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) 9022 6418 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) 9022 6418 for an exact number.
Need an exact price for your job?
Most quotes ready within 24 hours of the site visit. No-obligation, free, written.
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.
Holding two or three quotes that describe the job differently? Our guide to comparing double glazing quotes line by line shows how to put them on one opening schedule. If you plan to do the house in parts, see replacing windows in stages without a mismatch.
How to get an accurate quote in 5 minutes
Have the following ready when you call (03) 9022 6418 (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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