An adjuster's scope is the Xactimate estimate the carrier built — a stack of line items with quantities, plus the money math: RCV (replacement cost) minus depreciation equals ACV (the first check), minus your deductible. Read it like a checklist against the roof: confirm the square count matches the measurement, then make sure every component is actually on it — starter, ridge cap, drip edge, ice & water, flashing, pipe boots, steep and high-roof charges, and any code upgrades. The items most often missing are the accessories and labor add-ons, not the field shingles. When something real is left off, you don't argue — you submit a supplement: the missing line item plus the photo, code, or manufacturer spec that makes it non-negotiable. The carrier still makes the final call.
A lot of roofs get underpaid not because the claim was denied, but because the scope was thin. The adjuster wrote the shingles and missed half the accessories, or priced a 3-tab on an architectural roof, or left off the steep charge — and nobody caught it. Reading the scope well is its own skill, and it's where a documented file turns into a fully paid job.
Here's how to read an adjuster's scope line by line, the items most often left off a roof claim, and how to write a supplement that actually gets approved.
What the scope actually is
When the carrier's adjuster finishes, they produce an estimate — almost always an Xactimate document. It's not a verdict; it's a worksheet. It lists every line item they're approving, the quantity of each, a unit price from the regional price list, and then the summary math that turns all that into a check. Your job reading it is twofold: confirm the quantities are right, and confirm nothing real is missing.
To do either, you need to read the money section, because that's where a thin scope hides.
The money math, in plain terms
| Term | What it means |
|---|---|
| RCV — Replacement Cost Value | What it costs to replace the roof new, today. The sum of all the line items. |
| Depreciation | Value lost to age and wear, subtracted from RCV. An older roof depreciates more. |
| ACV — Actual Cash Value | RCV minus depreciation. This is the first payment the carrier issues. |
| Recoverable depreciation | On an RCV policy, the held-back depreciation that's released once the work is completed and invoiced. |
| Deductible | The policyholder's share, subtracted from the claim. |
| O&P — Overhead & Profit | General-contractor markup (commonly ~10% + 10%), warranted when the job is complex enough to need a GC. |
So the flow is: RCV − depreciation = ACV, then ACV − deductible = the first check. On a replacement-cost policy, the recoverable depreciation comes back to the homeowner after the roof is built and the final invoice is submitted — which means a thin RCV doesn't just shrink the first check, it shrinks the recoverable amount too. The Insurance Information Institute has a plain-English primer on deductibles and replacement cost vs. actual cash value if a homeowner wants the background.
How to read it line by line
Lay the scope next to your own measurement and documentation and walk it:
- Check the squares. Roofing is priced per square (100 sq ft). Does the quantity match your measurement, with a realistic waste factor for hips and valleys? An undercounted square total quietly underpays everything.
- Check the shingle class. Architectural roof priced as 3-tab? That's a correction, not an argument.
- Check the layers. A two-layer tear-off is more labor and disposal. If the roof had two layers and the scope wrote one, it's short.
- Run the component checklist. Starter course, ridge cap, drip edge, ice & water shield, underlayment, step and counter flashing, pipe jacks, valley metal. Each is a separate line item — see our Xactimate codes guide for where each one lives.
- Check the labor add-ons. Steep charge (7/12 and up), high/two-story charge, and minimum charges. Easy to omit, real money.
- Check for code upgrades. Drip edge, ice & water, deck re-nailing, or a second fastener row that current code requires but the old roof lacked — these may be covered under the policy's Ordinance & Law limit.
- Check the summary. Is depreciation reasonable for the roof's age? Is O&P present if the job warrants a GC? Is the deductible applied correctly?
The line items most often missing
Across thin scopes, the same items go missing — and they're almost never the field shingles:
- Starter course and ridge cap — you can't build the roof without them, yet they're the most-dropped pair.
- Drip edge — required by current code (IRC R905.2.8.5) on a full replacement.
- Ice & water shield — required at eaves in cold climates, smart at valleys everywhere.
- Steep and high-roof charges — labor add-ons that vanish from quick scopes.
- Flashing, pipe boots, and valley metal — new ones, not reused.
- Detach & reset — satellite, solar, lightning protection.
- Decking — rotten sheathing found at tear-off, written as a verified-on-tear-off allowance.
- O&P, permit, haul-off, and sales tax — the back-of-the-estimate items that still add up.
A note on Overhead & Profit
O&P is general-contractor markup — typically about 10% overhead plus 10% profit — and it's warranted when a job is complex enough that a homeowner would reasonably hire a GC to coordinate it. The common rule of thumb is three or more trades involved (roofing, gutters, and paint, say), though it ultimately turns on complexity, not a hard count. If the job qualifies and O&P isn't on the summary, that's a legitimate supplement line — and on a full roof replacement it's not small.
How to write a supplement that gets approved
A supplement is not an argument; it's a documented request to add or correct line items the original scope missed. The ones that get approved share a pattern: every requested item is paired with the proof that makes it non-negotiable.
- Lead with evidence, not opinion. "Add drip edge — IRC R905.2.8.5 requires it on replacement" beats "the scope should include drip edge." Attach the photo, the code, the manufacturer install instruction, or the measurement.
- Itemize. One line item per missing component, each with its quantity and its justification. Don't send a paragraph; send a corrected scope.
- Tie it to the peril. Make sure the damage call behind the scope is solid — which is where naming wind versus hail correctly and your hail documentation do the heavy lifting.
- Stay professional. Adjusters approve clean, well-documented supplements all day. The tone that works is "here's what the scope is missing and here's the proof," not "you got it wrong."
And be straight with the homeowner about the ceiling: a supplement is far more likely to be approved when it's documented, but the carrier still makes the final determination. Nobody can promise an outcome — be wary of anyone who does.
The honest part
Reading a scope well isn't about gaming the carrier. The adjuster is often working fast across a stack of roofs, and a thin scope is usually an oversight, not a fight. Your documentation exists to make the real, code-required, manufacturer-required scope obvious — so the roof gets built right and paid for fully. That framing matters: it keeps you on the right side of the adjuster relationship, and it's the only version of this that's sustainable.
Where AI helps — honestly
Comparing what's on the roof to what's on the scope is a checklist task, and checklists are where consistency beats memory. Roof Diagnose turns your photos into an itemized findings list with the likely Xactimate code and the building code behind each one — so when you read the adjuster's scope, you're reading it against a complete component list instead of from memory, and the gaps jump out.
The honest caveat is the same as always: the tool documents and itemizes; it doesn't price the claim or decide it. Confirm quantities and selectors in your current Xactimate price list, verify the findings on-site, and let the adjuster and carrier own the determination. AI-assisted, verified on-site — that's the posture that keeps the file clean and the supplement credible.