What a measured backup exhibit is
A measured backup exhibit is a document that states roof quantities for a specific property: area in squares, facet count, ridge, hip, valley, eave, and rake lengths, and pitch by plane. It is not a photo and it is not an opinion; it is a quantity record tied to the property address, delivered as a PDF, an ESX file for Xactimate®, or an XML file for Symbility®.
In a change-order context, the exhibit does one job: it replaces a written claim of 'more roof than originally scoped' with a document showing exactly which quantities moved and by how much. That is what turns a request into a package a desk can evaluate quickly.
Why the package needs backup before it needs a price
A change-order request that leads with a new total invites a line-by-line audit from scratch. A request that leads with a measured comparison lets the reviewer see the specific facet, length, or pitch that changed and evaluate that one item. The backup does the explaining so the narrative can stay short.
This also protects the sequence of the file. If the original estimate was built from one measurement source and the revision is built from another, the package should say so plainly rather than leaving the reviewer to notice the discrepancy on their own.
Change-order package checklist
- Copy of the original approved scope or estimate, with the disputed line items marked
The reviewer needs the starting point in front of them, not just the revised number.
- Current measured backup exhibit (PDF, ESX, or XML) covering the affected planes
This is the document that replaces description with quantity.
- Side-by-side quantity table: before, after, difference
A single table answers 'what changed' faster than a paragraph.
- Short written narrative citing the specific facet, elevation, or condition driving the change
Ties the quantity delta to a cause instead of leaving it as an unexplained number.
- Photos of the specific area referenced in the narrative
Confirms the condition described exists at the location claimed.
- Line-item code references matching the estimating platform in use
Lets the reviewer map the change directly into Xactimate® or Symbility® without re-deriving it.
- Date, preparer name, and delivery method noted on the package
Establishes when the revision was submitted and through which channel.
Before-and-after quantities: a worked example
The figures below are a HYPOTHETICAL EXAMPLE only, built from the standard pitch-multiplier formula to show how a quantity table should read. They are not from any real claim or property.
Formula: pitch multiplier = square root of (rise squared + run squared), divided by run. For a footprint of 1,900 square feet, a 4/12 pitch (multiplier 1.054) and a 6/12 pitch (multiplier 1.118) produce different roof areas from the same footprint. Area = footprint x multiplier; squares = area / 100.
| Line item | Original scope | Revised (measured backup) | Difference |
|---|---|---|---|
| Roof area (footprint 1,900 sq ft, pitch as noted) | 4/12, 2,002.6 sq ft = 20.03 squares | 6/12, 2,124.2 sq ft = 21.24 squares | +121.6 sq ft (1.21 squares) |
| Ridge length | 85 LF | 112 LF | +27 LF |
| Hip length | 38 LF | 58 LF | +20 LF |
| Valley length | 22 LF | 22 LF | No change |
Sample numbers only, for illustration of table format. Replace with the actual footprint, pitch, and lengths from the property in question before submitting a real package.
Attaching the exhibit and entering the revised lines
Once the exhibit is finalized, attach it as the primary document in the change-order package rather than summarizing it in the body text. A PDF-only report ordered from the site sponsor, Sketch My Roof, at the published $25 rate, or an ESX + PDF order at $29 for cases going straight into Xactimate®, works as that exhibit; see Sketch My Roof roof measurement reports for current formats and pricing.
To bring the revised quantities into the estimate, import the file via the Sketch import option or the equivalent import path in the estimating platform; menus vary by version, so verify the exact steps in your build against the platform's own documentation before relying on a specific click path.
Frequently Asked Questions
What is measured backup in a change-order context?
Does the change-order package need photos in addition to the measured exhibit?
Should the before/after table use real numbers before I submit a package?
Which file format should back a change order going into Xactimate®?
Sources
- ESX and PDF import procedures into Xactimate®: Xactimate® official documentation (as of August 2026)
- XML import procedures into Symbility®: Symbility® / CoreLogic claims documentation (as of August 2026)
- Published PDF-only report price ($25) and ESX + PDF price ($29): Sketch My Roof roof measurement service facts (as of August 2026)