Use the site as planning guidance, not as a guarantee.

• Use the calculators and guides for planning and informational purposes.
• Check product labels, package sizes, supplier specifications, and local requirements before purchasing or installing material.
• Do not rely on the site as a substitute for professional judgment where safety, structure, code, or licensed trade work is involved.

• Results depend on the measurements and settings entered by the user.
• Defaults such as waste, coverage, yield, and depth are planning shortcuts, not guarantees.
• The site is provided as-is and does not offer a warranty that every result is complete, current, or correct for every product or project condition.

• Nothing on the site is engineering, architectural, structural, legal, or licensed trade advice.
• Local code, permitting, drainage, slope, substrate, and safety decisions should be reviewed separately when the project requires it.

• The site content, calculator logic, examples, and page copy remain the property of the site operator unless stated otherwise.
• Reasonable personal use and internal planning use are allowed, but bulk copying, scraping, republishing, or automated reuse of the site content is not allowed without permission.
• Quoted references to the site should not imply endorsement, certification, or professional approval that the site does not claim.

• The site operator can update, remove, or replace pages, formulas, defaults, or examples without advance notice.
• When an estimate-quality issue is reported, the correction path is handled through the Editorial & Estimate Policy.

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