Terms of Service
Last updated: July 20, 2026
Operator and Acceptance
Roofing Calculator (roofing-calculator.io) is owned and operated by RealMatrix PTE LTD, Singapore. By using this site, you agree to these terms. If you do not agree, do not use the service.
Service Description
The site provides free roof-pitch, area, rafter, panel, shingle, takeoff, and related planning tools, diagrams, and guides. Calculator inputs are generally processed locally in your browser. Features, supported inputs, formulas, and reference content may change as the service is corrected or improved.
Planning Estimates Only
Results are informational planning estimates, not shop drawings, structural engineering, code approval, construction instructions, safety advice, insurance advice, legal advice, a material order, or a contractor quote. Accuracy depends on your measurements and product inputs. Review the methodology and verify important decisions against current product documents, locally adopted requirements, actual site conditions, and qualified professionals.
Safety and Professional Verification
Roof work involves fall, electrical, structural, weather, and material-handling hazards. A displayed pitch category never means a roof is safe to access. Do not rely on this site to select fall protection, determine structural capacity, approve a roof assembly, or authorize work. Use appropriately qualified and licensed professionals where required.
Acceptable Use
You may use the site for lawful personal or business planning. You may not disrupt the service, attempt unauthorized access, introduce malicious code, evade technical protections, systematically scrape the service in a way that impairs normal operation, or reproduce and resell the site's original software, design, or content as your own service.
Intellectual Property and Sources
Original software, diagrams, design, text, and branding are owned by RealMatrix PTE LTD or its licensors. Public formulas, government publications, manufacturer documents, standards, and third-party marks remain subject to their respective rights and terms. A citation or link does not imply endorsement.
Availability and Warranties
The service is provided "as is" and "as available" without warranties of uninterrupted operation, completeness, accuracy for every project, merchantability, or fitness for a particular purpose. We may correct, update, suspend, or discontinue features at any time.
Limitation of Liability
To the maximum extent permitted by law, RealMatrix PTE LTD is not liable for indirect, incidental, special, consequential, or punitive losses arising from use of the site, reliance on an estimate, roof access, purchasing, construction, or inability to use the service.
Privacy and Third-Party Services
The Privacy Policy describes analytics, advertising, cookies, hosting, and service providers. Third-party websites control their own content and policies.
Governing Law and Contact
These terms are governed by the laws of Singapore. Questions may be sent to contact@roofing-calculator.io.