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uPVC & Aluminium Bay Windows, Supplied and Installed

A common feature in Victorian homes, bay windows are still a feature of many new builds today. If you don’t already have bay windows, a roof and base can be created to allow an easy installation that will dramatically alter the look of your home from the outside, whilst providing additional living space on the inside. Bay windows can incorporate either casement, sliding sash or heritage window styles.

Available in uPVC and aluminium, and in a range of colour and customisation options, replacement bay windows make a big improvement to your home. Whether you are replacing a different style or simply want to improve your home’s performance with double glazing or comfort glass windows, it’s easy to get going on the design process.

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    White uPVC bow window

    Desired Aesthetic

    Incorporate casement, sliding sash or heritage window styles for the look you want

    The Look You Want

    Choose from a range of colours and finishes to suit the exterior of your home.

    Strong

    The windows are connected using a strong, structural bay pole assembly or, for square bay windows, corner posts

    What are bay windows?

    Bay windows are designs protruding from the main walls of the room. With the windows angled away from the house, the space in your room feels greater. They usually have an inside angle of 90, 135 or 150 degrees, but there is no restriction as we can create any combination of windows for you. Bays can also be used for window seating areas in room interiors perfect for idle gazers or bookish types alike.

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    What a bay window can do

    More light

    Protruding from the building a bay increases the available light into a room

    Extra character

    Bay windows add to a homes visual appeal as well as adding interior space

    Greater comfort and value

    Improved light and ventilation, bay windows often increase a homes value too

    Better thermal performance

    Our windows are made to fit perfectly from insulating materials and easily achieve A ratings.

    Exceptional home security is locked in

    Featuring locks embedded into the frame, casements add an extra level of security as they can't be picked or drilled from the outside.

    10 years’ product guarantees

    All new doors carry a standard guarantee for 10 years on fit, function and finish.

  • Styles
  • Colours
  • Glazing
  • Frame Options
  • Furniture
  • Styles

    Colours

    Our uPVC and aluminium windows are available in a wide range of colours, including more than 150 RAL colours and a range of authentic wood grain finishes. Dual colour options with contrasting exterior and interior frames are also available.

    uPVC bay window colours

    White

    White

    Clotted Cream

    Clotted Cream

    Pearl Grey

    Pearl Grey

    Chartwell Green

    Chartwell Green

    Elephant Grey

    Elephant Grey

    Slate Grey

    Slate Grey

    Slate Grey Grained

    Slate Grey Grained

    Basalt Grey

    Basalt Grey

    Anthracite Grey

    Anthracite Grey

    Anthracite Grey Grained

    Anthracite Grey Grained

    Black Brown

    Black Brown

    Steel Blue

    Steel Blue

    Racing Green

    Racing Green

    Ruby Red

    Ruby Red

    Turner Oak

    Turner Oak

    Irish Oak

    Irish Oak

    Golden Oak

    Golden Oak

    Rosewood

    Rosewood

    Mahogany

    Mahogany

    Walnut

    Walnut

    Dark Oak

    Dark Oak

    Aluminium bay window colours

    White

    White

    Ivory White

    Ivory White

    Light Cream

    Light Cream

    Mid Cream

    Mid Cream

    Green Grey

    Green Grey

    Grey

    Grey

    Smoke Grey

    Smoke Grey

    Warm Grey

    Warm Grey

    Shadow

    Shadow

    Slate Grey

    Slate Grey

    Anthracite Grey

    Anthracite Grey

    Midnight Grey

    Midnight Grey

    Deep Black

    Deep Black

    Dark Brown

    Dark Brown

    Chocolate Brown

    Chocolate Brown

    Warm Red

    Warm Red

    Ocean Blue

    Ocean Blue

    Mid Green

    Mid Green

    Any RAL Colour

    Any RAL Colour

    Glazing

    Our uPVC and 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.

    Frame Options

    Choose the perfect profile for your finished window

    Choose from chamfered, a contemporary, straight-edged style, ovolo, a more traditional, decorative finish or flush sashes that blend with the external face of the window.

