Terms of Use & Calculator Disclaimer

Effective September 14, 2026. By using DIYSum, you agree to use the site and its calculator results as planning information only.

Planning estimates, not professional advice

DIYSum provides estimates based on the dimensions, product coverage and assumptions you enter. Results are not engineering, architectural, structural, electrical, plumbing, code, installation, tax, legal or purchasing advice.

Check project requirements

Confirm material type, dimensions, coverage, waste allowance, structural requirements, installation specifications, permits and local codes for your project. Actual layouts, cuts, site conditions and manufacturer requirements can change material needs.

Confirm before buying

Package coverage, bag yield, density, supplier increments and product quantities vary. Read the product label and confirm ordering requirements, availability, minimums and delivery terms with your supplier before purchasing.

Cost estimates

Cost estimates include only prices, tax and delivery values you enter. Labor, tools, equipment, permits, disposal, supplier surcharges and unlisted materials may not be included. Tax fields are arithmetic assumptions, not a determination of the applicable tax rate or taxable items.

No warranty

DIYSum is provided on an “as is” and “as available” basis. While we work to make calculations clear and accurate, we do not guarantee that results are complete, error-free or suitable for a particular project.

Your responsibility

You are responsible for checking measurements, product specifications, project requirements and purchase quantities before acting on a result. When a mistake could affect safety, code compliance or a significant purchase, consult an appropriate qualified professional or supplier.

Site availability and changes

Calculators, assumptions, features and site content may be corrected, changed or removed as DIYSum evolves.

Contact

Questions or suspected calculator errors can be sent to hello@diysum.com.