Aluminium Casement Windows

The simplest of all window designs, aluminium casement windows by Alteza comprise a fixed, glazed frame and a second side-hinged frame, or ‘casement’. The open-out aluminium casement windows are available in a variety of formats – Side Hung with hinges on the side for easy opening, and Top Hung with hinges at the top, ideal for wet weather conditions as these casement windows keep the rain out. Our high-quality casement windows are great for ventilating rooms, but as they can open wide, large casement windows with a metal grill are recommended for homes with babies, growing children and pets. Whatever your project, the style of aluminium casement windows you choose will make a big impact on the overall appearance of the building. To meet your need for different shapes, sizes and glazing options, Alteza can offer an exclusive customisation service to fulfil these individual requirements that no one else can. We are one of the leading casement window manufacturers of the country.


Window Styles

Explore our range of aluminium window styles, including the versatile casement window type, known for its classic design and functionality. With options for customisation in size, colour and hardware, find the perfect fit for your space with Alteza.

window styles Casement Windows

Casement Windows

Doors that
are made for you

Each residence is unique, and that's how it should be to match the preferences and needs of its inhabitants. Alteza's cutting-edge aluminium window systems are tailored to individual projects, crafted with precision to ensure superior aesthetics and performance. Experience the freedom to customise your windows with Alteza.





Size & Color

10 Year Warranty

12 Years of Fabrication Experience

World-Class Technology

Highly Customizable

Wide Range


Which is better: casement or sliding windows?

Here are some factors to consider when choosing between casement and sliding windows:

Climate: Casement windows are the best option in a hot climate as they offer better ventilation. Sliding windows may be a better choice as they are easier to seal tightly against drafts in a cold climate.

Security: Casement windows are generally considered to be more secure than sliding windows, as they have multiple locking points.

Maintenance: Casement windows require more maintenance than sliding windows, as the moving parts need to be cleaned and lubricated regularly.

Do casement windows swing in or out?

Casement windows can swing in or out, depending on the type of window. Most casement windows swing out, but some manufacturers also offer inswing casement windows. Outswing casement windows are the most common type of casement window. They have hinges on one side and open outward like a door. Inswing casement windows have hinges on the other side and open inward like a traditional window. Inswing casement windows are less common than outswing casement windows.

How secure are casement windows?

Casement windows are one of the most secure types of windows available in the market offering a number features such as multiple locking points, strong frame, concealed hardware, security glass and window alarms that make them difficult to break into.