    Ovolo Frame

    Ovolo Frame

    Flush Sash Frame

    Flush Sash Frame

    Chamfered Frame

    Chamfered Frame

    Furniture

    Stylish furniture to complete your 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

    Window Handle

    Monkey Tail Handle

    Monkey Tail Handle

    Pear Drop Handle

    Pear Drop Handle

    Furniture Colour Options

    Black Finish

    Black Finish

    Brass Finish

    Brass Finish

    White Finish

    White Finish

    Chrome Finish

    Chrome Finish

    Steel Finish

    Steel Finish

    Bay windows will add character to any style of home

    With a wide range of colours available in uPVC and aluminium, you can specify the perfect bay or bow window design to suit your home. From a Victorian style oak bay window to contemporary slimline grey bow windows—all windows can also be installed with dual-colour contrasting interior and exterior colours.

    We offer both bevelled (flat) and ovolo (curved) frames, and you’ll be able to choose from our window furniture collection for the finishing touches to complete the design. We also offer decorative glazing, including stained glass, leaded glass and patterned glass.

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    Light grey bay window on residential home
    White flush sash bay windows and flush french doors

    Bay windows in a range of custom designs and colours

    You can choose from uPVC and aluminium bay windows to complement your home’s existing character. We also offer decorative glazing options, including stained glass and frosted or etched privacy glass. Our window furniture collection will add the finishing touches to the overall appearance.

    Bay and bow windows can increase the amount of natural light that enters your home as well as providing an extra seating space. Whether you choose a simple three-sided bay window or a more substantial eight-sided design, we'll provide everything necessary to realise your ideas.

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    uPVC bay windows in Essex, Suffolk, and East London

    The least expensive material thanks to its modern manufacturing, uPVC bay windows suit any homeowner’s budget without compromising performance. A multi-chambered frame profile stops the warmth from escaping through the layered system. Able to last up to 35 years, uPVC is a maintenance-free window choice that won’t rot, fade or crack, even when exposed to harsh weathers.

    We offer flush uPVC casement windows in a variety of colours, including grey, Chartwell Green or white. We also offer a range of wood effects, replicating timber window frames; a perfect upgrade for older properties, they can also add a touch of character to modern homes too.

    uPVC Bay & Bow Windows
    Garden view of a white bay window
    Grey aluminium bay window

    Aluminium bay windows in a range of modern colours and styles

    Aluminium windows have thinner frames than other windows, increasing available light. A naturally insulating material, it won’t compromise on its thermal performance. A multi-layered framework reduces heat transfer. Aluminium is exceptionally robust, able to withstand even the toughest forces and the harshest weather.

    Aluminium has a smooth finish, and is offered in more than 150 RAL colours. We also offer woodgrain finishes to retain traditional character but with modern aluminium window benefits.

    Upgrading to aluminium bay windows is a sure way to add value to your home. They’ll last for at least 45 years, without degrading, rusting or fading; they’re also maintenance-free.

    Aluminium Bay Windows

    Double glazed bay windows will reduce your carbon footprint

    Our highest-rated double glazed windows have an energy A+ rating (the highest there is). So, you can be sure that they’ll keep the inside of your home at an optimum temperature.

    Efficiency is a result of careful design and engineering. Our windows feature new performance oriented technologies including multi-chambered window profiles, argon-filled inter-pane areas, low-e glass that’s specially treated to reflect heat back into a room, and the newly patented Warm Edge Spacer Bar.

    In a commitment to sustainability we include almost 100% biodegradable EcoMAX Glass™ as a standard fitment on all uPVC and aluminium products. We also offer Comfort Glass that is designed to outperform triple glazing thanks to the inclusion of a tough laminated layer and an effective low-e coating.

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    Full aluminium bay window installation
    White aluminium bow window

    Replacement bay windows will keep your home safe and secure

    Tired windows are more prone to burglaries as they are often much easier to break into. Upgrading your windows will not only add style they’ll also substantially reduce the likelihood of your home being targeted.

