Terms of use

Last updated: 31 July 2026.

Educational estimates only

RoofingCalculatorHQ provides calculators, guides and datasets for general information and preliminary planning. Outputs are estimates based on the inputs and assumptions shown on each page. They are not quotations, professional advice, engineered designs, code approvals, warranties or a recommendation to purchase a particular product or service.

Your responsibility

Before ordering materials, signing a contract or beginning work, confirm measurements, scope, structural requirements, permits, code obligations and current prices with appropriately qualified local professionals. You are responsible for the information you enter and for decisions made using the results.

Accuracy and availability

We work to keep formulas, links and market information useful and current, but prices, regulations, products and incentives change. We do not guarantee that every page is complete, error-free or continuously available. We may correct, update or withdraw content without notice.

Permitted use

You may use the public calculators and guides for personal or ordinary business estimating. You may not interfere with the site, misrepresent results as certified professional advice, or reproduce the site at scale in a way that falsely suggests endorsement. Separate licence terms displayed with an open dataset govern that dataset.

Liability

To the maximum extent permitted by law, RoofingCalculatorHQ is not liable for losses arising from reliance on an estimate, an unavailable service, or information supplied by third parties. Nothing in these terms excludes rights or remedies that cannot lawfully be excluded.

Contact

Questions or correction reports can be sent to contact@roofingcalculatorhq.com.