U values

THERMAL VALUES

Thermal value double glazed unitsSlenderpane slim double glazed units can achieve a range of u values to suit the nature of the project.

These range from 1.9 W/m2K u value soft coat low E glass and Krypton gas and this goes down to 1.0 u value depending on the cavity and glass used .

Sightlines of our warm edge spacers do not affect the thermal value and these are 8mm (Heritage), 8mm (Standard), 9mm or 11mm if required.

N.B. We recommend that a minimum of 3mm o/a is deducted from the tight size of the opening to arrive at the unit size.

The lower the u value the better the thermal efficiency of the unit.

Below normal soft coat with normal fill rate. Light transmission 80%

Units U-Value
 4-4-4 soft coat, Krypton 90% fill 1.9
 4-6-4 soft coat, Krypton 90% fill 1.5
 4-8-4 soft coat, Krypton 90% fill 1.3
 4-10-4 soft coat, Krypton 90% fill 1.1
 4-12-4 soft coat, Krypton 90% fill 1.1

Below soft coat 1 with normal fill rate. Light transmission 76%

Units U-Value
 4-4-4 soft coat 1, Krypton 90% fill 1.8
 4-6-4 soft coat 1, Krypton 90% fill 1.4
 4-8-4 soft coat 1, Krypton 90% fill 1.1
 4-10-4 soft coat 1, Krypton 90% fill 1.0
 4-12-4 soft coat 1, Krypton 90% fill 1.0