Email hello@buildmaths.com.au. Corrections get priority and are credited on the page if you would like them to be.
Useful things to include
- Which calculator, and the link with your numbers in it (use the Share link button).
- What you expected and what you got.
- For a product size or coverage figure, where the correct figure comes from, such as the manufacturer's data sheet.
What we cannot help with
We do not give advice on your project, size structural members, or recommend suppliers. For those you need a builder, an engineer, or the product manufacturer.
BuildMaths is published by a Victorian building company. Postal address available on request.