Double glazing prices in South East Melbourne - 2026 retrofit + replacement guide
Double glazing in South East Melbourne cuts thermal loss through windows by 50-60% and noise transmission by 30%. The two ways to get it: replacement (new double-glazed window units, $1,500-$3,800 per opening) or retrofit (secondary glazing on existing frames, $580-$1,200 per opening). Retrofit is 60% the cost with 80% the thermal benefit.
Below are realistic 2026 ranges. Quotes are per-opening. Call (03) 9003 0108 for a measure-quote.
Typical 2026 prices for double glazing in South East Melbourne
Real ranges from our books, not made-up averages. Every quote we issue is itemised against the work below.
| Service | Typical range (AU 2026) | What's included |
|---|---|---|
| Retrofit secondary glazing - small window | $580 - $880 | Magnetic-fix to existing frame. Reversible. |
| Retrofit secondary glazing - medium | $880 - $1,400 | |
| Retrofit secondary glazing - large | $1,400 - $2,400 | |
| Full replacement - double-glazed aluminium (small) | $880 - $1,500 | New IGU + new frame. |
| Full replacement - double-glazed aluminium (medium) | $1,500 - $2,400 | |
| Full replacement - double-glazed aluminium (large) | $2,400 - $3,800 | |
| Full replacement - UPVC double-glazed (small) | $1,200 - $1,800 | Best thermal performance per dollar. |
| Full replacement - UPVC double-glazed (medium) | $1,800 - $2,800 | |
| Full replacement - UPVC double-glazed (large) | $2,800 - $4,200 | |
| Full replacement - timber double-glazed (heritage) | $1,800 - $3,800 | Period-correct heritage homes. |
| Acoustic glazing upgrade | +$280 - $580 per window | Laminated + thicker outer pane. |
| Low-E coating upgrade | +$120 - $280 per window | Solar control + thermal. |
| Argon-fill upgrade | +$80 - $180 per window | 20% improvement in insulation value. |
| Energy rating + BASIX compliance report | $280 - $580 | For council compliance. |
| Free measure + quote | Free | On-site visit. |
Prices indicative for South East Melbourne in 2026. Final quote depends on your site - call (03) 9003 0108 for an exact number.
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What changes the price on your job
The ranges above are the starting point. These five factors are what move a quote up or down within (or sometimes outside) those bands.
- Retrofit vs replacement - retrofit 60% cost, 80% benefit, reversible.
- Frame material - UPVC > timber > aluminium for thermal performance.
- Coating - Low-E adds 15-25% efficiency improvement.
- Gas fill - argon adds 20% improvement; krypton premium.
- Volume - 10+ windows gets 15-25% discount per window.
Red flags - what to watch for in quotes
We see these patterns every week from operators we'd never recommend. If a quote you've received contains one of these, ask before signing.
- 'Free double glazing' programs - usually a high-pressure sales funnel.
- Quotes without IGU spec - get the U-value + SHGC numbers.
- Cheap-end aluminium without thermal break - wastes the thermal benefit of the IGU.
- Retrofit quotes that don't include the magnet/seal details - leaky retrofit is no better than single.
- No condensation guarantee - quality DG should eliminate condensation in 95% of cases.
How to get an accurate quote in 5 minutes
Have the following ready when you call (03) 9003 0108 (or jot it on the quote form) and we can give you a real number in one call, not five.
- Number of windows + approximate sizes.
- Retrofit or replacement preference.
- Goal - noise / thermal / condensation.
- Existing frame material (aluminium / timber).
- Heritage / planning restrictions.
Frequently asked questions
Retrofit or full replacement?
Will it stop condensation?
How much will bills drop?
Noise reduction - how much?
Will it look different?
Heritage homes - allowed?
Warranty?
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