Our Temperature Factor Assessments, also called the fRsi Assessments, identify the risk of mould growth with a wall connection and are based on ISO 13788. The surface temperatures throughout the whole system are calculated using the same approach as the Interstitial Condensation calculation. The temperatures are dependent on the specified layer's R-Value proportion of total system R-Value, with the interior air film internal surface being the same as the indoor air temperature.
To undertake a Temperature Factor Assessment, select ‘Temperature Factor’ in the results area and click ’Run 1 Calculation’. Once complete, temperature and relative humidity are presented for one year. In addition, the fRsi value is presented numerically and set against the local climate.