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Terms of use
Last updated: October 23, 2026
By using instarista.com you agree to these terms. If you don't agree, please don't use the site.
Estimates only
Our calculators provide planning estimates based on the measurements you enter and on typical industry figures. Actual material requirements depend on the specific products you buy, site conditions, installation methods and local building codes. Results are not engineering, architectural or professional construction advice.
Before purchasing materials or starting structural work, confirm quantities with your supplier and consult a qualified professional where appropriate.
No warranty
The site and its calculators are provided "as is" without warranties of any kind. We work to keep them accurate, but we don't guarantee that results are complete, correct or suitable for your project.
Limitation of liability
To the fullest extent permitted by law, Instarista is not liable for any loss or damage arising from your use of the site or reliance on its results, including the cost of excess or insufficient materials.
Acceptable use
Please don't attempt to disrupt the site, scrape it at a volume that affects other visitors, or copy its content for republication without permission.
Changes
We may update these terms. Continued use of the site after changes means you accept them.