Insurance Engineer Said "No Damage"? How Roofers Rebut the Report

The homeowner had an adjuster out. Obvious hail bruising across the south and west slopes, splatter on the gutters, and fresh dents on the soft metal accessories. The adjuster took photos, nodded, and said it looked like a covered loss. Two weeks later a letter arrives. The carrier has retained an engineering firm. The engineer's report concludes that the damage is "mechanical" or "foot traffic" or "consistent with manufacturer defect" rather than hail. Claim denied.

This is the engineer report denial pattern. It is one of the most common reasons legitimate roof claims get shut down, and it is one of the most beatable. Carriers know engineers carry authority. Homeowners often assume an engineer's letter is the last word. Roofing contractors who know how these reports are built, who writes them, and how to rebut them pull these claims back from denial every week.

This guide walks through which firms the carriers typically retain, what those reports actually say, the red flags inside them, how to document evidence that contradicts the report, when to bring in your own independent engineer, what your state's bad faith statute looks like, and the escalation path that forces the carrier to reconsider.

None of this is legal advice. It is the practical playbook contractors and policyholder-side advocates use to push back when a forensic engineer shows up and declares nothing happened.

Why Carriers Hire Engineers in the First Place

Engineers are not retained on routine claims. They are retained on claims where the payout is meaningful, the evidence is ambiguous, or the carrier wants an independent opinion to support a denial. That last category is where most disputed reports come from.

The economics are straightforward. A forensic engineer visit costs the carrier 1,200 to 3,500 dollars. The carrier deploys them on claims where the potential payout is 15,000 dollars or more. If the report supports denial, the carrier saves far more than the engineer fee. That economic pressure shapes how some reports get written.

None of this makes the engineer dishonest. Most forensic engineers are licensed, experienced professionals. But the engineer is retained by the carrier, paid by the carrier, and works in a market where the carrier is the repeat customer. That structural reality shapes the range of conclusions you tend to see in their reports.

The Firms: HAAG, Rimkus, Donan, Nelson Forensics

If the report lands on your desk, it will almost certainly carry the letterhead of one of a handful of firms. Knowing who they are and how they approach claims helps you read the report with the right context.

HAAG Engineering

HAAG is the best-known forensic firm in roofing. Their HAAG Certified Inspector program trains inspectors (both engineers and non-engineers) on hail, wind, and mechanical damage identification. HAAG reports are typically detailed, well-formatted, and cite HAAG's own published guidance on damage indicators. Read carefully: a HAAG report is only as good as the inspector's underlying observations, and the conclusions are sometimes stretched beyond what the photos actually support.

Rimkus Consulting Group

Rimkus is a large national forensic firm that handles engineering, origin and cause, and construction disputes. Their roofing reports tend to emphasize storm data (hail size, wind speed) pulled from NOAA, radar, and third-party meteorology sources. If the Rimkus report relies on storm data that does not match the actual loss conditions, that is an opening for rebuttal.

Donan Engineering

Donan is another widely used firm, especially in the Southeast and Midwest. Donan reports often focus on patterns of damage and material degradation. Common denial conclusions include "mechanical damage," "foot traffic," "manufacturing defect," or "normal wear and tear."

Nelson Forensics

Nelson Forensics operates across multiple regions and produces reports that often emphasize the absence of specific damage indicators rather than the presence of alternative causation. Pay attention to whether Nelson's report addresses the specific indicators your own documentation shows.

Other Firms

Smaller regional firms, independent PE stamps, and adjuster-firm affiliates also show up. The same principles apply regardless of the firm name on the cover page.

Anatomy of an Engineer Report (and the Red Flags)

A typical carrier-retained engineer report runs 15 to 40 pages and follows a predictable structure. Understanding the structure helps you find the weak points quickly.

Standard Sections

1. Cover page and executive summary
2. Scope of assignment (often dictated by the carrier's letter of engagement)
3. Property description and site observations
4. Weather data summary
5. Photographs with captions
6. Analysis and discussion
7. Conclusions
8. Appendices (credentials, references, data sources)

Red Flags to Look For

These are the most common soft spots in carrier-retained reports.

• Limited inspection scope. Did the engineer walk the full roof, or only the slopes the adjuster flagged? Did they inspect soft metals, window screens, gutters, HVAC fins, and painted surfaces for collateral hail evidence?
• Inadequate photo coverage. A report with 10 photos on a 35-square roof is typically insufficient. The absence of photos documenting common indicators (fresh mat exposure, spatter patterns, directional wind damage) is not the same as a finding that none exist.
• Weather data mismatch. Check the storm date cited and the hail size used. NOAA and local mesonet data often show larger hail at the specific property location than the report acknowledges.
• Overreliance on age of the roof. Attributing damage to "weathering" or "age" without addressing the specific impact marks is a common shortcut.
• Circular reasoning. Reports that conclude "because there are no HAAG-identified hail indicators, this is not hail damage" without examining why standard indicators might be absent or altered.
• Foot traffic attribution. Attributing damage to foot traffic when the impact pattern is random across the roof, not concentrated in access areas, is typically a stretch.
• Manufacturer defect conclusion. If the engineer concludes manufacturer defect but fails to provide test cuts, product ID, or manufacturer correspondence, the conclusion is thin.
• Missing PE stamp where required. In some states, forensic opinions about structural damage require a licensed professional engineer's stamp. An unstamped report can be challenged on that basis alone.

