Types of Double Glazing Frames

When looking on the market to install brand new windows in your home, you may think you just need a standard double glazed window, but then as you research more, you start to learn about Sliding Sash, Tilt and Turn and other types of frames.

You may be faced with options such as aluminium or uPVC. The whole process can become quite overwhelming.

Which is why we wanted to provide some clarity on the different types of double glazing frames so that you can easily purchase the frame and material you need.

Which frame should you get?

When it comes to choosing a frame, it really depends on the type of home you have. 

Do you have a modern home that has a lot of natural light? Or do you have a cosy traditional British cottage? Both are completely different types of homes, so it’s best to blend in with your home, rather than have something that sticks out!

And whilst our frames cater for both, it’s good to have an idea of what you want before making the big purchase.

Let’s take a look at the different frames and what their benefits are.


Perhaps the most popular window frame on this list, the casement window offers the ability to open both panels for maximum space possible and to allow a lot of natural light into the home.

It’s a great choice for any home, but because of how wide the windows open, families with younger children may shy away from this style in fear of putting their children at risk.

Nevertheless, they’re still a popular window that has many benefits such as letting as much natural light in as possible whilst still maintaining privacy within the home.

French casement

Whereas a casement window has the small windows at the top, a french casement does not and in turn, allows for enhanced views and natural light into the home.

With the central mullion mimicking a french door, the french casement window allows wonderful unrestricted views that are the best choice for homeowners who want a window that can enhance their living space.

Most commonly found in apartments and upper-level flats to increase the perception of space and allow more light into the flat or apartment.

Sliding sash

Perhaps more suited for the traditional home as opposed to the modern, a sliding sash window offers a classic look and feel. 

A sliding sash does what the name suggests, the window slides up to open rather than opening outwards. 

For homeowners who live in an apartment building with little and tight spaces, this is a fantastic option as it allows for all the benefits of allowing as much air and natural light into the property but without having to sacrifice space.

Sash horn

Another variation on the sash style windows, the sash horn has two small horns on either side of the frame which resemble timber wood windows to create a traditional appeal.

For those with traditional homes, the sash horn is a great option as it gives you all the benefits of a modern window (including uPVC) but with the traditional look.

Whilst it may have a classic appeal, the sash horn is versatile and would suit both modern and traditional homes.

Tilt and turn

Tilt and turn windows offer both functional and modern benefits with the ability to open the window inwards, creating more space in houses or properties that don’t have much room on the exterior.

They are very easy to use and with the stylish, contemporary feel they are beautifully designed to be installed in modern homes.

The sleek design offers enhanced views whilst allowing for maximum natural light into the home.

What’s the difference between aluminium and uPVC windows?

The most common materials for window frames to be manufactured from are aluminium and uPVC. Of course, there are a lot more materials on the market, but being the most popular two, we thought we’d mention their benefits so that when it comes to deciding the material for your frames, you have a good understanding which one you want.

Aluminium windows

The stronger of the two and perhaps the most versatile. Not only are they durable enough to withstand extreme weather conditions, but they’re also durable enough to hold the glass in place due to their strength, why is this important? If you want a more contemporary, sleek design with thin frames which allows more light into the home, aluminium might just edge it over uPVC windows.

And with more design options to choose from in terms of colours, you don’t have to stick with the traditional white of uPVC windows, you can select a single or even dual colours.

Finally, they’re environmentally friendly, so not only will they last up to 20 years, they are recyclable and only use a small amount of energy when creating the initial metal.

uPVC windows

Probably the cheaper of the two, however, because they’re cheaper does not mean you’re getting a cheaper frame.

uPVC windows are cheaper because they’re more common than aluminium windows and are arguably the standard for any home across the U.K.

They are naturally warm and within the frames themselves, most manufacturers include multi-chambered insulation pockets to retain heat in the window for longer. And in that sense, can help reduce energy bills in the Winter.

Finally, uPVC frames are easy to maintain and clean as well as being long-lasting, similar to aluminium windows, they can generally last up to 20 years.

Ready to install your new windows?

Walkern Windows and Homes have over 25 years experience installing windows and doors throughout Hertfordshire and are CERTASS approved, so you’re in safe hands.

We have a wide selection of both aluminium and uPVC windows with an array of frames to choose from. If there’s a style on this list you’re interested in having in your home, get in touch with us and we’ll be able to install your new windows for you. Alternatively, why not design your own windows through our QuoteBuilder tool which allows you to see a real-time visual representation of your window and door products. Once you’re happy with the design, we’ll be in touch to come and fit your new window and door products.