Slimline design
We offer six popular profile choices; the modern Chamfered style, classic Ovolo frames, heritage, flush, bay and contemporary.
January SALE Now On
With 3 years interest free credit or buy now pay 2026**
Get a price
Bespoke Aluminium Windows Made to Measure
Our bespoke aluminium windows can be designed in any shape, size or style. If you have a window design in mind or an awkward space to fill, a custom-made aluminium window is perfect. With slimline aluminium frames, they’ll add a contemporary touch to your home. We can finish aluminium windows in any of the 150+ RAL colours, or even authentic wood effect finishes to complement any style of home.
Replacement windows are an upgrade to your home’s security and energy efficiency. Aluminium window frames are draught-free and naturally insulating, attaining energy A+ ratings. Aluminium is also an exceptionally robust and durable choice, so your home will be better protected.
Request a Quick Quote
What aluminium bespoke windows can do
Effective protection against corrosion
Finished in an anti-fade, anti-corrosion coating, our aluminium windows are exceptionally strong and weather-resistant.
Lightweight, energy efficient design
Featuring a unique polyamide thermal break, our aluminium windows achieve energy A+ ratings and low U-values.
Exceptional home security is locked in
Able to last up to 45 years, the majority of our aluminium windows are certified by the Police Preferred Specification Secured by Design and tested to PAS 24 as standard.
10 years’ product guarantees
All new windows carry a standard guarantee for 10 years on fit, function and finish.
100% recyclable
Durable, strong and endlessly recycled, aluminium is one of the most sustainable construction materials available.
Colours
A wide range of traditional and statement colours is available including 150+ RAL colours.
White
Ivory White
Light Cream
Mid Cream
Green Grey
Grey
Smoke Grey
Warm Grey
Shadow
Slate Grey
Anthracite Grey
Midnight Grey
Deep Black
Dark Brown
Chocolate Brown
Warm Red
Ocean Blue
Mid Green
Any RAL Colour
Glazing
Our aluminium windows come with EcoMAX Glass™, one of the most sustainable glass units on the market. You can also choose Comfort Glass for higher levels of thermal efficiency, security and noise reduction, or decorative glazing, such as stained glass, floral patterned, or modern etched glass.
Furniture
Authentic furniture for your sliding sash windows
A range of window furniture options adds a personal touch to your windows. Choose from elegant designs for handles and window restrictors and pegs.
Furniture Handle Options
Window Handle
Monkey Tail Handle
Pear Drop Handle
Furniture Colour Options
Black Finish
Brass Finish
White Finish
Chrome Finish
Steel Finish
Advice + Guidance
Replacement custom-made aluminium windows in Ipswich, Oxford, Essex and Suffolk
With an energy A+ rating, our bespoke aluminium windows stop draughts and will keep your heating bills lower. Available in double glazing or Comfort Glass, they incorporate either two or three glass panes and achieve low U-values.
Aluminium is perfect for harsher environments, such as coastal areas, and offers a lifespan of at least 45 years, without needing any major upkeep. With just a simple clean, they will stay looking as good as the day they were installed.
Whatever shape or style you decide on, aluminium frames are assured to provide security for your home and family. They’re fitted with multi-point locking mechanisms, which bolt the frame to the windowpane securely. For greater peace of mind, we can also include additional security features into your individual design.
Get A Price
Made-to-measure slimline aluminium windows
Aluminium is known for being exceptionally strong and lightweight. It can be shaped to accommodate arched, circular or triangular or any shape you have in mind. With more than 150 RAL colours and elegant wood stain effects, they’ll easily suit any style of home. As your new windows will be custom-made, we can include any of our <a href="/windows/window-furniture"window furniture pieces and decorative glazing to create a replacement window that is just as you’d like it.
Get a priceYour Window and Door Journey with SEH BAC
Replacing your windows and doors is easy.
Choose the right windows and doors
Fill out a form online or visit one of our 10 showrooms to see our range of high-quality windows and doors up close and speak to our expert team for any advice on materials, styles, colours, energy efficiency and glazing. Once you are happy with your choice, we’ll provide you with a free no-obligation quote.
Place your order with us
When you want to go ahead with your order, the details have been approved, and we have received your order deposit, our administration team will provide your contract to a surveyor.
Your surveyor assessment
The surveyor will contact you to arrange a date that is convenient to come to your home and review the project scope, take accurate measurements and discuss any other matters that need to be considered. We will then confirm the surveyor’s assessment.
Confirm an installation date
Our installation department will contact you to arrange a date for your window and/or door installation and your products will be ordered and manufactured, using cutting-edge techniques and industry-leading materials.
You're ready for your installation
On the day, our skilled team will arrive at the agreed time to install your products, ensuring minimal disruption. They’ll explain the locking and opening systems and share maintenance tips to keep your products looking brand new. Once your installation is complete, we will contact you to confirm that everything has been finished.
FAQs
How much will new bespoke aluminum windows cost?
Thermally sound, industry-accredited custom-made windows must be individually priced to take into account manufacturing to size and any features you wish to specify. We offer a range of finance options to spread the cost of new windows. You can read more about what affects the price of double glazed windows on our site.
Which window material is best?
All our windows are designed for visual appeal as well as security, thermal efficiency and durability. Complete with industry-leading and highly accredited hardware, any of our award-winning replacement windows could transform your home. Read more
Are aluminium windows energy-efficient?
Strong, adaptable, low maintenance, and aesthetically striking, modern aluminium windows outperform many other window materials in terms of efficiency. Read on.
Which are the best windows and doors for homes by the beach?
Both uPVC and aluminium windows are suitable for properties situated near the coast. Please see our recent article for more information.
Begin Your Project
Get your free quote – with no-obligation to buy. Simply fill in the online contact form below to get started:
Get inspired with our product brochures
Ready to make your dream home a reality but don’t know where to start? Find all the inspiration you need.
Download a brochure
Earn rewards when you recommend a friend
Recommend a friend and we’ll give you a free amazon voucher when that person places an order with us.
Recommend a friendMulti-award winning company
Here at SEH BAC, we’re proud to have won many prestigious awards for our products as well as our work in the community:
We’re one of the largest regional retail companies
Vetted for professionalism, competency & compliancy
What folks say about us
Astonishingly good or room for improvement, it’s all here. Thank you to all our customers old and new. We really appreciate your reviews. Really. Yes, really, really.
Our Accreditations
