Contact us
Send us a message with the form below, or email info@trowelly.com. We read every message and reply by email.
Reporting a calculation problem
If a result looks wrong, please include:
- the calculator you used, ideally with the link from its “Copy link” button (it contains your inputs),
- the result you expected and why,
- the product or supplier figure you are comparing against, if any.
We fix confirmed errors as quickly as we can. We cannot give project-specific engineering, structural or code-compliance advice; for that, please speak to a qualified local professional.