Dr. Caroline Engel Purcell:

I thank Dr. Daly. The short answer is that a more nuanced approach is required. A few years ago, in 2019 and 2020, we worked with the Heritage Council to design a lecture series. It was very well attended and sold out within two days. We kept expanding numbers. Approximately 120 specifiers attended that five-day lecture series. We brought together a host of professionals, covering all aspects of retrofit in traditional and historic buildings. That was the first step. We now need to move onto training and, possibly, accreditation. To begin, anyone specifying works on traditional buildings needs to understand how they are constructed, how the buildings' physics work and how heat and moisture move through them. This is commonly referred to as the hydrothermal performance of the building. That is the basic conservation training required to understand how these buildings work.

We now have hygrothermal risk assessment, which is condensation risk assessment using modelling and thermal bridge modelling. These are skills professionals will need into the future in order to make sure specifications for the retrofit of these buildings are safe and appropriate.