Calculates U-values according to the latest appropriate European standards and other documents. Covers most types of building element, except those that need to be assessed by detailed numerical analysis. Selects the correct method and the appropriate inputs according to the type of element being assessed. Changes to the data are immediately reflected in the calculated U-value, so that the effect of different options is readily assessed. This program does not cover dewpoint calculations. Runs on PCs only - not compatible with MACs. Currently supplied on CD. This new version also runs on Windows 10.
More details and updates to the software are available at http://projects.bre.co.uk/uvalues/
Related document: BR 443 Conventions for U-value calculations
A site licence (for 5+ computers) is also available.