uPVC Bay Windows in London – Manufactured, Supplied & Fitted by NexGlazing
At NexGlazing, we proudly supply traders, builders, and homeowners across London and the surrounding areas. Thanks to our direct partnerships with leading manufacturers, we're able to offer competitive pricing while maintaining exceptional service quality. Whether you need manufacture only, supply only, or a full supply and installation service, our London-based team is here to help you with your next uPVC bay window project.
Benefits of Bay Windows
Installing bay windows can significantly enhance both the aesthetics and functionality of your home. Here are some of the top advantages:
Bay windows are designed to project outward, allowing light to enter from multiple angles. This creates brighter, airier rooms compared to standard flat windows.
Bay windows add architectural interest and elegance to the exterior of your home, boosting its visual appeal and property value.
Bay windows offer wider sightlines than standard windows, making them ideal for rooms with garden, street, or landscape views.
The extended structure of a bay window creates extra interior space—perfect for a window seat, reading nook, or decorative display.
With side-opening panels, bay windows offer better airflow and circulation, helping to maintain a more comfortable indoor environment.
Available in a variety of styles—like box, canted, or arched—bay windows suit both traditional and modern homes. Customisable in uPVC or aluminium, and in a range of colours including the popular grey finish.
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Choose from a Range of Bay Window Styles
Explore the range of styles we offer, with designs and features to suit different homes and properties.
Sash Bay Windows
- Available in uPVC or Timber
- Energy rated up to A for improved efficiency
- Classic sash styling with modern performance
Casement Bay Windows
- Available in Aluminium, uPVC, or Timber
- Up to A+ energy rating for excellent insulation
- Flexible and fully customisable to your home
Flush Bay Windows
- Available in uPVC or Timber
- Achieve up to A++ energy efficiency
- Ideal for conservation areas and heritage proper
More About uPVC Bay Windows
Bay windows typically project outward at 90°, 135°, or 150° angles, creating additional interior space and letting in more natural light. uPVC bay window frames are available in a range of shapes including square, rectangular, polygonal, arch-shaped, and even triangular designs set at 120° angles.
uPVC Bay Window Styles, Such As:
Canted Bay Windows – Featuring a flat front with angled sides, ideal for traditional homes.
Oriel Windows – Elevated bay windows often used on upper floors, adding charm and character.
Box Bay Windows – A box-like structure with a central large pane and two smaller side panes.
Circle Bay Windows – Wider and taller, with elegant moldings and multiple glass panes for a grand appearance.
Bow uPVC Windows – A curved design using several casement windows to form an elegant arch.
- Bay and Bow Windows
All our uPVC bay windows are available in a variety of colours, with grey being one of the most sought-after modern finishes.
What Is the Difference Between a Bay and Bow Window?
While bay windows and bow windows may appear similar from the outside, there is a key distinction between the two.
Bay Window
A bay window extends outward from the wall of a building and creates a usable internal alcove that you can stand or sit in. It typically features three panels set at angles (commonly 90°, 135°, or 150°), making it a popular choice for adding extra space and light to a room.
Bow Window
In contrast, a bow window is a curved window structure that is mounted onto the wall. It consists of four or more casement windows that form a gentle arch, offering a softer, rounded appearance. However, unlike a bay window, a bow window does not create a deep internal projection, meaning there is no walk-in space inside.
Bay Window Materials
At NexGlazing, we offer bay windows in a choice of uPVC, timber, and aluminium to suit every style and budget. When you request a quote, it includes a free site survey, delivery, and professional installation—with no hidden charges.
Start your bay window replacement project with confidence—get in touch with our team today.
Wooden Bay Windows
Aluminium Bay Windows
Choose from a wide variety of colour and glazing options to personalise your uPVC Bay and Bow Window:
Our range of uPVC Bay and Bow windows offers a wide selection of contemporary colour options to suit every style. For single-colour finishes, the frames maintain a consistent shade inside and out, creating a sleek and uniform look. At NexGlazing, we offer a variety of glazing options to suit your needs in terms of style, energy efficiency, and security:
Double Glazed
Triple Glazed
FAQ's
The cost of bay windows largely depends on the size of the opening and the number of window panels required. Another key factor is the quality of materials and installation. While low-budget options may seem attractive, they often lack proper reinforcement and can lead to distortion, cracking, or leaks over time. Investing in high-quality, professionally installed bay windows ensures durability, safety, and long-term performance.
If you’re replacing an existing bay window, planning permission is usually not required. However, if you’re adding a new bay window—especially in a conservation area or on a listed building—you may need approval from your local planning authority. At NexGlazing, we guide you through the process and can assist with planning applications if needed, making your project hassle-free.
Blinds are a practical and stylish solution for bay windows. You can install individual blind panels on each section for a clean, fitted look. Roller blinds and Venetian blinds are especially popular, offering flexibility, privacy, and a wide choice of colours and fabrics to complement your interior décor. Their sleek design also works perfectly with the angular or curved nature of bay window frames.