Timber
Bay windows provide wide, unobstructed views giving a real sense of spaciousness. They make a beautiful and classic choice for any home. uPVC bay window styles are affordable, aesthetic and efficient – the perfect option no matter your taste.

Traditional Elegance
Bay windows are a traditional, elegant addition to any home. The style remains consistent whilst the window frames receive modern upgrades to improve efficiency compared to traditional timber bay windows. Their classic look creates the impression of additional space in the home.
Good Ventilation
A bay window gives you the option of having two operating windows, allowing you to enjoy light ventilation from two directions of the window rather than just one. Having different window configurations open to you means you can be more flexible with your ventilation.
Add Value To Your Home
Installing a bay window to your property can add great value. By letting in more light, a bay window on the ground floor is a brilliant way to make living, dining, and kitchen spaces feel much bigger and brighter. This can impact the buyer experience greatly.
Better Views
Double glazed uPVC bay windows offer excellent views of your surrounding area whilst also being incredibly efficient. They work great as first and second story additions, where they’re known as an oriel window instead (but they still do the same thing).
Enhanced Light
Bay windows provide wide panoramic views, exposing rooms to lots of light from multiple directions. This can transform the way you experience the space compared to individual windows against a flat wall which don’t invite as much light into a space.
Energy Efficient
Bay windows will increase the overall efficiency of your home making it warmer and more comfortable. The glass unit fits securely into its modern uPVC frame, increasing efficiency and trapping more of your home’s heat inside where it belongs.
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What Are uPVC Bay Windows?
uPVC bay windows give you a unique outside view while adding lots of natural light and depth to your room. They’re immediately noticeable both inside and out thanks to their design.
They add more space to your room, creating the perfect window seat to enjoy the enhanced views you can enjoy, or else work great as storage depending on your final window design. There are few features as eye-catching as a gorgeous uPVC bay window, and with planning, you can add extra space to your home in a smart, affordable way.
Even on the outside, uPVC bay windows add a sense of style that other types of window can’t compete with. They look stunning and are a feature most people would like to have included in their home.
How Do uPVC Bay Windows Work?
uPVC bay windows work much like other windows, only their configuration means they protrude out from the property rather than sit flat against the wall. They also work wonderfully for your home’s ventilation as you can open a window at either end to increase airflow.
Modern materials improve bay windows and their efficiency and security. By opting for uPVC frames, you get a window that’s strong, durable, and resistant to harsh weather, whilst still being efficient, secure, and affordable. In fact, uPVC bay windows are some of the most cost effective home improvements you can make.
What Do uPVC Bay Windows Cost?
You can expect the cost of uPVC bay windows to be in the region of £1,050 to £2,300. There are a lot of factors that can make your windows cost more or less, such as the size, finish, design features, type of glass, and more. This is why it’s important to get a range of quotes from trusted installers before making a choice.
Using our service is free and fast, giving you access to local installer quotes in moments!
For a good uPVC bay window cost estimate, however, this is a good benchmark. When thinking about bay windows, consider the following and how they may impact the cost:
- Do you want decorative glass or a sidelight?
- Do you want additional thermal efficiency features?
- Do you want to include additional security features?
Depending on your answers, your uPVC bay windows may cost a lot more than our initial estimate. Your installer should be able to tell you more about these extras and what they will do to the final price.
uPVC Bay Window Prices (3 Section)
| Casement Window Size | Colour | Guide Price |
|---|---|---|
| 240cm x 120cm | White | £1050 – £1150 |
| 240cm x 120cm | Wood Grain | £1150 – £1250 |
| 240cm x 150cm | White | £1125 – £1225 |
| 240cm x 150cm | Wood Grain | £1250 – £1350 |
| 300cm x 120cm | White | £1150 – £1250 |
| 300cm x 120cm | Wood Grain | £1275 – £1375 |
| 300cm x 150cm | White | £1250 – £1350 |
| 300cm x 150cm | Wood Grain | £1375 – £1475 |
uPVC Bay Window Prices (4 Section)
| Casement Window Size | Colour | Guide Price |
|---|---|---|
| 300cm x 120cm | White | £1400 – £1500 |
| 300cm x 120cm | Wood Grain | £1525 – £1625 |
| 300cm x 150cm | White | £1500 – £1600 |
| 300cm x 150cm | Wood Grain | £1650 – £1750 |
| 360cm x 120cm | White | £1500 – £1600 |
360cm x 120cm | Wood Grain | £1650 – £1750 |
| 360cm x 150cm | White | £1600 – £1700 |
| 360cm x 150cm | Wood Grain | £1750 – £1900 |
uPVC Bay Window Prices (5 Section)
| Casement Window Size | Colour | Guide Price |
|---|---|---|
| 360cm x 120cm | White | £1850 – £2000 |
| 360cm x 120cm | Wood Grain | £1900 – £2050 |
| 360cm x 150cm | White | £1950 – £2100 |
| 360cm x 150cm | Wood Grain | £2050 – £2200 |
| 400cm x 120cm | White | £1900 – £2050 |
| 400cm x 120cm | Wood Grain | £2000 – £2150 |
| 400cm x 150cm | White | £2050 – £2200 |
| 400cm x 150cm | Wood Grain | £2150 – £2300 |
What Does Your uPVC Bay Windows Quote Include?
There are a few things you’ll expect to see from a window quote. The first is obviously the overall cost of the window project – the product and installation costs so you know exactly how much you’ll pay – but you should also expect some additional info, too.
Everything should be broken down clearly for your convenience to help you compare quotes directly. If an installer isn’t willing to break down each aspect involved in the overall price you’ll pay, then it’s likely that they’re hiding something from you and you’re paying more than you ought to be.
Transparency is key when you use our comparison service, which is why we’ll only show you quotes from local installers who can actually break down the costs for you for clarity.
We make sure that the quotes you receive from us are fully transparent, and you can be sure every detail is made clear. This means you’ll know exactly what’s involved, and how much things cost, such as:
- A full technical survey
- The style, size, and colour of the windows
- The energy efficiency rating (whether A, B or C WER)
- Your security features
- The glass chosen (standard, toughened or obscured)
- Handles
- Installation costs
Registration with an industry body, such as FENSA or Certass, and relevant certification should also be present in order to guarantee that the quotes provided are accurate, true and fair.
Why Choose Double Glazing On The Web?
With nearly 20 years industry experience, we know what customers are looking for when comparing local installers and their prices. Trust our network of over 100 trusted window and door installers to find the best of the best in your local area.
We only work with those installation companies with a proven track record and who have been individually vetted by our team. The quotes they provide must be detailed and direct, showing a full breakdown of the costs involved and the final price you’ll pay for the full project.
Trusting our quote comparison support is the wise thing to do when you’re looking for new uPVC bay windows. We’ll guide you through the whole process and make sure you get the best price possible for your windows project.

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