retroGLAZE® Window Upgrade Advisor

What do you want to Achieve?

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Your goals help us recommend the right glass type and approach. Thermal goals (heating/cooling) are typically easier and more cost-effective to achieve than other improvements.

Select all that apply - this helps us with glass recommendations:

Comfort & Temperature Control

Health & Peace of Mind

Property Value & Maintenance

Your Budget

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Your budget can influence which solutions are most suitable. Retrofit glazing often costs around 30–50% less than full replacement. If you’re unsure, we can suggest options for a range of budgets.

What's your approximate budget range?

When do you want this done?

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Timeline affects planning and pricing. Urgent projects may have limited options or require premium scheduling. Most window projects benefit from proper planning time.

When are you looking to complete this project?

How many Windows need Attention

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Window count affects pricing, project complexity, and installation time. An approximate number is fine — an installer can confirm exact measurements during a site visit.

Approximately how many windows need attention?

Your Current Window Frame Materials

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Material type is crucial for determining retrofit feasibility. Timber and aluminium have different retrofit considerations. If you're unsure, we can assess this during a site visit.

What are your current window frames made of?

Timber Age

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Older timber requires more careful assessment. Very old timber may need restoration first, while newer timber is generally easier to retrofit. Age can also affect which glazing systems are suitable.

How old is your timber joinery?

Timber Condition

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Physical condition is critical for retrofit success. Poor condition timber may need repairs first, which adds cost. Look for rot, warping, loose joints, or paint that's peeling badly.

What's the overall condition of your timber joinery?

Timber Hardware Condition

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Hardware includes handles, locks, hinges, stays, and latches. If hardware is failing, it may need replacement during retrofit, which affects costs. Seized or broken hardware may suggest deeper maintenance needs.

How is the hardware (handles, locks, hinges, stays)?

Timber Function

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If you want to change how your windows open (e.g., from sliding sash to casement), this is usually possible with retrofit. Some door style changes, however, may require full replacement. Keeping the same opening style is usually more cost-effective.

How do your windows and/or doors currently open, and what do you want?

Aluminium Age

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Aluminium technology has improved over time. Newer systems with thermal breaks are often more suitable for retrofitting. Very old aluminium may lack the features needed for effective retrofit glazing.

How old is your aluminium joinery?

Aluminium Condition

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Look for corrosion (white powdery deposits), pitting, or damage. Aluminium near the sea deteriorates faster. Minor surface wear is normal, but structural damage or severe corrosion may require replacement.

What's the condition of your aluminium joinery?

Aluminium Hardware Condition

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Aluminium hardware is generally more durable than timber hardware, but when it fails it can be expensive to replace. Check if handles operate smoothly and locks engage properly.

How is the hardware condition (handles, locks, hinges, stays)?

Aluminium Function

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If you want to change how your windows open (e.g., from sliding sash to casement), this is usually possible with retrofit. Some door style changes, however, may require full replacement. Keeping the same opening style is usually more cost-effective.

How do your windows and/or doors currently open, and what do you want?

Get Your Detailed Report

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We'll email you a comprehensive report with detailed analysis, charts, and recommendations. We may also follow up to discuss your window upgrade options.