Most roofing contractors doing insurance work believe they’re capturing what they’re owed. The adjuster approved the claim, the check arrived, the job got done. But approval doesn’t mean completeness — and in the supplemental estimating work TotalScope processes across Texas, Oklahoma, Colorado, Nebraska, Kansas, and Wyoming, the same gaps show up on job after job. What roofers leave on the table isn’t random. It’s predictable, it’s patterned, and on most insurance jobs, it adds up faster than most contractors realize.
The Gap Between Approved and Complete
When an adjuster produces an initial estimate, they’re working quickly — often inspecting multiple properties in a single day, pulling from aerial measurement data, and applying standard database pricing that doesn’t always reflect real-world costs in a given market. The result is an estimate that’s approved but not complete.
That gap between what’s approved on the first estimate and what the job actually requires is where supplement recovery happens. On a typical residential replacement, that gap runs anywhere from a few hundred dollars on a simple single-story job to several thousand on steep, multi-story, or code-upgrade-heavy work. Across a full storm season’s worth of jobs, those individual gaps compound into a significant portion of a contractor’s total potential revenue.
Understanding where those gaps consistently appear is the first step toward closing them. The supplemental estimating process exists precisely because these omissions are the rule, not the exception.
The Line Items Most Commonly Missed
Based on the supplements TotalScope has processed across its service markets, a clear pattern emerges. These are the line items that appear most frequently in successful supplements — meaning they were missing from the original adjuster scope and recovered through the supplementing process.
Overhead and Profit (O&P)
O&P is the single most commonly under-applied line item in roofing insurance claims. Carriers frequently omit it from initial estimates, and many contractors either don’t notice or don’t push back. On a $15,000 to $20,000 replacement, O&P typically represents $1,500 to $3,000 in legitimate recoverable revenue. It’s appropriate on virtually all general contractor-level roofing jobs and is a recognized component of Xactimate-based estimates — but it requires documentation and a clear case for why the general contractor role applies. When it’s missing and unchallenged, that money simply doesn’t get paid.
Code Upgrade Line Items
Building codes have evolved significantly over the past decade, and most jurisdictions now require items that weren’t standard practice when older homes were built. Drip edge, ice and water shield in specified climate zones, updated ridge ventilation, and synthetic underlayment requirements all show up regularly as code-mandated upgrades on storm damage replacements — and all of them are regularly absent from initial adjuster scopes. These aren’t negotiable line items. They’re legally required components of a code-compliant installation, and they belong in every supplement where applicable.
Starter Course and Hip/Ridge Quantities
Adjuster measurements frequently miscalculate linear footage on starter course and hip and ridge material. Aerial measurement tools have inherent limitations on complex roof geometries — hip-heavy designs, multiple planes, irregular pitches — and those limitations tend to undercount rather than overcount. The square footage might be close, but the linear items are where the math breaks down. On a job with significant hip and ridge footage, this alone can represent hundreds of dollars in unrecovered material cost.
Detach and Reset Items
Satellite dishes, gutters, HVAC equipment on the roof, skylights, solar components, and pipe boots are the items adjusters most consistently skip in initial scopes. They’re visible on the roof. They require work to remove and reinstall. And they’re billable line items that belong in the estimate. On a job with two or three of these items, the missed detach-and-reset charges can add $400 to $800 to a supplement. Across a high-volume storm season, that pattern repeated on dozens of jobs represents real money that was earned and not collected.
Steep Slope and Story Height Adjustments
Xactimate includes built-in pricing adjustments for steep slope work and multi-story access — both of which add labor cost and time to a job. These adjustments are frequently absent from initial estimates, particularly on properties where the adjuster didn’t access the roof directly. A steep slope adjustment on a 10/12 or greater pitch can add 20 to 30 percent to the labor line. A two-story height adjustment adds another measurable amount. When both apply and neither is in the scope, the contractor absorbs the difference.
Permit Fees and Disposal Costs
Permit fees are required by law in most jurisdictions. Disposal costs are an unavoidable part of a tear-off replacement. Both are routinely missing from adjuster estimates — not because they’re contested items, but because they’re overlooked in the rush of high-volume claim processing. These are among the easiest supplement line items to recover because they’re straightforwardly verifiable: a permit costs what the local jurisdiction charges, and disposal costs what the dumpster company invoices. The documentation requirement is minimal and the approval rate on well-submitted permits and disposal line items is high.
