EstimateClaims

Guide

What Is a Roofing Supplement?

Updated 2026-10-04

A supplement is a request for additional payment on an insurance claim after the carrier has issued its estimate.

Why supplements happen

A carrier estimate is based on what was visible and measured at the time. Items can be left out, underpriced or discovered later, for example hidden damage found during tear-off or items required by local code. A supplement documents the difference.

What a supplement contains

  • The line items to be added or corrected, in Xactimate or Symbility format.
  • Measurements that support the quantities, such as a roof report.
  • Photos of the existing conditions and the damage.
  • A short explanation of why each item is needed.

What to gather before you request one

  • The carrier's estimate.
  • Your own photos and notes.
  • Claim number, date of loss and the carrier's correspondence.

No guarantee

A carrier decides how to respond, and no one can guarantee the result. A clear, documented supplement gives the carrier what it needs to review the request.

See our supplement service.

Need a report or an estimate?

Order a measurement report, an estimate or a supplement.

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Page last updated 2026-10-04.