See the look and finish of M.C.G aluminium windows and doors across a range of homes, inside and out.
Window replacement
Upgrade tired, draughty windows for high-performance aluminium that looks sharp, seals tight and lasts for decades.
Replacing your windows
Replacing old windows is one of the most cost-effective upgrades you can make to an existing home. At M.C.G we manufacture every replacement window to suit your opening, so you get a precise fit, a clean finish and the proven performance our windows are known for, without the guesswork of off-the-shelf sizes. We are Australian owned and operated, with more than 25 years building NATA-tested aluminium windows and doors for Australian conditions.
Choose from our full range of aluminium window styles, glazing options and powder-coat colours to match your home and the way you live. When you are ready, our team can arrange an on-site measure and a clear quote.
Why replace your windows?
Better energy efficiency
Modern double-glazed aluminium and quality seals improve thermal performance, helping keep your home more comfortable year round and reducing how hard your heating and cooling has to work.
Less draught and noise
Tight, well-engineered seals cut draughts and dampen outside noise, so rooms feel calmer and warmer without the cold spots and rattles of old timber or worn frames.
Low-maintenance aluminium
Powder-coated aluminium frames will not warp, swell or need repainting like timber. A wipe down is usually all they need, which keeps them looking sharp for decades.
Made-to-measure fit
Every window is built to order locally to suit your exact opening, so you get a precise fit and a tidy finish rather than compromising on a standard size.
Our replacement process
1. On-site measure and quote
We visit your home, measure each opening accurately and give you a clear, no-obligation quote with your chosen styles, glazing and colours.
2. Made to order locally
Your windows are manufactured to suit your exact openings using NATA-tested aluminium systems engineered for Australian conditions.
3. Professional installation
Our team removes the old windows and installs the new ones with a tidy, careful finish that respects your home.
Old windows vs new M.C.G aluminium
| Old or tired windows | New M.C.G aluminium |
|---|---|
| Draughts and worn or failing seals | Quality seals that cut draughts and noise |
| Single glazing with poor thermal performance | Double-glazing options for better thermal performance |
| Timber frames that warp, swell and need repainting | Low-maintenance powder-coated aluminium frames |
| Off-the-shelf or compromised fit | Made to measure for your exact opening |
| Limited colour and style choice | Full range of colours, glazing and configurations |
Window replacement FAQs
Do you replace the whole window?
Yes. We manufacture a complete replacement window to suit your opening, then remove the old unit and install the new one. Because each window is made to measure, you get a precise fit and a clean finish rather than patching over worn or failing frames.
Will new windows cut my energy bills?
Modern double-glazed aluminium improves thermal performance, which helps keep rooms more comfortable and reduces how hard your heating and cooling work. Independent performance ratings explain how this is measured, which you can read about in our WERS window energy ratings guide.
Do you handle installation?
Yes, we handle installation. Our team removes your old windows and fits the new ones with a tidy, careful finish. We manufacture every window locally to order, so the same team that builds your windows looks after getting them installed correctly.
How long does a replacement take?
The timeframe depends on how many windows you are replacing and the configurations you choose, since each one is made to order locally. We will give you a clear indication at the time of your on-site measure and quote.
Can I match my existing colour scheme?
Yes. You can choose from our full range of powder-coat colours to match or complement your home. Browse the options on our colour chart, or speak with our team about the right finish for your replacement windows.





