Contact and corrections
Corrections and privacy.
Use the inbox that matches your request so it reaches the right review queue.
General website questions, broken pages, calculator problems, and accessibility issues.
Formula errors, disputed assumptions, source corrections, and article revisions.
Privacy questions, data requests, and concerns about analytics or advertising choices.
Report an editorial error
Email editorial@congonha.com with the page URL, section heading, a clear description of the problem, and a source or calculation we can check. Reports that could change a result are reviewed first, and material corrections receive an updated revision date.
Report a calculator problem
Email contact@congonha.com with your device and browser, the values you entered, the result you expected, and the result you received. Crop screenshots to the relevant fields and remove any identifying details.
Privacy and data requests
Send privacy and data requests to privacy@congonha.com. NookPlan calculators run locally in your browser and do not send dimension inputs to our server in the current version. See the Privacy Policy for details about hosting logs, cookies, advertising, and applicable data choices.
What we cannot answer remotely
We do not provide construction instructions by email and cannot confirm structural safety or production dimensions from photographs. Those decisions require a qualified local professional who can inspect the site.