Is it worth replacing aluminium windows with uPVC?
It can be, especially when the existing windows are draughty, difficult to operate, poorly insulated or no longer meeting your needs for noise control and comfort. Replacing old aluminium windows with a modern uPVC double-glazed system changes more than the glass: it can improve sealing, thermal performance, security and everyday functionality at the same time.
When should you consider replacement?
Not every aluminium window needs to be replaced simply because it is aluminium. The decision should start with the problems you are experiencing.
- Cold areas or noticeable draughts around the windows.
- Street or traffic noise entering the home.
- Frames or hardware that are difficult to open and close.
- Condensation or discomfort around window areas.
- A renovation where better energy performance is a priority.
- Security concerns or outdated locking.
What changes when you move to uPVC double glazing?
Better insulation through the complete system
uPVC is a low-conductivity framing material, and modern systems use multi-chamber profile construction. Combined with insulated double glazing and good seals, this can reduce unwanted heat transfer compared with many older window systems.
EnviroGlaze (Euro UPVC Windows) manufactures its windows locally using Kömmerling profile systems. Its current range includes Insulglass LowE Plus glazing supplied by Australian Glass Group, with other glass options available for different requirements.
A tighter seal can improve comfort and noise control
A major difference is often how the new window closes. Modern hardware can pull the sash firmly against the seals at several points. EnviroGlaze works with Siegware hardware and uses multiple locking mechanisms in relevant windows and doors.
You can change performance without making the home look completely different
Replacement does not automatically mean turning an established home into a highly modern-looking property. Colour, opening style, proportions and custom sizes can all be considered so the new windows feel appropriate for the architecture.
A Cheltenham example
For one Cheltenham home, the previous concern was improving insulation and everyday comfort without losing the character of the property. EnviroGlaze installed custom uPVC double-glazed awning windows and carefully retained and reinstalled the existing plantation shutters.
That project is a useful example of the difference between a simple “window swap” and a considered replacement. The solution needs to work with the way the home already looks and functions.
What about doors and unusual openings?
Replacement projects can also include doors and custom shapes. Another Cheltenham project involved replacing old aluminium windows and adding a custom-shaped uPVC front door, including a built-in doggie door. This type of project shows why measurements, configuration and hardware need to be planned around real family use rather than a standard catalogue size.
Frequently asked questions
Can uPVC windows be installed into an existing home?
Yes. Retrofit and replacement work is a major use case for uPVC windows. The existing openings need to be measured and assessed before manufacturing.
Do I have to replace every window at once?
Not necessarily. The practical approach depends on the home, budget and project plan. Some homeowners complete replacement in stages.
Can existing blinds or shutters be kept?
Sometimes. It depends on the existing setup and the new frame dimensions. In the Cheltenham project above, plantation shutters were retained and reinstalled.
Will uPVC suit an older house?
It can. The key is choosing appropriate colours, proportions, opening styles and details rather than treating every home the same way.
Thinking about replacing old aluminium windows?
Send EnviroGlaze (Euro UPVC Windows) photos of your current windows and tell the team what you want to improve: insulation, noise, security, appearance or functionality. This gives the team a much better starting point for recommending the right replacement solution.