Technical Details and Performance
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.
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.
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·s 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.
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.