Roof Insurance Supplements: Why First Checks Run Short

The first insurance check shows up, and it is thousands less than any real bid to build your roof. Here is the direct answer: that first scope is a first draft, and a supplement is the standard, documented process for correcting it. Your contractor proves what the scope missed with photos, measurements, and code citations, the carrier reviews the evidence, and approved items get added to the claim and paid by the carrier. It is paperwork, not a scam, and on most claims I touch it moves real money.

I write supplements for a living in Charlotte, and a typical first scope on a hail claim comes in $1,500 to $4,000 light, more when code items are involved. Not because adjusters are crooked. Because of how first scopes get built: limited time on the roof, aerial measurements, and software defaults. Let me show you how the correction process works, what usually gets missed, and how to tell an honest supplement from an abusive one, because both exist.

What is a supplement, actually?

Insurance scopes are written in estimating software, almost always Xactimate, as line items: so many squares of shingles, so many feet of ridge, tear-off, underlayment, vents. A supplement is a formal request to add or correct line items, backed by evidence. A real one attaches proof: photos of the drip edge that exists on your house but not in the scope, the measured pitch that triggers a steep charge, the code section that requires a product the scope left out.

The carrier's desk adjuster reviews it, approves or denies each item, and reissues the paperwork with the new numbers. Your policy language still controls what is owed; a supplement just makes the scope match the policy and the actual house. No lawsuit, no public adjuster, no drama. It is the same truing-up that happens on commercial jobs every day of the week.

Why does the first scope come up short?

Because of how it gets produced. A field adjuster after a big storm might scope four to eight houses a day. Measurements often come from aerial reports. The software fills in defaults: 10 percent waste, no steep charge unless someone flags the pitch, no story charge unless someone keys it in. Anything the adjuster did not see or enter does not exist on paper.

None of that is corruption; it is volume. But the errors run in one direction, short, because a scope only contains what got noticed. That is also why the strongest claims start with the contractor on the roof at the adjuster meeting, pointing at things. What that meeting should look like is covered in what adjusters look for on a hail inspection.

The items that get missed most often

After hundreds of these files, the same lines run short over and over:

• Drip edge. Required by code on new roofs in most jurisdictions, including under the North Carolina residential code, and routinely absent from first scopes. Typically $300 to $600 on a normal house.
• Steep and story charges. Labor premiums on a 7/12 or steeper pitch, and handling charges on two-story homes, are legitimate line items. On a big, steep roof they can swing $800 to $3,000.
• Ice and water shield where code requires it. Valleys in many jurisdictions, eaves in cold climates, and around penetrations per manufacturer specs. When your policy includes code coverage, the claim owes what code requires.
• Waste percentage. Software defaults to 10 percent. A cut-up roof with hips, valleys, and dormers really runs 15 percent or more. On a 30 square roof, that difference is a stack of shingles somebody has to pay for, and it should not be you.
• Haul-off and disposal. A tear-off produces 2 to 4 tons of debris. The dumpster and dump fees run $400 to $600 and are sometimes not in the scope at all.
• The small stuff that adds up. Starter strip, real ridge cap instead of cut-up 3-tab, pipe boots, flashing replacement, and the permit fee.

How does the supplement process work?

1. Documentation. Your contractor photographs and measures everything during the pre-build inspection, and again at tear-off, when hidden conditions become visible. Rotten decking is the most common mid-job supplement there is, at roughly $70 to $120 per sheet replaced.
2. Submission. The contractor sends an itemized supplement in the same line-item format the scope uses, with photos, measurements, and code citations attached.
3. Review. A desk adjuster evaluates it. Clean, well-documented items often clear in days; others take a reinspection. Plan on 1 to 6 weeks overall, longer in a heavy storm season.
4. Revised paperwork and payment. Approved items raise the claim total, and the carrier issues the difference per the policy, with the depreciation math updated to match.

Notice whose job the arguing is: your contractor's. If a company tells you that chasing the missing items is your fight, you hired the wrong company. Our guide to reading a roofing estimate shows what a complete scope looks like line by line, which makes the gaps easy to spot.

ACV, RCV, and depreciation in 60 seconds

A quick recap so the checks make sense. RCV is the full replacement cost the carrier acknowledges. Depreciation is the age-based holdback. ACV is RCV minus depreciation, and the first check is usually ACV minus your deductible. Supplements raise the RCV, and the withheld depreciation gets released after the work is completed and invoiced. So a $16,000 RCV claim with a $2,000 deductible and $5,000 depreciation pays $9,000 up front and $5,000 at completion, plus whatever the supplement added. The full walkthrough lives in how roof insurance claims actually work.

What is your job as the homeowner?

Smaller than you think, but the small part matters:

• Hire a contractor who documents. Ask to see a sample supplement package before you sign anything.
• Forward every carrier document to your contractor the day it arrives, and return signatures promptly. Supplements stall on slow paperwork more than on disputes.
• Do not spend the first check. It is a progress payment, not the budget.
• Pay your deductible. It is your real cost, by policy design and by law.
• Keep the final approved scope and every supplement approval in one folder. Depreciation has deadlines, and that folder is your proof.

Red flags: when a supplement is being abused

Supplements have a bad reputation in some corners because some outfits abuse them, and carriers tighten up for everyone after each one. Watch for:

• A contractor who promises a final number before reading your scope. Nobody honest knows what a supplement will yield in advance.
• Line items for work that will not actually be performed. That is not aggressive billing; it is fraud on a claim that carries your name.
• Quantities that do not match your house, like 40 squares of shingles scoped onto a 28 square roof.
• A company that refuses to show you what it submitted to your own carrier.

What to do next

Pull out your claim paperwork and read the scope like a bid. Is drip edge on it? Is the pitch charged correctly? Does the waste percentage match a roof with your number of valleys? Is haul-off in there? Sanity-check the total against the replacement cost estimator. If lines are missing, do not fight the carrier yourself: hire a contractor who documents, and let the paperwork do the work. And if any part of anyone's pitch involves your deductible disappearing, keep your name off it and find another roofer.