Read the report from the inside out. Look at the photographs and the raw observations first. Then read the conclusions. You will often find that the conclusions go beyond what the photographs actually support.

Photo and Physical Evidence That Contradicts the Report

A denial based on an engineer report stands or falls on the evidence. The single most effective rebuttal tool is better documentation of the damage than the engineer collected.

Required Photo Inventory

• All four elevations of the house with roof visible
• Every slope photographed from multiple angles
• Close-up impact photos on every slope, at least 10 to 20 per slope, with a chalk circle and date reference card
• Soft metal collateral: gutters, downspouts, roof vents, flashings, HVAC fins, window screens, painted surfaces
• Test squares: marked 10-by-10 foot sections with impact counts visible
• Damage to adjacent structures such as fences, sheds, and vehicles
• Matte, sheen, and granule exposure close-ups on impacted mats
• Neighboring properties with visible storm damage

Drone Imagery

High-resolution drone orthomosaics capture damage patterns across the entire roof in a single image. They are especially useful for showing directional patterns consistent with wind and impact patterns consistent with hail. Consider a drone pass on any claim where the engineer's photos are sparse.

Core Cuts and Test Squares

A core cut shows the shingle mat under the granules. Recent impact fractures show clear mat exposure. Older damage or foot traffic typically does not. If the carrier's engineer did not perform core cuts, a contractor-supervised test square with documented counts and depth of impact can add significant weight.

Storm Data

Pull reports from NOAA Storm Events Database, NCEI, CoCoRaHS, and commercial sources like HailTrace, Interactive Hail Maps, and RedZone. Confirm the hail size at the specific property coordinates, not the nearest reporting station. If the carrier's report uses a general hail size that is smaller than what fell at the property, document the mismatch.

For more detail on building a strong hail claim file, see our hail damage claims guide.

Retaining Your Own Independent Engineer

There is a point in most engineer-report disputes where the evidence needs a counter-report from a licensed professional engineer retained by the homeowner. Doing this correctly is the difference between a rebuttal that gets taken seriously and one the carrier ignores.

When to Bring in an Independent Engineer

• The denial is based primarily on an engineer's report
• The claim value is high enough to justify the engineer's fee (typically 1,500 to 3,500 dollars)
• The documentation package already includes strong photos and storm data
• The carrier has refused to reopen after a complete rebuttal letter
• Appraisal or litigation is on the horizon

What to Look for in an Independent Engineer

• A licensed PE in the state where the loss occurred
• Experience with residential roofing forensic work (not just commercial or structural)
• No history of carrier-only work (balance of policyholder and carrier experience is ideal)
• Willingness to appear in appraisal or litigation if needed
• Clear engagement letter with scope defined by the policyholder, not the carrier

What the Independent Report Should Cover

A strong policyholder-side engineer report will address each specific conclusion in the carrier's report, explain where the carrier's analysis is incomplete or incorrect, provide independent observations with photographs, correlate the observations with storm data, and conclude with a clear opinion on causation. It should be written to withstand cross-examination.

Who Pays for It?

In most cases, the homeowner (or their contractor, if advancing costs) pays for the independent engineer up front. Some policies reimburse "expert fees" as part of a claim-related cost provision. Some state bad faith or UPPA statutes allow recovery of expert costs if the carrier is found to have unreasonably denied the claim. Check your state rules before quoting the homeowner a cost.

State Bad Faith Standards and Why They Matter

The mention of a bad faith claim often changes how a carrier handles a disputed file. You do not need to be a lawyer to understand the basic framework, and mentioning it in writing (professionally, without threats) is often the catalyst that prompts reinspection or reopening.

What Bad Faith Means in Insurance

Bad faith is a legal doctrine that holds insurers liable beyond the policy limits when they unreasonably deny, delay, or underpay claims. Every state defines bad faith differently, but common elements include:

• Absence of a reasonable basis for denying the claim
• Knowledge of or reckless disregard for the lack of a reasonable basis
• Failure to conduct a reasonable investigation
• Failure to communicate findings or pay undisputed portions promptly

State Examples

How the Bad Faith Lens Changes the Conversation

When a rebuttal letter references the state's bad faith framework (calmly, factually, not as a threat), the claim moves from the desk of a first-level adjuster to a supervisor or large-loss unit. That alone often results in a reinspection or reopening. The goal is not to file suit. The goal is to signal that the file has been documented and escalation is possible.