What These Gaps Look Like in Aggregate
On a straightforward single-story residential replacement with no complexity, a complete supplement might recover $800 to $1,500 in missed items. On a steep, multi-story job with code upgrades, detach-and-reset items, and O&P in play, that number can reach $4,000 to $6,000 or more. The average across a diverse job mix tends to land somewhere in the middle — but the contractors who supplement consistently report that their effective per-job revenue is meaningfully higher than what adjuster estimates alone would have paid.
That difference doesn’t require running more jobs. It doesn’t require hiring more crews. It comes from the work you’re already doing, on properties you’ve already contracted, through a process that runs in parallel with your production schedule. That’s what makes professional supplement estimating one of the highest-leverage operational improvements available to an insurance restoration contractor.
Why These Gaps Persist
If the missed items are this predictable, why do they keep appearing on adjuster scopes? A few reasons. Adjusters are working at volume, especially after major storm events — major hail and wind events generate thousands of claims simultaneously, and individual estimates don’t always get the review time they warrant. Adjuster training focuses on the most common line items, and edge cases — complex geometries, code upgrade triggers, detach-and-reset items — get missed more often as a result. And carriers have no institutional incentive to catch their own omissions.
The burden of identifying and documenting missing items falls on the contractor. Those who have a reliable process for doing that consistently are the ones capturing the full value of every job. Those who don’t are funding the gap themselves. The most costly mistakes in roofing insurance claims almost always trace back to this — not bad jobs, just incomplete scopes that nobody challenged.
How to Close the Gap
The most reliable way to close the supplement gap consistently is to treat every adjuster estimate as a first draft rather than a final answer. That means reviewing every scope against the actual job conditions, documenting the discrepancies, and submitting a well-built supplement that speaks the carrier’s language.
For contractors with the Xactimate expertise and bandwidth to do that in-house, the process is manageable at low volume. As job count scales — particularly during storm season — the supplement workload scales with it, and in-house capacity becomes the bottleneck. That’s the point where outsourcing to a professional estimating service typically becomes the higher-margin decision.
TotalScope handles the full supplement process for roofing contractors across Texas, Oklahoma, Colorado, Nebraska, Kansas, and Wyoming — reviewing scopes, identifying gaps, building Xactimate-based supplements, and managing carrier communication through approval. If you want to know what the supplement gap looks like on your specific job mix, reach out and start the conversation. The first review tells you a lot.
Frequently Asked Questions
What is a roofing supplement?
A roofing supplement is a formal request to an insurance carrier to revise an approved claim estimate and increase the payout to cover line items that were missing or underpriced in the original adjuster scope. Supplements are a normal part of the insurance restoration process and are submitted after the initial estimate is received.
How much do contractors typically recover through supplements?
Recovery varies by job complexity, market, and carrier. On straightforward single-story jobs, supplement recovery typically ranges from $800 to $1,500. On complex jobs with steep slopes, code upgrades, multi-story access, and detach-and-reset items, recovery can reach $4,000 to $6,000 or more. The consistent pattern across markets is that adjuster estimates routinely miss between 10 and 25 percent of a job’s true replacement cost.
Is supplementing adversarial with the insurance carrier?
No. Supplementing is a standard, expected part of the claims process. Insurance carriers anticipate supplements on complex jobs, and well-documented supplements built in Xactimate are reviewed and approved regularly. The goal is not to dispute the adjuster’s work — it’s to complete the scope accurately.
Which line items are most commonly missed by adjusters?
The most frequently missed line items are overhead and profit (O&P), code upgrade requirements (drip edge, ice and water shield, updated ventilation), starter course and hip/ridge quantities, detach-and-reset items (gutters, satellite dishes, HVAC equipment), steep slope and story height adjustments, and permit and disposal fees.
Can I handle roofing supplements in-house?
Yes, if you have a staff member with strong Xactimate fluency and the bandwidth to keep up during high-volume periods. The challenge most contractors face is that supplement workload spikes during storm season at exactly the point when in-house capacity is most stretched. Professional supplement estimating services exist to handle that overflow — or to take over the process entirely so your team stays focused on production.
How do I know if I’m leaving money on the table?
The clearest signal is comparing your approved adjuster estimates against the actual line items your jobs require. If you’re consistently absorbing costs that aren’t in the approved scope — code upgrades, detach-and-reset items, steep slope adjustments — you’re leaving money behind. A professional estimating review of a sample of recent jobs can quantify that gap quickly.