Windows play a vital role in both the aesthetics and energy efficiency of Australian homes. However, they’re often overlooked when it comes to regular maintenance. Whether you’re a homeowner, builder or renovator, keeping window glass in top condition is essential for long-term performance, compliance and curb appeal.
This guide outlines the latest best practices in cleaning and maintaining window glass, reflecting the current standards and trends in the Australian building industry.
Why regular window maintenance matters
Clean and well-maintained windows:
- Enhance natural light and visibility
- Extend the lifespan of glazing and seals
- Improve energy efficiency by maintaining thermal performance
- Prevent long-term damage caused by corrosion, pollution or improper cleaning techniques
With an increasing emphasis on sustainable and energy-efficient construction, window maintenance has become more important than ever.
Recommended cleaning frequency
The environment your home is in plays a big role in how often your windows should be cleaned:
| Environment Type | Cleaning Frequency |
|---|---|
| Standard suburban areas | Every 6 months |
| Coastal or industrial zones | Every 3 months |
| After construction works | Immediately after works are complete |
Safe and effective cleaning methods
When cleaning your windows, always use products and tools that won’t damage the glass or compromise any coatings.
Do:
- Use a soft cloth or sponge: Grit-free microfibre cloths are ideal.
- Mild detergent and water: Mix a small amount of dish soap in warm water.
- Methylated spirits: For stubborn grime, use a few drops diluted with water.
- Clean when cool: Always clean glass in the early morning or evening when the glass is not hot to avoid streaking and cracking.
Don’t:
- Use metal scrapers or razor blades, especially on toughened or coated glass.
- Apply abrasive cleaners, powders or acid-based chemicals.
- Spray water directly into frame edges or seals.
- Clean windows during the heat of the day or when exposed to direct sunlight.
Special considerations for modern glazing
Today’s high-performance windows often include reflective coatings, laminates, or tints. These require more cautious cleaning:
- Consult manufacturer instructions: Some glass coatings can be damaged by ammonia or alcohol-based cleaners.
- Avoid adhesive tapes and harsh labels: These can leave behind residue that is hard to remove without damaging the surface.
If you’re unsure, it’s best to contact the supplier or installer for product-specific care guidelines.
Window maintenance and the NCC 2022
The National Construction Code (NCC) has introduced updated regulations that affect both window performance and maintenance requirements:
- Energy Efficiency: All new residential builds must meet improved glazing performance standards (U-value, SHGC).
- Condensation Management: Improved detailing around window frames is necessary to prevent water ingress and mould.
- Access for Maintenance: Windows installed above 5.5 metres must now include safe cleaning access (e.g., pivot sashes or anchor points).
Builders and renovators should ensure their designs meet these requirements. For homeowners, this means understanding the long-term implications of window placement and access.
Popular renovation trends in 2025
The Australian window market continues to evolve with lifestyle and climate in mind:
- Black aluminium frames remain in high demand for their modern aesthetic.
- Low-E and double glazing are increasingly used in both new builds and retrofits.
- Motorised blinds and smart window treatments are being adopted in energy-conscious homes.
- Sustainable upgrades such as recycled frames or solar-reflective glass are gaining momentum.
Quick maintenance checklist
| Task | Frequency |
|---|---|
| Clean internal/external glass | 3–6 months |
| Inspect seals and weatherproofing | Annually |
| Clean window tracks and hardware | Annually |
| Refinish timber frames | Every 3–5 years |
| Replace damaged glazing | As needed |
Window maintenance is no longer just about keeping the glass clean. In today’s renovation and building environment, it’s about protecting your investment, complying with national standards, and contributing to an energy-efficient and sustainable home.
By following safe cleaning techniques and staying up to date with NCC requirements, you can ensure your windows continue to perform well and look great for years to come.
