Window compliance starts before ordering

Window compliance relies on correct product selection and installation. Confirming glazing, safety features and drainage details before ordering helps prevent safety risks, water damage and costly rectification.

Before approving the window schedule, review the project’s applicable NCC requirements with the designer and supplier, including:

• Glass type and location: Confirm the required glass type, thickness and safety grade for each opening. Doors, sidelights, low-level windows and glazing in kitchens, bathrooms and ensuites require particular attention. Specify suitable toughened or laminated safety glass where required; double glazing or obscured glass alone does not establish safety compliance.
• Fall protection: Consider internal sill heights, the height above the surface outside and room use. Confirm whether opening restrictors, compliant screens or barriers are required before selecting the window configuration.
• Performance requirements: Confirm suitability for the site’s wind loads, water penetration resistance and bushfire exposure where applicable. Match the complete window’s U-value and solar heat gain coefficient to the approved energy assessment.

These checks also apply to imported windows, which must meet the same applicable Australian requirements as locally manufactured products. A sticker claiming glazing compliance does not, by itself, demonstrate compliance of the complete window assembly. Obtain verifiable testing and compliance documentation covering the actual system, sizes and configurations being supplied, including evidence relevant to AS 2047 and AS 1288. Overseas certification should not be assumed to demonstrate Australian compliance.

Drainage details need the same attention before ordering. Ask the supplier to show where the frame’s drainage holes discharge and how the window, subsill or sill flashing, wall membrane and external cladding will work together to carry water outside.

Downward-facing drainage holes require a compatible installation detail that collects and directs water to the exterior. Water should not discharge uncontrolled into the cavity or onto framing, insulation or internal finishes. The presence of drainage holes alone does not establish a suitable installation.

During installation, check flashing continuity, required subsill end dams and drainage clearances. Keep outlets clear of sealant, mortar, render and cladding. Retain the compliance documentation and photograph flashing and drainage details before they are concealed.

If you’d like support reviewing your processes, please reach out to the MBA ACT team.

📞 (02) 6175 5900
📧 workplace@mba.org.au