EXAMPLE AT A GLANCE
This fictional Ottawa, Ontario flat roof membrane replacement example contains 7 itemized costs totaling C$20,565.00 before tax or markup. The app-exported PDF uses the exact quantities and CAD rates shown in the table, with scope limits explained below.
Project scope: One low-slope extension roof
Replace the waterproof membrane on one accessible low-slope extension roof with defined edge and outlet details.
The fictional project is set in Ottawa, Ontario. Cedar & Beam Builders and Jordan Taylor are example names, not a contractor and client case study. The matching guide explains how measurement, product selection and site conditions affect the estimate.
- Location
- Ottawa, Ontario
- Prepared by
- Cedar & Beam Builders · fictional business
- Prepared for
- Jordan Taylor · fictional client
- Issued / valid through
- September 25 / October 25, 2026
The 7 CAD cost lines
The table uses the exact items, quantities and unit rates in the app-exported PDF. Multiply each quantity by its rate to check the amount. These chosen figures demonstrate the document; they are not surveyed prices or suggested rates for Ottawa, Ontario.
| Work item | Quantity | Unit rate | Amount |
|---|---|---|---|
| Access and temporary weathering | 1 job | C$795.00 | C$795.00 |
| Old membrane removal | 420 sq. ft. | C$7.35 | C$3,087.00 |
| Deck preparation | 420 sq. ft. | C$4.90 | C$2,058.00 |
| Membrane system allowance | 460 sq. ft. | C$13.00 | C$5,980.00 |
| Membrane installation | 420 sq. ft. | C$16.00 | C$6,720.00 |
| Upstands and outlet details | 1 job | C$1,410.00 | C$1,410.00 |
| Waste and final check | 1 job | C$515.00 | C$515.00 |
| Illustrative subtotal | C$20,565.00 | ||
Check the arithmetic
- Old membrane removal: 420 sq. ft. × C$7.35 = C$3,087.00.
- Deck preparation: 420 sq. ft. × C$4.90 = C$2,058.00.
The rounded line amounts add to C$20,565.00. The PDF's tax field is 0%, so its illustrated total stays C$20,565.00 before any markup. The sample shows 0% tax only to make the arithmetic visible. Determine any applicable GST, HST or PST and markup for the actual work before sharing a quote.
Measurement to verify: Measure net roof area, upstands, penetrations, drainage falls and perimeter edge length. Product decision: Identify membrane system, insulation if selected and outlet components separately.
The old membrane removal line uses 420 sq. ft., approximately 39.02 m². Keep the actual site measurement and the supplier’s selling unit together when you replace this quantity.
Assumptions and exclusions
Inspect deck condition after stripping and maintain temporary weather protection.
Outside this example: No roof deck reconstruction, structural falls correction or interior repairs.
A wet or unsound deck changes replacement quantity and system specification. Review access, grades, drainage and seasonal conditions at the property. Check utility locations, product availability and any local design or municipal requirements that apply to the real scope. Confirm a change and update the estimate before adding work that was not in the base scope.
Download the actual app PDF
The PDF was exported from Estimates for this fictional Canadian job. It carries a concise version of the project scope, plus the same customer, cost lines, CAD amounts and total used here. Its note covers the fictional tax setting and the brief's full exclusion sentence; the article records additional assumptions that do not fit in that PDF note.
Build the next estimate from your own inputs
- Measure the actual site and describe the work boundary in plain language.
- Confirm the selected products, access and handoff responsibilities with the client.
- Replace every fictional rate with your own labour, supplier and subcontractor figures.
- Check the relevant GST, HST or PST treatment and markup for the job without copying this sample's zero entry.
- Preview each PDF page, total and exclusion note before sharing.
- Measure net roof area, upstands, penetrations, drainage falls and perimeter edge length.
- Identify membrane system, insulation if selected and outlet components separately.
- Inspect deck condition after stripping and maintain temporary weather protection.
- A wet or unsound deck changes replacement quantity and system specification.
Questions about this estimate
Which quantity controls this flat roof membrane replacement estimate?
Measure net roof area, upstands, penetrations, drainage falls and perimeter edge length.
When should this flat roof membrane replacement quote be revised?
A wet or unsound deck changes replacement quantity and system specification. No roof deck reconstruction, structural falls correction or interior repairs.
MAKE THE NEXT ESTIMATE YOUR OWN
Build a flat roof membrane replacement estimate.
Enter the job scope in Estimates on iPhone or Android or start from an AI-assisted draft. Check every quantity, rate, allowance, client detail and note before exporting the PDF. Some app features may require an in-app purchase.
