florida, the rule no longer works the way most articles describe it. Senate Bill 4-D, effective May 26, 2022, added section 553.844(5) to the Florida Statutes: when a roof or roof section was built, repaired or replaced under the 2007 Florida Building Code or later, and 25 percent or more of it is being repaired or replaced, only the part being worked on has to meet the current code.
The 2007 code took effect on March 1, 2009, so in Florida the old all-or-nothing rule now mostly reaches roofs installed before that date. The statute also bars local governments from amending the exception by ordinance.
So when the 25% rule is quoted as a reason for a full roof replacement in Nebraska, it is a rule from another state, one that state has since narrowed.
What does decide repair or full replacement on an Omaha roof?
With no percentage rule, the decision comes from the roof itself, the code for the work, and, when insurance is paying, your policy. The table lists what actually moves the decision, and who has the final word on each.
The repair or replace guide walks through the decision step by step, and the hail damage guide shows what storm damage looks like from the ground and on the roof.
| Factor | Why it matters | Who decides |
|---|---|---|
| Extent and kind of damage | Damage across several slopes, or to the shingles' mat, points to replacement; damage in one spot can often be repaired | The inspection, and the insurer's adjuster on a claim |
| Age and condition | On a roof near the end of its life, repairs keep coming and new shingles sit next to worn ones | You, with the inspection in hand |
| Matching shingles | A discontinued shingle or a faded color can leave a repair that does not match | The insurer on a claim, under the policy and Nebraska's matching rule |
| Code for the repaired area | A permitted repair has to meet the code: ice barrier, underlayment, ventilation, drip edge | The City of Omaha's permit and final inspection |
| Layers on the roof | A replacement in Omaha removes every layer down to the sheathing; nothing goes over an old roof | The city's roof rules |
| Your policy | Replacement cost or actual cash value, deductibles, and any cosmetic damage exclusion change what is paid | Your insurer, under the policy wording |
Does insurance have to replace the whole roof if new shingles will not match?
Nebraska's rule is about matching, not a percentage. Under the Nebraska Department of Insurance's claim settlement regulation, 210 NAC 60-010, when replacement items do not reasonably match the rest in quality, color or size, the insurer is to replace all items in the area so they conform to a reasonably uniform appearance. The rule covers interior and exterior losses, and the policyholder does not bear the cost beyond the deductible.
What that means in practice:
- The question is the match, not a share of the roof. A repair that blends in may be all a claim pays for; one that cannot match can widen the scope.
- "The area" is decided claim by claim. The regulation does not define it as a whole roof or one slope, so ask your adjuster in writing how far a repair has to extend to match.
- Your policy still governs. Coverage, deductibles and exclusions come from the policy, so read it and ask your insurer.
This is general information, not legal advice or a promise of coverage. The Nebraska roof insurance claims guide covers the whole claim from first call to final check.
What should I do if a roofer cites the 25% rule?
Ask which code, which section and which city it comes from. A contractor working in Omaha should be able to point to the city's roof rules or the 2018 International Residential Code for any requirement it names; one that cannot is repeating something it heard.
Then check the claim yourself:
- Read Omaha's roof repair and replacement rules, which take a few minutes
- On an insurance claim, ask for the adjuster's written scope and compare it with the contractor's
- Get a second inspection if the two disagree about whether the roof can be repaired
A full replacement is sometimes the right answer for an Omaha roof, but because of the damage, the roof's age or a match that cannot be made, never because of a percentage from Florida's code. The guide to telling when a roofer is lying covers other claims worth checking the same way.