    Our range of window security features includes multi-point locking systems, multi-layered beaded frames that resist harsh forces, high-quality handle locks and shoot bolt locks. Our aluminium windows are tested to PAS 24.

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    Do bay windows need planning permission?

    Bay windows are the only window style that is classed as an extension because they need the wall to be expanded for the bay shape if you're replacing a window that isn't currently a bay style. This means that you will need to apply for planning permission before getting new bay windows installed.

    We can take care of any planning permissions for new windows and advise on the technicalities. We'll be able to tell you what would be the best solution for your home.

    Read our expert window planning permission guide
    White aluminium bay window
    Bevelled Glass

    What is the purpose of a bay window?

    Bay windows provide additional space, increase natural light, and improve the style of the room as well as the outward appearance of the house. It protrudes outward from the main structure, creating a nook or alcove that can be used for seating, display, or enjoying wider views. Bay windows often serve as architectural features that add charm and character to a building.

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    Compare window styles

    Casement Windows

    Casement Windows

    • Available in high-performance uPVC or aluminium
    • U-values as low as 0.8 W/m2K
    • • Multi-point locking system

    Popular Colours:

    Deep Black
    Anthracite Grey
    Smoke Grey
    White
    uPVC Sliding Sash Windows

    uPVC Sliding Sash Windows

    • uPVC authentic timber-alternative sash window
    • U-values of 1.4 W/m²k or lower
    • Multi-point locking system

    Popular Colours:

    White
    Black Brown
    Anthracite Grey Grained
    Elephant Grey
    Heritage Windows

    Heritage Windows

    • Made from uPVC to replicate timber
    • Achieve A++ energy ratings
    • Multi-point locking system

    Popular Colours:

    No. 10 Black
    Eclectic Grey
    Corse Lawn
    White
    uPVC Flush Sash Casement Windows

    uPVC Flush Sash Casement Windows

    • uPVC authentic timber flush sash window
    • U-Values as low as 1.3 W/m2K
    • Multi-point locking system

    Popular Colours:

    White
    Anthracite Grey Grained
    Elephant Grey
    Black Brown
    Tilt and Turn Windows

    Tilt and Turn Windows

    • Available in high-performance uPVC or aluminium
    • U-values as low as 1.0 Wm2K
    • Multi-point locking system

    Popular Colours:

    White
    Black Brown
    Anthracite Grey Grained
    Elephant Grey
    Conservation Windows

    Conservation Windows

    • Multi-point locking system
    • Achieve A++ energy ratings
    • Multi-point locking system

    Popular Colours:

    White
    Black Brown
    Anthracite Grey
    Elephant Grey
    Bespoke Windows

    Bespoke Windows

    • Available in high-performance uPVC or aluminium
    • U-values as low as 0.8 W/m2K
    • Multi-point locking system

    Popular Colours:

    White
    Deep Black
    Anthracite Grey
    Smoke Grey
    uPVC Windows

    uPVC Windows

    • Robust and durable frames
    • Available in seven styles
    • 20 years life expectancy, maintenance free

    Popular Colours:

    White
    Anthracite Grey Grained
    Black Brown
    Elephant Grey
    Aluminium Windows

    Aluminium Windows

    • Minimalist frames and sightlines
    • Available in four styles
    • Over 30 years life expectancy, minimal upkeep

    Popular Colours:

    Deep Black
    Anthracite Grey
    Smoke Grey
    White

    Your 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.

    Man working on machine

    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.

    Two people who identifies as men Installation windows.

    Frequently Asked Questions

    Find all the answers to our most frequently asked questions below.

    How much will bay 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.

    What is the difference between a bay and a bow window?

    Typically, bay windows feature an angled projection with three openings. Bow windows provide a smoother, curved or semi-circular projection with four or more openings.

    Which 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

    Do bay windows need planning permission?

    Where replacement is like for like to an existing bay structure no planning is needed. Where you intend to add a bay to a wall where none existed previously it is most likely you will need to apply for planning.

    Begin Your Project

    Get your free quote – with no-obligation to buy. Simply fill in the online contact form below to get started:







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