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Take the guesswork out of roof drainage. Built for professionals who need accurate results fast.

Simple pricing, unlimited access

Start with a 2-day free trial. Cancel anytime.

Dam Buster Design Monthly

2 Days for free then $9.99 / Month

Dam Buster Design Yearly

2 Days for free then $102 / Year

GET THINGS DONE

Professional calculators built to Australian standards - no spreadsheets, no guesswork.

Job Vault

Save your results into the vault. Retrieve and edit them at anytime to suit last minute changes in design.

Flow Rate Calculator

Calculate the flow rate of any roof in Australia with our flow rate calculator.

High Capacity Overflow (HCO) Calculator

The only HCO calculator in the industry that actually works.

Sump & Side Overflow (SSO) Calculator

Another industry leading calculator. Spec your SSO correctly and never worry about the design again.

Guides & Tutorials

Easy to follow guides and tutorials on not only our calculators, but on design philosophy and installation.

Ongoing Support

We are here to answer questions and queries you may have. We are also planning ongoing updates and new features.