High-performance testing of windows for weathertightness developed by BRANZ should give the industry confidence in the weathertightness of window to wall joints.
BRANZ is investigating different installation techniques for thermally efficient and weathertight aluminium windows and is keen to hear about any new industry solutions.
Complying with the new requirements of clause h1 (the rules for thermal performance in housing in the New Zealand Building Code) for windows follows the previous process implemented in 2022 and 2023, but the insulation values are higher.
Summer overheating is becoming a problem in many of our houses. Designers should consider the solar heat gain coefficient when selecting glazing to help reduce this risk.
