What is a roofing supplement?
It's the difference between eating the scope the adjuster missed and getting paid for it.
Roofing supplement
insurance supplement
A roofing supplement is a documented request a roofing contractor submits to an insurance carrier for work items the initial claim estimate missed or underpaid. It lists the extra scope in the carrier's own pricing format, ties proof to each line, and asks for a revised payout before the job is billed.
Supplements exist because the first estimate is written fast, often from a short roof visit. Roofs hide scope: decking that only shows once shingles come off, code-required items the first scope skipped, materials the local market prices its own way. When the contractor finds the gap, the supplement is the formal channel to get it paid inside the open claim.
Format carries real weight here. Carriers price claims in Xactimate line items, so a supplement written the same way gets reviewed entry by entry. IA Solutions, a firm of licensed independent adjusters, puts the average recovery at seven to eight thousand dollars per residential claim. Their figure, and worth checking against your own claims.
Why it matters
On an insurance-funded roof, the supplement is where margin lives or dies. IA Solutions frames the stakes as 20 to 40 percent of revenue left on the table when a crew treats the first estimate as final. Skip the supplement and every storm job gets a quiet discount equal to whatever the adjuster missed.
- 01The supplement stays inside the existing claim: no appraisal demand, no lawsuit, no reopened coverage question.
- 02Each line item needs its own evidence, usually a photo or a measurement, or the reviewer drops it.
- 03Denied items answered in writing become an auditable dispute; phone arguments vanish.
- First estimate paidThe adjuster's scope, in Xactimate line items.
- Gap foundOn the roof, or in the tear-off.
- Supplement builtMissed items priced in the same line-item language.
- Evidence attachedA photo or measurement per line.
- Carrier reviewsApproves, denies or asks for more.
- Payout revisedIt closes on the documented scope.
01How is a supplement different from a change order?+
A change order is between the contractor and the homeowner; a supplement is between the contractor and the carrier, inside an open claim. Same instinct, different payer. Work the homeowner chose goes on a change order. What the loss requires but the estimate missed goes on a supplement.
02Who actually writes supplements?+
Contractors handle it three ways: a supplementer in the office, a third-party supplement service, or software that extracts and drafts the line items for review. The skill is the same in all three: matching real scope to carrier pricing, with proof attached.
