Terms of use
By using WindowTally, published by ZIRA Technologies, you agree to these terms.
Estimates, not quotes
The calculator and guides give planning estimates based on public data and stated assumptions (see how our estimates work). They are not a quote, an offer or professional advice. Real prices depend on your home, your contractor and conditions found during installation. Always get written quotes from licensed contractors before making decisions.
No warranty
The site is provided "as is." We work to keep it accurate and current, but we don't guarantee that any estimate, figure or article is complete, correct or up to date. To the extent the law allows, we are not liable for any loss arising from your use of the site.
Tax and legal information
Information about tax credits, rebates, permits or building codes is general and may change. Check with the relevant agency, your local building department or a tax professional.
Links to other sites
We link to other websites as sources. We don't control them and aren't responsible for their content.
Using our content
You may share links to any page and quote short passages with a link back. Please don't copy whole pages or our data tables without permission.
Changes
We may update these terms; the date at the top shows the latest version.