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uPVC & Aluminium Bay Windows, Supplied & Installed

Bay windows are a common feature in Victorian homes and are still incorporated into new builds today. The epitome of British style, they will inject a touch of sophistication into your home whilst adding a light and spacious feel. With their recognisable angular or curved shape, they can seamlessly blend with both old and newer properties. If you do not 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 casementsliding sash or heritage window styles, dependent on your desired aesthetic.

We can supply and install uPVC or aluminium bay windows in over 150 RAL colours or a variety of wood effect finishes. You can choose between our high-performance double glazing or comfort glass in the design and buying 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 characterised by their designs protruding from the main walls of the room. With the windows angled away from the house, the space in your room instantly feels greater. They usually have an inside angle of 90, 135 or 150 degrees. However, we can create any combination of windows for you. Using our unique bay post technology, we can achieve the angle that is perfect for your home. They can also be used to incorporate stylish seating areas that provide the ideal place to settle down with a book and take in your beautiful outside views.

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    Why choose a bay window?

    More space & light

    Designed to protrude from the building, bay and bow windows flood spaces with natural light to create the sense of more space.

    Extra character & kerb appeal

    From restoring traditional property features to adding character to more modern homes, a new bay or bow window is the perfect option.

    Energy saving design

    Thanks to the streamlined design and components, today's bay and bow windows offer many incredible energy efficient features.

    Superior security

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

    Enhanced comfort & value

    Offering better levels of ventilation, due to the additional space and light bay windows provide, they can add considerable value too.

    Peace of mind

    Backed by a 10-year guarantee and a commitment to exceptional craftsmanship and customer satisfaction.

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

    Colours

    A wide range of contemporary, timeless, traditional & statement colours are available in uPVC and any RAL colours are available in aluminium, as well as a range of authentic wood stain finishes. Dual colour options are also available. Find casement window colour inspiration here!

    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

    Both double glazing and Comfort Glass are available in bay and bow window styles and we can also offer a range of textured and patterned glazing for added privacy or decoration. The benefits of upgrading your glazing are truly limitless - the most notable features include increased warmth, reduced energy bills & beating future energy price hikes. Allowing you to fully customise your windows to your personal style, we offer a variety of charming Georgian bar options too. For complete peace of mind, we also offer toughened glazing options to enhance your home security even further.

    Frame Options

    Choose the perfect profile for your finished window

    We have a number of distinctive styles of frame to choose from. The chamfered option is a contemporary, straight-edged style while the ovolo option provides a more traditional, decorative finish. Our flush option sees sashes that finish flush 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 make your windows even more complete

    We offer a range of furniture for your windows to look the part. Whether you want the traditional look with monkey tail handles in a vintage finish, or contemporary brushed steel, our elegantly designed handles bring form to functionality and are designed to fit naturally into the user’s hand. You can also choose from our selection of 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 contemporary, timeless, traditional & statement colours available in uPVC and any RAL colours in aluminium, we can custom design the perfect bay or bow window design to suit your existing home. From an original Victorian styled oak bay window to contemporary slimline grey bow windows, we cater to every personal taste. Our bay and bow windows can be installed with dual-colour options, meaning the outside and inside colours are different, so they’ll easily satisfy both your home’s interior and exterior appearance.

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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 high-performance uPVC and aluminium bay windows to compliment your home’s existing character. We also offer decorative glazing options, including stained glass options, and even frosted or etched glass, to retain your privacy. 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 giving the illusion that your room is larger, and providing an extra seating space. Whether you desire a stunning 3-sided bay window or require the grandeur of an 8-sided design, we'll provide everything necessary to bring your vision to life.

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    uPVC bay windows in Essex, Suffolk, and East London

    The most affordable window material, our uPVC bay windows provide the modern performances you’d expect of a replacement window solution from a leading double-glazing installer. They feature a robust multi-chambered window profile that actively retains the warmth inside of your home, for excellent energy efficiency. The durable uPVC window profiles will also heighten your home’s protection as they won’t give in to strong forces.

    Modern uPVC is maintenance-free, only needing an occasional wipe with a damp cloth to remove any build-ups of debris. We also finish our uPVC in an anti-fade coating, so they’ll look and perform like the day they were installed for up to 35 years. With our replacement uPVC bay windows, you can be assured that they won’t rot, crack or split over time.

    As uPVC is readily manufactured using pioneering techniques, it can be designed in a plethora of finishes, including a variety of colours. We can also install new bay windows in authentic wood effects for the traditional timber appearance that benefits from the advantages of uPVC.

