FAQ
Short answers, including the parts that are not built yet.
You type an address. RoofCalc looks up its coordinates, then tries its roof data sources in order and uses the first one that returns the building. The app shows the roof area in square feet, the number of facets and a complexity rating. Squares, pitch and a waste factor are calculated too, but not all of them are on the result screen yet. Each successful measurement is saved to your account.
Paid plans start with Google's Solar API, which has building data with the pitch of each roof section, graded by imagery quality (high, medium or low). Every plan falls back to OpenStreetMap building footprints, and the Free plan uses OpenStreetMap only. A footprint has no slope, so on that path RoofCalc uses the pitch from the building's map tags when there is one, and otherwise an estimate for the region or the building type.
RoofCalc does not publish an accuracy figure, because we have not yet measured one against a reference set of roofs. Instead, every result comes back with its data source and a confidence score, and lists the better sources that were skipped for that address and why. The app shows a two-level confidence label for now; the score and the source list are in the measurement data. Edge lengths are estimates. Check the roof on site before you order materials or sign a contract.
You get a "no building data" message and no measurement credit is used. Drawing the roof outline by hand is not built yet.
Today the app shows roof area, facets, complexity and a confidence label. A fuller report in the format contractors already use (total squares, predominant pitch, ridge, eave and rake lengths, valley and hip counts, and a waste factor with the reason) is coming soon: the numbers are calculated for OpenStreetMap results, but the in-app report, PDF export and sharing are not finished. RoofCalc is not affiliated with, endorsed by or sponsored by GAF. GAF is a trademark of its owner.
Not yet. You can save your price per square foot, tear-off per layer, decking per sheet, disposal fee and margin on your account today. Applying those rates to a measurement to build a quote, and saving or sending a quote, are coming soon.
No. RoofCalc is a web app: open https://roofcalc-flutter-web.vercel.app in your browser and sign in.
Not yet. Team workspaces, seats and invites are coming soon. Today each account belongs to one person, with its own measurements and credits.
Not yet. RoofCalc is built for roofing contractors today. A homeowner estimate request and a homeowner portal with a roof health score, a maintenance checklist and weather alerts are coming soon.
Email hello@harmonyaitechnologies.com from the address on your account and we will reset it by hand. Resetting it yourself by email is not built yet.
2 measurements when you sign up, from OpenStreetMap building footprints, with a confidence score on every result. No card is needed. The Free plan is meant to refill every 2 months, but that refill is not switched on yet.
Not yet. Paid plans open soon. Contractor Pro will be $49 per month for 100 measurements, trying Google Solar roof data first. You start on Free and upgrade in the app once billing opens.
No. A credit is used only when RoofCalc measures the roof and saves the result to your account. If the address cannot be found, or no data source has the building, nothing is taken from your balance.
Each successful measurement is saved to your account with its address and results. To measure it, the address is sent to a geocoding service (Mapbox, or OpenStreetMap's Nominatim) and its coordinates go to the roof data sources: OpenStreetMap, Microsoft's Planetary Computer (a small area around them), and Google Solar on paid plans. The app also records the addresses you measure in its product analytics (PostHog). We do not sell them. The privacy policy has the full list.
Email hello@harmonyaitechnologies.com. Billing questions are answered on the pricing page, and the security page lists what is and is not in place.