Window and door performance.
Technical details and test results of a
standard double glazed uPVC window.


Conform to Australian Standards

Technical Details and Performance

Elevation of double glazed sample window

To evaluate quality and performance of windows and doors in Australia, they get tested. Measured are especially air infiltration, water penetration, ultimate strength and operating force of the windows and doors. Values of noise and thermal insulation are determined and published directly by the manufacturers. The results can then be converted for window systems with the same design but with different dimensions.

Example Window

Identification: double glazed uPVC window.
Construction type: single sash, tilt and turn.
Pane: 24mm (4-16-4).
Bolting: 1 top, 2 bottom, 1 hinge side, 3 handle side.
Dimensions: 1395mm x 1575mm.
Area of test specimen: 2.2m².

Window Performance

  Test Results
Australian Standards
min. requirements
Air infiltration 0.2 L/(s m2) at ±75Pa
0.3 L/(s m2) at ±150Pa
Suited for air conditioned and non air conditioned buildings.
max. 1.0 L/(s m2) at ±75Pa
max. 1.6 L/(s m2) at ±150Pa
Water penetration 600 Pa
No water penetration,
classification N6.
min. 450 Pa
No water penetration.
Ultimate strength ± 4500 Pa
no sign of collapse,
classification N6.
± 4500 Pa
for cyclonic regions,
no sign of collapse.
Operating force 6 Nm (newton meter) max. 110 N (newton) to initiate movement
max. 90 N (newton) to sustain movement.
1.1 W/m² K
1.2 W/m² K
63 %
80 %
32 dB
Section of double glazed window

Explanation of the test requirements

Tested are representative sample windows for Class 1 buildings. The test sample shall be closed and locked and supported around the outside perimeter in a manner simulating the typical mounting in the building.

Air infiltration: The air infiltration through the test sample shall be determined for positive and negative (±) test pressures. The value given in table 2.3, AS2047 shall not be exceeded.

Water penetration: Not less than 0.05 L/m²┬Ěs water shall be sprayed uniformly and continuously over the exterior face of the test sample. The test pressure shall be applied and maintained for 15 min with the water sprays still operating. The test pressure is specified in table 2.4, AS2047. During and at the completion of the test there shall have been no penetration of uncontrolled water.

Ultimate strength: Within approximately 1 min the test sample shall be subjected to a smoothly increasing differential pressure up to the test pressure determined in in table 2.5, AS2047, conducted individually in both positive and negative directions. Windows for housing shall not collapse when subjected to the ultimate strength test.

Other properties

Ug-Value: Material-specific heat transfer coefficient of the glass panel only.

Uw-Value: The overall heat transfer coefficient of the intire window.

SHGC: Solar Heat Gain Coefficient. The smaller the number the lower the heat gain (or loss) by energy intensive infrared light.

VLT: Visible Light Transmittance. Describes the amount of visible light that passes through the panes.

STC: Sound Transmission Class specifies the noise reduction in decibel (dB). However, noise reduction varies at different noise frequencies and the STC is more a value for the most commonly occurring noises.

revised 23/Aug/2015