uPVC Double Glazed Bay Windows

All of our bay window uPVC profiles are high quality german designed by Aluplast and manufactured locally in Moorabin, Melbourne. We use uPVC double glazing which provides many benefits over timber and aluminium. With Winplex you can select your own colour for the inside and outside to transform your home

Key Points

German Manufactured Frames and Hardware by Roto

Adds a beautiful touch to your home’s exterior

Versatile aesthetics that can match the style of your home

Wider views due to angled sides

Low maintenance

Flyscreens are standard and already fitted

Bay Windows Melbourne

bay windows, casement windows

Amazing Windows Quality

We have just had Winplex windows installed, the quality of these windows is amazing. We have already noticed the difference is the temperature on a warm day, so much cooler .The workers were a pleasure to have, they work very well together as a team , very polite and very helpful. We have had so many people comment on them. We are very happy, thanks to Phoenix and his team.

– Marianne

bay windows, casement windows

Amazing price for Windows

Just had my new windows installed through Winplex and couldn’t be any happier! From getting the quote to instalment the service has been amazing! Amazing price compared to other quotes I had received and well in our price range. Constant check ins and following up was on point. Our new windows and doors look phenomenal and I’m over the moon! Highly recommend Winplex to anybody who is looking at getting double glazed Windows.

– John

bay windows, casement windows

Loving my new windows

I’m loving my new Winplex windows. I got them installed just in time for that super hot day yesterday – even though it was 44 degrees outside, I barely used my A/C all day! They look great, and the built in fly screens mean that I can have the doors and windows open without letting in any insects. The Winplex team kept in contact from ordering, through installation and then followed up with me afterwards. I couldn’t be happier.

– Linda


Bay Windows?

Winplex Double Glazing installs across Melbourne and Mornington Peninsula to your specific requirements
bay windows, casement windows


They are versatile in terms of size, shape, placement, and style. You can match it with the aesthetics of your house.

bay windows, casement windows

Views and Sunlight

Bay windows provide better views due to its width and angled side window panels. This also allows more sunlight to brighten your home.

bay windows, casement windows

Easy Maintenance

Easy to clean and maintain due to its minimalist parts that don’t need much upkeep. The German-manufactured Roto frames and hardware also makes it durable.

Why uPVC Double Glazing?

bay windows, casement windows


Keep your home warmer in winters and cooler in summer.

bay windows, casement windows


Toughened / laminate up to 8mm which is unbreakable

bay windows, casement windows


Sound proof your home with up to 90% noise reduction.

Bay Windows vs Fixed Windows

bay windows, casement windows
bay windows, casement windows

Fixed windows are not as versatile as bay windows. For one, fixed windows cannot be opened to allow airflow, whereas bay windows can be opened from the side windows.

Bay windows also add character to your home’s facade as they tend to project outward from the exterior walls of your house.

Bay Windows vs Casement Windows

bay windows, casement windows
bay windows, casement windows

Casement windows are actually commonly used for the side panes of bay windows. Think of bay windows as a hybrid of fixed windows and casement windows.

Bay windows provide more versatility than casement windows because you can leave the center window fixed. This provides better security and durability to your home.

Personal service, quality product and competitive prices

Window Sizes

If you’re not sure which window size to get, check out what each size offers below.


Perfect for attics and small bedrooms


Great for kitchens and master bedrooms.


Best for larger spaces where you want more sunlight, such as the living room, home office, and dining room.

Why Winplex?

bay windows, casement windows


Highly responsive to your needs at all times.

bay windows, casement windows


Established, German Engineered Products.

bay windows, casement windows


You won’t find better value for money.

bay windows, casement windows


Our experts will guides you through every step.

bay windows, casement windows


Locally manufactured, AU owned & operated.

bay windows, casement windows


As seen on Channel 10’s Healthy Homes.

Grilles and Colonial Bars for Bay Windows

We offer multiple Grille and Colonial Bar options for bay windows:

1. Grilles: Winplex’s grilles allows you to enjoy the beauty of finely crafted multi-pane windows without the expense or upkeep.

2.Colonial Bars: They are also known as glazing bars, sash bars, dividing lites or grid. These bars are installed between two panes of glass. This gives you a grid aesthetic while making casement windows easier to clean.


bay windows, casement windows
bay windows, casement windows
bay windows, casement windows
bay windows, casement windows
bay windows, casement windows
bay windows, casement windows
bay windows, casement windows
bay windows, casement windows


How can bay windows provide security?

They provide better safety and security compared to other window types due to the fact that the centre window cannot be opened and the side windows can be opened only partially like a casement window.

Can bay windows bring in more natural light?

Yes they generally bring in more sunlight due its naturally tall and wide design, especially if you choose a large size.

Do bay windows need a lot of maintenance?

The great thing about bay windows is that they are very easy to clean, even with grilles and louvers. The simplicity and minimalist design of bay windows also reduce the risk of failing or breaking parts.

Are bay windows versatile in terms of design?

Yes they are versatile as you can customize them to any shape, size and style. You can even install them in the corners of your home, known as corner windows.