How to Write a Roofing Insurance Supplement That Gets Approved

A roofing insurance supplement is only as strong as the paperwork behind it. I've seen contractors write up legitimate line items, fax them over, and watch the adjuster kill them in 48 hours because there was nothing to push back against. No code citation, no manufacturer requirement, no photos tying the damage to the line. Just a number floating in Xactimate with no spine.

I ate a few of those before I figured out how to build supplements that actually hold together. Here's what changed.

Start With the Adjuster's Real Objection

Adjusters don't deny supplements because they hate you. They deny them because their desk manager will question anything that isn't supported. So the real job isn't writing a supplement, it's removing every reason to say no.

The three most common objections I've seen:

• "That's not required by code." Then cite the code. IRC R905 covers roofing installation requirements. Your local amendments may go further. Look them up, write them down, include the section number in your notes field.
• "The manufacturer doesn't require that." Then pull the installation manual. Most manufacturer warranties require specific underlayment, nail patterns, starter strip, drip edge dimensions. That PDF is your evidence.
• "We already included that." Then show line by line where it's missing from their estimate and what it costs. Don't argue. Just show the gap.

Every line item you're supplementing needs to answer at least one of those objections before the adjuster even asks.

The Lines That Get Denied Most and Why

Drip edge is the classic fight. Adjusters leave it off or underprice it constantly. Your answer is the manufacturer's installation guide stating drip edge is required for warranty validity, plus your local code section. If you're in Florida or Texas where wind-driven rain provisions are in the building code, cite that too. Suddenly it's not you asking for money, it's you documenting a code-required item.

Starter strip is the same story. A lot of estimates still carry a cut-shingle credit instead of a dedicated starter. If you're installing a manufacturer's starter product, that credit is wrong. Show the product spec sheet.

Decking is where the real money usually lives. If you found soft spots, rotted OSB, or inadequate thickness for your region's requirements, you need photos of every sheet before it gets covered. Not one hero shot. Individual photos, labeled by location on the roof. "Northwest corner, third row from ridge" is infinitely more defensible than a wide shot of a torn-up deck.

Ice and water shield is geography-dependent but still gets fought constantly. Pull your local code. In most northern states it's required in valleys, eaves, and sometimes full coverage depending on roof pitch and exposure. If the code says it, write the code section on the supplement.

Photo Documentation That Actually Supports Your Roofing Insurance Supplement

Bad photo documentation is probably why more supplements die than any other reason. Adjusters can't approve what they can't see, and a blurry picture from 30 feet away proves nothing.

Here's the standard I hold my crews to:

1. Four corners of the roof before tearoff. Full shots showing overall condition and storm damage pattern.
2. Every damaged or questionable area up close, with something for scale. A tape measure or even a shingle laid flat next to the damage tells the story faster than any description.
3. Decking photos before the new deck goes down. Every sheet you're replacing. If you can write the sheet number in chalk before you shoot it, even better.
4. Flashing and penetration conditions. Chimney, pipe boots, valleys. Adjusters love to argue that the flashing was pre-existing. Your pre-tear photos are the answer.
5. The damage pattern that proves wind or hail. Bruised shingles, granule loss concentrated on one exposure, cracked tabs. Show the pattern, not just one example.

Timestamp your photos. Most phones do this automatically but double-check your settings. A supplement with 80 timestamped, labeled photos and a clean summary sheet reads completely differently than a folder of unnamed JPEGs.

Writing the Supplement Document Itself

Keep your format clean. One page summary at the front: total supplement amount, number of line items, brief explanation of why each category is warranted. Then the detail behind it.

For each line item, include:

• The line description as it would appear in Xactimate or your estimating software
• Why it wasn't included in the original estimate or was undervalued
• Your supporting evidence (code section, manufacturer doc, photo reference)
• The dollar amount you're requesting

Don't bury the adjuster in narrative. Short, referenced, specific. "IRC R905.2.8.2 requires drip edge at eaves and rakes. Manufacturer installation guide (attached, page 7) specifies drip edge for warranty compliance. Original estimate does not include drip edge. Supplement request: $X."

That's it. That's the whole argument for that line. Move on.

Following Up Without Being a Pain

Send the supplement, then call in 48 hours. Not to pressure. To ask if they received everything and if there are any documentation gaps you can fill. Adjusters who are on the fence often approve supplements when you make their job easier rather than harder.

If it gets denied, ask for the specific reason in writing. Sometimes "denied" means "we need the manufacturer document" and that's fixable in an afternoon. Sometimes it means they're going to fight it, and then you have a decision to make about escalating to the carrier's supervisor or bringing in a public adjuster.

Track your supplement outcomes. Which line items get approved consistently, which get fought, which carriers pay and which ones stall. That data will change how you write the next one.

Running a roofing company means fighting for every dollar you've earned. A well-built supplement isn't a negotiating tactic, it's documentation that you did the right job the right way and the claim needs to reflect that.