What are Bay Windows?
Bay windows are usually made up of three or more window panes, extending outwards in an arc or square to create a feature window. They provide extra space, flood a room with light and give you more of a view. Often found in period properties and cottages they also suit contemporary homes with their classic design and increased light.
Bay and Bow Window Configurations
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.

- Choice of uPVC or Wood
- Up to A-Rated for Energy Efficiency
- Traditional look with modern technology

- Choice of Aluminium, uPVC or Wood
- Up to A+ Rated for Energy Efficiency
- Versatile and customisable

- Choice of Wood or uPVC
- Up to A++ rated for energy efficiency
- Conservation area friendly

Bay Window Materials
We offer bay windows made of uPVC, wood, and aluminium. When you ask for a quote, it includes a free survey, delivery, and installation. There are no hidden costs. Begin your bay window replacement project with us now.

uPVC Bay Windows
uPVC bay windows are our most popular option. They come in casement, flush casement and sash styles. You can choose between double or triple glazing with a wide range of colours. These windows are secure, energy-efficient, practical and affordable.
- Up to A++ rated
- Double and triple glazing
- BBA accredited to last 35 years

Wooden Bay Windows
Wooden bay windows come in casement, flush casement or sash styles. You can choose painted or stained colour finishes for modern or listed homes. Timber bay windows are excellent natural insulators. They are great at helping to save energy.
- Up to A-rated
- 200+ colour choice
- FSC®-Certified wood

Aluminium Bay Windows
Casement aluminium bay windows are slim and stylish. They have strong frames and powder-coated finish. This makes them a great choice for modern homes. The windows are secure, durable and have insulated, thermally efficient frames.
- Slim, durable frames
- 200+ colour choice
- Lead and decorative glass options
Reasons to Choose Bay Windows
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Adds Value
Bay windows are a desirable feature of old and new properties, increasing light, space and style. Strong, high-quality materials with high energy ratings means installing bay or bow windows can increase the value of your home. A solid investment in any material or style.
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Colours to Match your Style
Whether you choose uPVC, aluminium or timber, there’s a bay window frame colour to match your home. Select from more than 200 RAL colours in wood or aluminium as well as the usual selection of classic shades in uPVC, including a dual colour option for a different shade on the outside to the inside.
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Secure and Practical
Accredited by the British Standards Institute (BSI), our bay windows are designed with security and practicality in equal measure. Our window frames have multipoint locking and key locking handles as standard.

Working with the Best Industry Bodies to Install the Best Bay Windows
View our industry accreditations for designing and manufacturing only the highest quality bay windows, as well as offering our customers the best in service and professional installation.
Compare Bay Window Energy Ratings

Instant Expert Advice
LiveChat 9am to 6pm Mon-Sun with our British based experts to discuss how we can help.
Choose Anglian for a National Company Local to you
10-year Guarantee
A 10-year parts and labour guarantee is included in your Anglian double glazing price.
Made in Britain
Our products are made from start to finish in a British factory by skilled craftspeople.
Price Match
If you find cheaper like for like uPVC windows elsewhere, we'll match the price.
Decide if Bay Windows are Right for your Home
Do new Windows Add Value to your Home?
Learn why it's worth considering new double or triple-glazed window to attract homebuyers.
Find out moreMade to Measure Windows
Discover how we help you create bespoke windows that are just right for your space, and your home.
Find out moreChoosing the right Window Material & Colour
Read our guide on how to choose between uPVC, wood or aluminium for your new windows.
Find out moreWindow Energy Efficiency
Find out the difference between an A++ and an E rated window and why we install A-rated as standard.
Find out moreSee What New Flush Windows Look Like on Your Home

Design your doors and windows online
- Style
- Colour
- Hardware

Your Questions Answered by us
The cost of having a bay window installed varies depending on the material you choose, the size, style, whether it is structural or non-structural other individual requirements for your home. It also depends which supplier you go with, our design team provide you with a unique quote, and how much you pay includes the in-home or remote visit, professional survey and installation.
While you'd do well to tell a bay and a bow window apart at first glance, there's a simple way to tell the difference. A bay window is usually comprised of three panes with a fixed central pane and an angled window to each side that opens. Whereas a bow window might be made up of four or five panes and tends to be rounded, so it appears like a half-circle from the exterior.
If you are replacing an existing bay window, then it is likely that you will not need planning permission. But this may be different if you are adding a new one to a room or if you live in a conservation area and you have a listed building. Before embarking on any project, it is important to consult with your local planning authority or if you go through a supplier like Anglian, we take care of any planning permission requirements for you.
Bay windows can add value to a property with their attractive design and extra space. They can add a unique element to the outside of a home as well as create more light and an interesting design feature within a room, all adding to the appeal of the property.
Blinds are a great option for bay windows, as you can fit individual blind panels to each section of the curve. Roller blinds or Venetian blinds add a simple elegance, with lots of options for colour and fabric to customise the look to match your decor.
Generally, it is possible to turn a regular window into a bay window, though this may mean additional structural work depending on the building. A large bay window needs to be supported by foundations as well as provide support for the structure above, though smaller bay windows may not need as much work to install. Always check if you need planning permission before making major changes to your home.
Modern bay windows won’t compromise a room’s energy efficiency to make it colder in winter. Different materials and designs will provide different levels of insulation, including uPVC, wood and aluminium, as well as if you have double or triple glazing, but all provide good heat retention.
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