Secondary Glazing Cost in Melbourne (2026)
Melbourne buys secondary glazing to take the edge off a cold, draughty winter without tearing the original sashes out of a period home.
Your secondary glazing details
Your estimate sits within the typical range.
Your estimate sits within the typical range.
For noise, a larger air gap between the original and secondary pane matters more than for thermal insulation, which is why acoustic secondary glazing uses a wider cavity. It is very effective against traffic and aircraft noise.
Magnetic or removable acrylic secondary panels are the cheapest and are DIY-friendly, good for renters or a budget. Fixed or sliding glass panels look better and perform best but cost more.
Secondary glazing keeps your existing windows and adds an internal pane, ideal for heritage homes and renters who cannot replace windows. It is especially effective for noise, often more than double glazing for sound.
Ways to save
- Magnetic or acrylic secondary panels are a cheap, renter-friendly, often DIY option.
- Treat the noisiest or coldest windows first if budget is limited.
- For heritage homes, secondary glazing keeps the original windows intact while improving comfort.
How we estimate this
Secondary glazing in Australia typically costs around $400 to $800 per window in 2026 for fixed or sliding glass panels, less for magnetic or acrylic panels. A whole house of 8 to 12 windows often runs $4,000 to $12,000.
Pricing reviewed: October 2026.
What a secondary glazing costs in Melbourne
A second pane fitted inside the existing window traps a layer of still air, and in Melbourne's cold, wet winters and wide daily temperature swing that layer is what stops heat leaking out through single-glazed glass. The appeal over full double glazing is that the Victorian or Edwardian sash stays exactly where it is, which matters in a period suburb where the windows are part of the character and often cannot be replaced. Cost is reckoned per window on the size, the glass and the frame, so a bay window of tall panes is the dearest item in any Melbourne quote.
The city's enormous stock of 1900s terraces, Californian bungalows and double-brick homes is the natural market, because those draughty timber sashes are exactly where secondary glazing pays back fastest in a Melbourne winter. Labour sits just below Sydney's in a deep, competitive trade market, so a well-shopped install lands at a fair price. Condensation on the inside of cold single glazing is a common winter complaint here, and the warmer inner pane reduces it.
Fitting the panel is a glazier's or secondary-glazing specialist's job, not a licensed building trade, so no building licence applies while the original opening is untouched, and the work sits outside the Victorian Building Authority's remit for structural building; a licensed builder is only needed if the reveal is altered. Heritage-overlay homes keep their approved external appearance because nothing changes outside. Price a Melbourne job by the window, the glass spec and the pane count.
Compare against the national picture: Secondary Glazing Cost in Australia →
Secondary Glazing Cost in other cities
Frequently asked questions
Do I need a licence for secondary glazing in Melbourne?
No. It is fitted by a glazier or secondary-glazing specialist rather than a licensed building trade, and because the existing window is not structurally altered it falls outside the Victorian Building Authority's building-work remit. A licensed builder is only needed if the opening itself is changed.
Is secondary glazing worth it in a Melbourne winter?
For a draughty period home, yes. The trapped air layer behind the second pane slows the heat loss through single glazing during Melbourne's cold, wet winters, cuts draughts, and reduces the condensation that forms on cold single glass.
Can I keep my Victorian or Edwardian windows?
Yes, and that is the usual reason Melbourne owners choose it over replacement. The second pane sits inside, the original timber sash is untouched, so a period or heritage-overlay home keeps its windows and external appearance.
How is a Melbourne secondary-glazing job priced?
Per window, on the pane size, the glass thickness and the frame, with larger bay and feature windows costing most. Melbourne's deep, competitive trade market means a well-shopped install sits just below equivalent Sydney pricing.