Sometimes roofs can't follow the DTS method and you need to work outside the box. Our suite of calculators help you design around these constraints and gives you everything you need for a performance solution.

Our Calculators currently include;
• Flow Rate
• High Capacity Sump
• Sump & Side Overflow
• More planned

Got a few too many jobs on the go?

The Job Vault allows you to group your calculations to specific jobs without worrying about losing track of any.

Easily change previous calculations or just single components when the eventual design revisions take place.

Your key source of information.

Get information from a range of technical documents, guides, how-to videos and real world examples.

Get technical support when you need it.

We are here to assist with any technical or calculator issues and questions you may have.

The site grows as time goes on, we aim to introduce a number of other calculators and features as well as have a community voting system for feature and calculator requests.