THE ESTIMATING ANSWER
For one damaged duct run, start with a defined scope and measurement basis. Measure damaged run, duct size, joint count and access height. Separate replacement duct, sealant and insulation allowances. Price the listed tasks separately and state the condition that would require a revision: Further inaccessible damage requires investigation beyond this local repair.
This guide uses a fictional project in Kingston, Ontario: One damaged duct run. Its matching estimate and PDF give each scope decision a visible CAD cost line. Use the document to understand the structure; verify the actual building, product schedule, labour and supplier inputs before preparing a client quote.
1. Define the measured job
Repair an identified accessible ventilation duct section and reinstate insulation and supports without redesigning the full system. Measure damaged run, duct size, joint count and access height. Record the measurements and existing condition in the estimate before turning quantities into line items. The scope should make clear why this is a separate project from a broader renovation or maintenance quote.
Measurement basis: Measure damaged run, duct size, joint count and access height.
2. Build a product and labour schedule
Separate replacement duct, sealant and insulation allowances. This example has 7 distinct lines, including duct inspection and access, damaged duct removal, replacement duct allowance. Use actual supplier prices and labour inputs for a customer job; the displayed amounts are fictional document inputs.
Selections to confirm: Separate replacement duct, sealant and insulation allowances.
3. Sequence the work and handoffs
Inspect adjacent joints before cutting and verify airflow after repair. Show which task depends on access, a selected product or another trade. If that dependency is still open, label the price preliminary and identify the information needed before a firm quote.
Work sequence: Inspect adjacent joints before cutting and verify airflow after repair.
4. Set a change boundary
Further inaccessible damage requires investigation beyond this local repair. The example excludes air-handler replacement, full duct cleaning or concealed ceiling restoration. Record the discovery, agree the revised work and update the estimate before adding it to the job.
If the job changes: Further inaccessible damage requires investigation beyond this local repair.
Review the Canadian job address
Inspect the existing substrate, access and product selections at the property. Check any local trade or municipal requirements that apply and record unresolved conditions before preparing the final client document.
The damaged duct removal line uses 32 linear ft., approximately 9.75 m. Check the route, cuts and supplier unit before setting a real quantity. The example amounts are fictional CAD document inputs, not current rates for Kingston, Ontario or another community. A site visit and current supplier information are needed to replace them.
Work through the itemized calculation
Check each extension of quantity and rate in the paired PDF. Two lines from this project are:
- Damaged duct removal: 32 linear ft. × C$15.00 = C$480.00.
- Replacement duct allowance: 36 linear ft. × C$31.00 = C$1,116.00.
Adding all 7 rounded line amounts gives C$3,782.00. The PDF shows 0% tax and the same total 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.
| Work item | Quantity | Unit rate | Amount |
|---|---|---|---|
| Duct inspection and access | 1 job | C$235.00 | C$235.00 |
| Damaged duct removal | 32 linear ft. | C$15.00 | C$480.00 |
| Replacement duct allowance | 36 linear ft. | C$31.00 | C$1,116.00 |
| Joint and hanger allowance | 1 job | C$305.00 | C$305.00 |
| Duct fitting labour | 32 linear ft. | C$28.00 | C$896.00 |
| Insulation reinstatement | 32 linear ft. | C$15.00 | C$480.00 |
| Airflow check and cleanup | 1 job | C$270.00 | C$270.00 |
| Illustrative subtotal | C$3,782.00 | ||
Scope and pricing boundaries
Repair an identified accessible ventilation duct section and reinstate insulation and supports without redesigning the full system.
Outside this example: No air-handler replacement, full duct cleaning or concealed ceiling restoration.
Keep the product allowance, installation work and any unresolved condition visible as separate decisions. If access or the selected product changes, update the affected quantity or rate and explain the revision before the client relies on the estimate.
Before you send the estimate
- Measure damaged run, duct size, joint count and access height.
- Separate replacement duct, sealant and insulation allowances.
- Inspect adjacent joints before cutting and verify airflow after repair.
- Further inaccessible damage requires investigation beyond this local repair.
Check the business, client, property, dates, line extensions and notes. The accessible ventilation duct repair PDF example shows one way to present them. Its short PDF note lists the brief's scope exclusions; the fuller project limits above should guide your own scope.
Questions about this estimate
Which quantity controls this accessible ventilation duct repair estimate?
Measure damaged run, duct size, joint count and access height.
When should this accessible ventilation duct repair quote be revised?
Further inaccessible damage requires investigation beyond this local repair. No air-handler replacement, full duct cleaning or concealed ceiling restoration.
MAKE THE NEXT ESTIMATE YOUR OWN
Build an accessible ventilation duct repair 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.