Professional references to bad faith standards work. Hyperbolic threats do not. Keep the tone measured and the citations accurate.

How to Write the Rebuttal Letter

The rebuttal letter is the centerpiece of the engineer-report dispute. Here is the structure that works.

Opening

State claim number, date of loss, property address, carrier, and the specific report being rebutted (firm name, report date, engineer name and license number). Identify who you are and your authorization to act on behalf of the homeowner.

Acknowledge the Report

Briefly acknowledge the report exists and was reviewed. Do not attack the engineer personally. Stick to the analysis.

Point-by-Point Rebuttal

Address each of the carrier report's key conclusions in order. For each:

• Quote the conclusion directly
• Explain where the analysis is incomplete or unsupported
• Cite contradicting evidence (photos, storm data, independent observations)
• Reference the correct standard or source where the carrier's report diverges

Independent Evidence Summary

Summarize the policyholder's documentation package: photo count, drone imagery, storm data sources, test square counts, manufacturer correspondence, and independent engineer findings (if applicable).

Policy and Statutory Framework

Reference the Loss Settlement provision, the insurer's duty of good faith, applicable state statutes, and any UPPA or prompt payment obligations that bear on the situation.

Requested Action

State clearly what you are asking for: reopening of the claim, reinspection with the independent engineer present, withdrawal of the denial, and issuance of a proper scope and payment. Set a reasonable response deadline (10 to 14 business days).

Closing

Sign professionally. Attach the full evidence package. Send by email with read receipt and by certified mail. For ready-to-use templates, see our supplement letter templates and our broader guide to handling a denied roofing claim.

Escalation Path: Reinspection, DOI, Appraisal, Counsel

If the rebuttal letter does not move the file, there are four escalation options in roughly ascending order of leverage.

1. Reinspection Request

Most carriers will grant a reinspection when presented with a detailed rebuttal and new evidence. Request the reinspection in writing, name the specific issues to be re-examined, and request that the inspection include your independent engineer or an independent contractor as an observer.

2. Department of Insurance Complaint

Every state has a department of insurance (or equivalent) that accepts consumer complaints. A DOI complaint does not obligate the carrier to change the outcome, but it does require a written response from the carrier and creates a record that can be referenced later. In many states, DOI complaints trigger market conduct attention that carriers take seriously.

3. Appraisal

When the dispute is about the amount of the loss (including scope and pricing), appraisal is the contractual dispute resolution mechanism. Each side selects an appraiser, the two select an umpire, and the panel decides the amount. See our detailed appraisal process guide for the mechanics. Appraisal is especially effective when the engineer report has been rebutted with independent evidence and the remaining dispute is about scope.

4. Policyholder Counsel

When the denial implicates coverage (not just amount), or when the carrier has acted in a way that triggers bad faith concerns, refer the homeowner to a licensed policyholder-side attorney. Do not provide legal advice. Provide referrals to attorneys who handle first-party property insurance disputes in your state.

The End-to-End Rebuttal Workflow

Here is the practical workflow from denial letter to reopened file.

1. Get the full engineer report. Not just the denial letter. Request the complete report with all photos, data sources, and appendices.
2. Read the report inside out. Photos and observations first. Then conclusions. Identify gaps.
3. Pull storm data. Confirm hail size and wind speed at the property coordinates.
4. Rebuild the documentation. Reshoot the roof if photos are weak. Drone imagery. Test squares. Soft metal collateral.
5. Review the adjuster's estimate. Run the estimate through a review checklist for missing line items and pricing gaps.
6. Decide on an independent engineer. If the claim value and dispute structure justify it, retain one.
7. Draft the rebuttal letter. Point-by-point. Evidence cited. Policy and statute referenced.
8. Submit and track. Email with read receipt and certified mail. Follow up at 5 and 10 days.
9. Escalate if needed. Reinspection, DOI, appraisal, counsel in that order.
10. Keep the file organized. Every document becomes evidence if the dispute escalates. For best practices, see our supplement guide.

The Bottom Line

A carrier-retained engineer report is not the end of a claim. It is an opinion, produced by a firm paid by the carrier, that is rebuttable with better evidence and a clear understanding of how these reports are structured. Roofing contractors who know the playbook pull claims back from denial regularly. The homeowners who walk away are almost always the ones who did not know they had options.

Your job is to know which firm wrote the report, where the soft spots typically sit, what documentation will contradict the key conclusions, when to bring in an independent engineer, and how to frame the rebuttal within the policy and state law. Be calm, be thorough, and be persistent. Carriers are counting on most engineer-report denials to stick. They do not have to.

For tools that help you analyze adjuster estimates, identify supplement opportunities, and organize a complete claim file, explore ClaimStack. The platform compares adjuster estimates against current Xactimate pricing so you can spot underpayments, missing line items, and scope gaps that support a full rebuttal.