Pre-installation care for windows

Windows are a major investment in any residential project, whether you’re building new or renovating. Before installation even begins, how windows are stored, handled and protected can significantly impact their long-term performance, appearance and compliance with Australian standards.

This article outlines the best practices for pre-installation window care based on the latest guidance from industry bodies, manufacturers and the National Construction Code (NCC).

Store and handle windows correctly

Proper storage and handling help prevent distortion, surface damage, and costly installation issues later on. Here’s how to do it right:

• Keep windows upright: Always store frames standing upright on timber blocks or bricks, never directly on the ground.
• Choose a flat, stable surface: Place frames against a vertical wall or solid structure and secure them to prevent tipping.
• Avoid uneven or soft ground: Never lean frames against trees, fence posts or uneven surfaces where they could bow or warp.
• Lay flat only with support: If vertical storage isn’t possible, lay frames flat with even support to distribute weight evenly and avoid damage.

Protect windows from damage on site

Construction sites are full of hazards to window frames and glass. Prevent unnecessary damage by taking these steps:

• Cover and protect: Store windows under cover away from exposure to cement, lime, dust or water runoff.
• Avoid moisture: Don’t allow frames to sit in puddles or be splashed by nearby trades.
• Clean contaminants quickly: If mortar, plaster, acids or paint splashes occur, rinse the surface immediately with clean water to prevent permanent damage or staining.
• Avoid UV damage: Keep protective films on coated or coloured windows intact until after installation where recommended by the manufacturer.

Maintain frame integrity

Windows must be kept square and intact before installation to ensure they perform correctly once in place. Avoid these common mistakes:

• Don’t twist or distort frames: Carry frames vertically and with care, especially large or complex units.
• Leave shipping restraints in place: Some sash windows are delivered with braces or bands that should not be removed until after installation.
• Don’t place weight on frames: Never lean ladders, scaffolding or heavy tools on windows, as this can bend the frame or damage seals.

Plan around compliance and installation standards

All window installations in Australia must meet specific performance and safety requirements outlined in AS 2047 and AS 1288, and must align with NCC 2022 (Amendment 1).

• Glazing must be certified: All windows must carry performance labels showing compliance with structural and energy requirements.
• Safety glass is mandatory: For areas like bathrooms, stairwells and low-level glazing, safety glass is required under AS 1288.
• Installation must follow manufacturer instructions: This includes correct flashing, drainage allowance, sealant use and fixing methods to avoid failures and warranty voids.

Reduce risks and project delays

By managing pre-installation care properly, builders and homeowners can reduce costs, avoid replacement delays and preserve warranties.

• Respond to damage fast: Remove contaminants like cement or lime immediately to avoid corrosion or staining.
• Protect visible components: Use drop sheets or padding over window sills and tracks when working above them.
• Secure frames in windy conditions: On open sites, tie frames securely to prevent toppling, but ensure ropes or fastenings do not damage powder coatings or finishes.

Proper window care doesn’t start at installation, it starts the moment the windows arrive on site. Pre-installation damage is common, often preventable and can cost thousands to rectify. Storing windows upright, keeping them protected from the elements, and following Australian Standards ensures that your windows will perform as expected when installed.

For builders, this protects project timelines and quality standards. For homeowners, it means your investment in windows will deliver the energy efficiency, performance, and aesthetics you expect.

Quick checklist