Psi-value calculator

The Keystone Group launch Psi-value calculator

  • 12 Feb 2016

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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. 


Ballyreagh Industrial Estate,
Sandholes Road,
BT80 9DG


Visit the Keystone Group website

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