The Keystone Group has launched an online Psi-value calculator designed for energy assessors and architects.
The free-to-use calculator helps specifiers easily obtain a product’s Psi-value to meet regulations and code of sustainable home requirements.
Energy assessors can input the lintel Psi-value into their SAP calculations and view the performance benefit with ease. Specifically calculated Psi-values will help lower the y value within the SAP calculation assisting Part L compliance.
All Psi-value calculations are generated by trained thermal modellers using Physical Trisco software to ensure accuracy.
