Estimate your roof size, materials and a planning range
Roof Ottawa estimates roof area from your house footprint, storeys, roof type and pitch, and gives the materials and a planning range before you call roofers.
Guide revision: 2026-09-23
3-step walkthrough with voiceover, recorded from the same checked steps.
Voiceover: Kokoro text-to-speech (Apache 2.0).
How do I start?
Open Roof Ottawa and tap Start estimate. No account. You need the house length and width (ft) — outside measurements are fine.
Open Roof OttawaWhat do I do next?
- 1
Open Roof Ottawa
Open Roof Ottawa from the Apps Hub.
Estimate roof size, pitch and materials — "Start estimate".
- 2
Describe the house and roof
Type your postal code and the house length and width (ft), then pick the storeys, roof type, pitch and material.
The estimate uses your house footprint and roof.
- 3
Calculate
Tap "Calculate planning estimate".
The planning estimate: roof area, squares, materials and a range — not a quote.
What result should I expect?
A roof area, the material quantities and a planning range, with the complexity flags (valleys, dormers, skylights, chimneys…) you ticked. It is a quote-preparation range, not a contractor price.
How do I save, share or get help?
The estimate is on the page. "Save a project summary" at the bottom asks for your name and email first, so it was not tested in this guide.
Every screenshot here was taken while doing these exact steps on the app's current build (3fcc5c7), on a phone-sized screen, signed out, on 2026-09-23. Steps that need an account are marked. Nothing was submitted or bought.
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