IGU Thermal Calculator

mm

The width of the cavity between the two panels of glass. Must be between 6mm - 25mm

mm

The width of the cavity between the two panels of glass. Must be between 6mm - 25mm
Front facing = coating on glass faces externally. Back facing = coating on glass faces internally

U-VALUE (CoG)

XX

W/(m².K)

Calculation of the steady state U-value of insulating glass units to EN673:2011 in compliance with NZBC Clause H1, v.5.

Version 3.0d (26 August 2022) Verified by BRANZ