Ettix guides · Commercial property
How to compare commercial roofing bids
Put competing roof replacement quotes on the same scope before choosing a contractor.
Compare two quotes free Download the Excel checklist
Start with tear-off and the roof assembly
Check whether each contractor priced complete tear-off or a recover over the existing roof. Record membrane type, insulation thickness, flashing and drainage details. Cite the page so the project team can confirm the wording.
List exclusions and unit prices
Look for deck repair allowances, per-unit pricing, disposal and work around roof-mounted equipment. Ask for written clarification when a quote is silent. Add any confirmed extras before comparing totals.
Compare warranty coverage
Record the manufacturer and workmanship warranties separately. Ask what each covers, for how long and what conditions must be met.
Worked example
| Item | Quote A | Quote B |
|---|---|---|
| Base price | $82,000 | $74,000 |
| Existing roof | Full tear-off, p. 2 | Recover over existing roof, p. 1 |
| Deck repairs | Unit price on p. 3 | Ask for written pricing |
Ask Quote B for a full tear-off alternate before comparing the totals. The example uses fictional prices.
Try the worked comparison in RoofBidCheck.
See Nash County’s public roof replacement specification for examples of how real documents describe tear-off, insulation and deck repairs.