    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 is a premium window material that boasts a superior performance that will keep your home energy efficient all year round with its naturally insulating and multi-layered frames. The most robust construction material around, it’s a sure way to secure for home from unwanted intruders as it won’t weaken or snap.

    With anti-corrosion and anti-rust features, our high-quality aluminium bay windows can last from at least 40 years. With their modern maintenance-free qualities, they won’t need any care to continue to perform like brand new, making them an ideal solution for busy lifestyles.

    Aluminium window profiles have a distinctive slimline design and smooth finish, providing an ultramodern aesthetic. The thin-framed appearance will let even more natural light brighten your room. With over 150 RAL colours and a number of wood effect finishes, they can blend with historic and modern properties alike.

    Aluminium Bay Windows

    Double glazed bay windows will reduce your carbon footprint

    If you already have bay windows, you can replace them for a more efficient alternative that will also add kerb appeal to your home. With a plethora of designs and styles, we can easily replicate your existing window appearance. This allows you to enjoy the traditional bay windows you know and love but reduce your energy bills. It will also give you a much more comfortable home during the winter months with less need to turn the heating up.

    Our pioneering window designs incorporate a range of advanced features for industry-leading energy performances of A+. We utilise warm edge spacer bars, beaded multi-chambered window frames, and glazing with exceptionally low U-values.

    We offer double or comfort glass options, all of which are compatible with our bay window specifications. Our A+ rated double glazing is the UK’s most favoured choice as it significantly improves the thermal insulation of your home. You’ll notice that your room is a more comfortable temperature, and the cold spots are eliminated. Comfort windows combine two highly efficient glazing panels with a built-in laminate layer and a special transparent Low-E coating that stops 56% more internal heat from escaping. A much more effective insulator than triple glazing. It’s ideal for homes that are prone to colder climates or in busy areas as it also boosts the window’s noise reduction.

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    Full aluminium bay window installation
    White aluminium bow window

    Replacement bay windows will keep your home safe and secure

    Tired looking windows are more prone to burglaries as they are much easier to break into. So, upgrading your windows will not only add serious style to your home, but they’ll also substantially reduce the likelihood of your home being targeted.

    We incorporate a number of security elements into our window specifications. This includes sophisticated multi-point locking systems, window handles which feature anti-pick locks, and window frame beading to increase their durability. If you’re looking for greater peace of mind, we can include additional security measures into your replacement bay windows. All of our high-quality windows are continuously tested to strict industry standards, assuring they’ll protect your family for many years to come.

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    Do bay windows need planning permission?

    We are commonly asked by homeowners whether new bay windows require planning permission. Bay windows are the only window style that is classed as an extension because they need the wall to be expanded to allow 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. However, if you're just replacing existing bay windows then you won't need to apply for planning permission.

    At SEH BAC, 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?

    The purpose of a bay window is to provide additional space, increase natural light, and enhance the aesthetics of a room. It protrudes outward from the main structure, creating a nook or alcove that can be used for seating, displaying objects, or enjoying panoramic 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.

    01

    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.

    02

    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.

    03

    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.

    04

    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.

    05

    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.

    Frequently Asked Questions

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

    How much will new bay windows cost?

    There are many aspects to consider when purchasing new windows, such as material, thermal performance and whether it's been accredited by industry bodies to ensure it's quality. To accommodate the majority of budgets, we offer a range of comprehensive finance options, including 2 years interest free credit & buy now pay later. Find more information on double glazed window prices here.

    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 curved, semi-circular projection with 4 to 5 openings.

    Do bay windows need planning permission?

    Modern double glazing lasts at least 20 years, but there are certain tell-tale signs you need to look out for. Read more

    Which window material is best?

    The first decision you need to make is which window material is right for your home. Your final decision will be heavily influenced by your own personal choice, budget, property appearance and building era.   Read more

    Begin Your Project

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







      By submitting your details you confirm that you agree to the storing and processing of your personal data by SEH BAC as described in the privacy statement.

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      Here at SEH BAC, we’re proud to have won many prestigious awards for our products as well as our work in the community:

      Installer awards 2022
      G21 Finalist
      SEHBAC showroom winner
      Ultraframe designer winner
      Conservatory and orangery awards winner 2019
      NHIC 2018 Consumer confidence award
      G17 Installer of the year
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      Improving South East homes for more than 50 years

      With 8 show centres across the South East, you’re not far away from achieving your dream home:

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