Separate measurement from roof condition
Estimate a preliminary budget from measured roof surface and a supported material scenario. A 2,000-square-foot roof-surface example from the current model is shown below, rounded to the nearest $100; it is a planning illustration, not a Washington city average, contractor bid, or roof inspection.
The calculator does not inspect whether the deck is sound, count every existing layer, judge access, or confirm what work a roof needs. Use the range to prepare questions, then have a provider review the roof, name the products and removal scope, and explain conditions that could change the proposal.
| Current-model example: roof-surface area | Planning range, nearest $100 |
|---|---|
| 3-tab asphalt · 2,000 sq ft | $10,200–$17,500 |
| Architectural asphalt · 2,000 sq ft | $10,500–$17,800 |
| Standing-seam metal · 2,000 sq ft | $18,300–$40,300 |
Check the material scenario before comparing totals
The current model includes selected 3-tab and architectural asphalt references and a standing-seam metal reference. It does not price cedar shake, designer upgrades as separate product lines, other metal profiles, or a material that is absent from its inputs.
Read the full estimate method for source notes and exclusions. Use the roof estimator only for a scenario it actually supports. A similar material name is not a substitute for a product quote.
- Use roof-surface area rather than the home’s floor area.
- Confirm the selected material and measurement source.
- Keep removal and project assumptions consistent across options.
- Treat each result as a planning estimate, not a bid.
Compare what each proposal includes
Ask whether the written scope covers removal, disposal, underlayment, flashing, ventilation work, property protection, cleanup, and completion records. Confirm how roof-deck repairs or additional layers will be measured, approved, and priced if they appear during removal.
Permits, tax, hidden repairs, difficult access, steep or high roof sections, and extra layers fall outside the calculator’s displayed range. The applicable requirements and site conditions belong in the project review and written proposal.
Move from a planning range to a written scope
Keep the estimate inputs with your project notes: measurement source, current roof material, known repairs, leak history, additions, skylights, chimneys, and access limits. These details help explain why two proposals may describe different work.
If you are still choosing a system, compare asphalt shingles, standing-seam metal, and cedar replacement as separate scopes. Then send your project details for a written estimate discussion.
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