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STANDOUT GLAZING
Bayside's Local Glazier — Window Repairs, Glass Installation & More
Retrofit Double Glazing Melbourne
Upgrade your existing single-glazed windows to double glazing without replacing the frames. Warmer in winter, cooler in summer, quieter year-round. The smart upgrade for Melbourne homes, including heritage properties.
Most Melbourne homes were built with single-glazed windows — fine for the time, but a significant source of heat loss in winter and heat gain in summer. Full window replacement is one option, but retrofit double glazing offers the same thermal and acoustic benefits at a fraction of the cost, because your existing frames stay put.
We replace only the glass, fitting a custom-made insulated glazing unit (IGU) directly into your existing frame. This makes retrofit double glazing particularly well-suited to heritage and period homes in Bayside and Inner South Melbourne, where replacing original timber window frames isn't desirable and costly.
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Existing frames retained
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Low-e glass available
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Heritage & period homes
Benefits of retrofit double glazing
Year-round comfort
A sealed air gap between two glass panes dramatically reduces heat transfer — warmer in winter, cooler in summer.
Lower energy bills
With less reliance on heating and cooling, you'll see meaningful reductions in your energy consumption and costs.
Noise reduction
Double glazing significantly cuts outside noise — ideal for homes near busy roads, flight paths, or train lines.
Heritage home friendly
Your original timber or steel frames are preserved — only the glass is replaced. Ideal for homes in heritage overlays.
Low-e glass options
Add a low-emissivity coating to your IGU for even greater thermal performance — especially effective in Melbourne's climate.
Less disruption, faster install
Because we're not removing window frames, installation is quicker and less invasive than full window replacement.
Frequently Asked Questions
Double-glazing solutions
Is my existing frame suitable for retrofit double glazing?
Most timber, aluminium, and steel frames can accommodate a retrofit IGU, though the rebate depth needs to be sufficient to hold a double-glazed unit. We assess this during our free quote visit and will advise you honestly if a frame isn't suitable.
How much thicker is a double-glazed unit compared to my current single glass?
A standard retrofit IGU is typically 18–24mm thick (two panes of glass with an air or argon gap), compared to 4–6mm for single glazing. In most cases, frames can accommodate this with a slight bead adjustment.
Can I retrofit double glazing in a heritage listed property?
Yes — in most cases. Because the original frames are retained, retrofit double glazing is generally acceptable under heritage overlays. We recommend checking with your local council, and we're happy to assist with documentation.
Is retrofit double glazing worth the cost in Melbourne's climate?
Melbourne's cold winters and hot summers make double glazing genuinely worthwhile. Most homeowners recoup the investment through energy savings within 5–8 years, plus the immediate comfort improvements are significant.