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Aluminium Casement Windows

The clean style and light, modern material used in our aluminium casement windows lend a contemporary note to any age of property. We use strong, polyester powder-coated frames for a long-lasting finish that won’t corrode and will configure them any way you choose. With more than 200 colours and a selection of decorative glass, fixtures and glazing options, your windows will be truly bespoke.

Each aluminium casement window is individually made with your choice of colour, configuration and glass.

  • Low maintenance, sleek and modern look
  • Powder-coated for extra durability
  • Choose from over 200 colours
  • Energy efficient – can help reduce your heating bills
  • Secure – shoot-bolt locks, key locking handles and toughened glass

Our stylish aluminium casement window frames are guaranteed for 10 years and the sealed units are guaranteed for 15 years. They exceed building regulations, with a B energy-efficiency rating as standard.

As well as being secure and energy efficient they are effective at noise reduction - our aluminium windows are very good at cutting down sounds from outside.

With over 200 colours for you to choose from, we’re sure to have a colour that suits your home perfectly. You can even have different coloured frames and casements with our aluminium window range, as well as different colours inside and out.

We make it easy to find the cost and energy savings you’re looking for – one of our Anglian designers will visit you at home to give expert advice based on your particular needs. They’ll also guide you through deciding the best configuration for each room and which decorative bars and glass designs to add to make your windows unique.

Once you’ve decided what you want, they can give you an accurate quote. Your aluminium windows will always be made to your exact specifications, ensuring that they fit perfectly to your home.

up to 50% off windows up to 50% off windows
  • 10 year guarantee
  • Established in 1966
  • Made in Britain

Explore our range of frame and glass options

Frame options
Anthracite Grey aluminium casement window
All dual colours are white on inside

See how your aluminium casement windows could look by selecting the colour and handles of your choice

Outside View
Select frame colour:
Each window material offers a wide choice of colours for the outside of the frames. With our uPVC windows, you also have a dual colour option combining Woodgrain or Anthracite Grey on the outside with White Knight on the inside.
Single colour

Same colour on the inside and out

Dual colour

Different colours on the inside and out

explore handle & frame options
Here are some of the most popular frame configurations

Your designer will talk you through the vast range of options available to suit your needs

  • quad-split-middle
  • single
  • top-opener
  • triple-fire-escape
  • vertical-split
  • vertical-triple
  • Double top casement window configuration
Anthracite Grey aluminium casement window
Inside View
Select your handles

Anthracite Grey aluminium casement window Chrome handle option
Glass options

Your designer will help you select the type of glass that’s most suited to each room in your home to give you the best levels of energy-savings, security, noise reduction and privacy.

You can also give your windows the look you want by choosing from our plain, decorative or obscured glass and insert options.

Clear glass
Select glass type
We make every glass panel uniquely for your windows and offer you an exciting choice of clear, obscure and leaded glass, as well as decorative designs and bars. Your Anglian designer can help you choose the right glass for each window during your appointment.
Glazing Options
  • Double Glazing
Energy rating / performance options
These tell you how much energy a window loses or gains. They’re based on three factors – how much heat is retained or lost through the window, how much heat can be harvested from the sun and how much heat is lost through draughts. More about energy ratings
  • B

Aluminium alloy has been used to create quality windows for more than 20 years, and our double-glazed aluminium casement windows are energy-efficient, secure and durable. Because each window is tailor-made by our own craftspeople, you can pick every feature individually, including the size of the openings, the handles and plain, decorative or obscured glass. With more than 200 paint colours, including the option for different colours on the interior and exterior, you’ve scope to let your imagination run free.

Be inspired by our customers who have transformed their homes

Brighten Your HomeTop of the range product to enhance your home

When Rick bought his new home, he knew it pretty well – he was buying it from his daughter. He decided to call in the experts to replace the windows, soffits, guttering, cladding, fascias and bargeboards before moving his furniture in because he didn’t want the continuous upkeep once he’d settled into his new home.

But that wasn’t Rick’s only reservation with the house; he didn’t like the style of windows it had been fitted with when it was built around 10 years ago. “It already had double glazing but the view was too restricted by the bars between the panes of glass – I wanted windows I could look out of!”

After deciding to buy from Anglian Home Improvements, the timetable couldn’t have been smoother. Rick went on holiday while the windows were being made and was back before the windows and Rooftrim were fitted.

“I think the changes have made the interior lighter – I’ve got very good-looking windows!” he says.

Anglian case study - Thorne

Why Choose Anglian?

You'll want to be certain that you've chosen the right company to replace your windows, so discover the Benefits of Anglian Glazed Windows and rest assured that you've made the best decision. We guide you through every stage of the process, even making payment easy. As you can see below, we confidently guarantee the quality of our work.


We use only the best materials and finest craftsmanship throughout our 50 years in the business to bring you top quality products that will last for years.

  • Premium materials
  • Individually designed and built
  • BBA certified products
  • Made in Britain
Read about our accreditations


We use the finest materials and craftsmanship, so we're confident that you won't need to call on our guarantees:

  • 10-year guarantee on uPVC, wood and aluminium
  • 5-year guarantee on stained wooden windows
  • 15-year guarantee on our Ultra gas filled units
  • Quality Assurance at every stage of production
Our guarantees

Our Accreditations

Feefo accreditation
Awarded Feefo Trusted Merchant for customer satisfaction in 2015 & 2016
British Board of Agrement windows accreditation
The British Board of Agrement provides certification on the quality of our products.
Energy Saving Trust logo
Windows with a WER rating of A or above can be registered with the Energy Saving Trust.
Trustmark logo
TrustMark is a government endorsed not-for-profit organisation that operates a quality mark framework through more than 30 scheme operators who work in the repair, maintenance and improvement sector.
Glass and Glazing Federation logo
Anglian is a leading member of the Glass and Glazing Federation (GGF).
Made in Britain logo
Certifies products made from start to finish in a British factory by British craftspeople.
The Glazing Arbitration Scheme Logo
Independent service that deals with disputes between registered businesses and consumers.

Customer Reviews

Windows FAQs

Find out more about double and triple glazing in our useful Window FAQs Section or read our articles below.

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Anglian FAQs

Got questions about choosing Anglian? Find out why Anglian is the right choice for your replacement windows.

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Home Inspiration From Anglian

You'll want to pick your new casement windows wisely, so our "Good to be Home" online magazine will not only help to inform your choices but it's bursting with tips and information to help you transform your home. With great interior design tips, the background on Laura Ashley's stunning glass designs and the science behind our energy-efficient windows, you'll find what you're looking for.