How much does secondary glazing cost in Australia?
Quick answer: A made-to-measure DIY magnetic acrylic kit costs $161 for a 640 × 940mm window and $250 for a 940 × 1240mm window (inc GST, before delivery). Having secondary glazing fitted by a glazier in Melbourne typically runs $400–$1,200 a window, and replacing windows with double glazing costs $150–$1,500 per m² installed.
Price by window size
| Window (panel size) | DIY magnetic kit | Weight | Fitted secondary glazing* |
|---|---|---|---|
| 640 × 940mm | $161 (3mm) | 2.1 kg | $400–$700 |
| 940 × 1240mm | $250 (3mm) | 4.2 kg | $550–$900 |
| 1240 × 1540mm | $422 (4mm) | 9.1 kg | $700–$1,200 |
Kit prices come straight from our online calculator and change with it. *Fitted range: typical Melbourne prices for professionally installed secondary glazing (Home Upkeep, 2026).
What sets the price
Our kits are priced from $139/m² for 3mm clear cast acrylic ($169/m² for 4mm, $159/m² for 3mm frosted), plus a per-panel charge and the magnetic tape and steel strip, which are priced by the metre of edge. Every panel is cut to your sizes.
Delivery is extra and depends on panel size and postcode, from about $20 in metro Melbourne. Several windows go in one flat parcel, so the cost per window drops as you add more.
Secondary glazing vs double glazing
| Option | Typical cost | Notes |
|---|---|---|
| DIY magnetic secondary glazing | $161–$422 a window | No drilling, removable, you fit it |
| Secondary glazing, professionally fitted | about $400 per m² | Airtasker cost guide (2024) |
| Double glazed windows, aluminium frame | $150–$1,250 per m² | Airtasker cost guide (2024) |
| Double glazed windows, timber frame | $800–$1,500 per m² | Airtasker cost guide (2024) |
Factory double glazing performs a little better and you never have to lift a panel off, but it costs several times more and usually means a glazier, a builder or the landlord. Secondary glazing gets you most of the way for much less. See how much warmer it makes a room.
Questions
How much does secondary glazing cost per window in Australia?
A DIY magnetic acrylic kit is $161 for a 640 × 940mm window and $250 for 940 × 1240mm. Professionally fitted secondary glazing in Melbourne is typically $400–$1,200 a window.
Is secondary glazing cheaper than double glazing?
Yes, by a wide margin. Airtasker's guide puts secondary glazing at about $400 per m² fitted and double glazed windows at $150–$1,500 per m² depending on frame. A DIY kit costs less again.
Does the price include delivery?
No. Delivery depends on panel size and postcode, from about $20 in metro Melbourne. We email the delivery cost before you pay.
Why is frosted acrylic dearer?
Frosted sheet costs more to buy. Our 3mm frosted rate is $159/m² against $139/m² for clear.
Is there a minimum order?
The smallest kit is $120. There is no minimum number of windows.