
uPVC Bay and Bow Windows

uPVC Bay and Bow Windows
Secure, Safe & Guaranteed.
Our uPVC bay and bow windows at QUAD combine timeless style with exceptional performance, bringing natural light and elegance to any property. Designed and manufactured with precision, each window is bespoke, tailored to the exact dimensions and requirements of your project. With a wide range of styles, shapes, colours, and glazing options, our bay and bow windows offer complete flexibility to suit both modern and traditional properties.
Built using high-performance, multi-chambered profiles and premium components, these windows are engineered for lasting durability, strength, and reliable operation. They deliver excellent energy efficiency, enhanced security, and superior weather protection, making them a practical as well as stylish choice. Whether you’re looking to enhance the kerb appeal of a home, maximise light, or create a spacious, welcoming interior, our bay and bow windows provide a versatile solution that meets the highest standards of quality and performance.
Market-Leading, Sleek Design.
- Multi-chambered uPVC profile for enhanced thermal efficiency
- Bay or bow styles
- PAS24 compliant
- British-made
- High-security multi-point locking systems as standard
- Multiple glazing options for acoustic, security, or energy performance
- Installer-friendly design

Average U-Values
| CEN Standard (Double Glazed) | 1.2 W/m2k |
| CEN Standard (Triple Glazed) | 0.9 W/m2K |
Other
| Glazing Thickness | up to 40mm |
| Security | PAS 24 Compliant |
| Frame Options | Chamfered / Sculptured |
| Available Cill Sizes | 85mm / 150mm / 180mm / 225mm |
uPVC Window Specification
All of our uPVC bay and bow windows are made to order, ensuring the perfect fit in every home. The multi-chambered design ensures maximum durability and weatherproofing.
The windows have a variety of glazing options to choose from and high security laminated glass units or internal blinds are also available. For added privacy, opt for our decorative or patterned glass options for a unique design.

Support at Every Stage
With our bay and bow windows, you’ll receive expert, hands-on support and downloadable guides & information, our windows come with everything they need for smooth installation.
Our expert team have assembled a range of resources designed specifically to assist in installing each of our products. With our helpful advice and easy to read guides, you will have everything at your fingertips – just take a look at our handy info hub.
Elevating Homes with uPVC Bay and Bow Windows

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FAQs
What is a bay window?
A bay window is a window design that projects outward from the main wall of a building, creating a small alcove or “bay” inside the room. It’s typically made up of three window panels set at angles, forming a wider view and allowing more natural light to enter. Bay windows are popular for adding space, enhancing kerb appeal, and creating a bright, open feel in any home.
What is a bow window?
A bow window is a curved window structure made up of four or more window panels set in a smooth arc. Unlike the angular shape of a bay window, bow windows create a gentle, rounded projection that adds elegance and extra space to a room. Their design allows more light to enter from multiple angles, creating a bright, spacious feel and a distinctive architectural feature.
Do you need planning permission for a bay window?
In many cases, you do not need planning permission to install a bay window if it is considered a like-for-like replacement. However, if you are adding a new bay window where one didn’t previously exist, or if the design significantly alters the exterior of your property, planning permission may be required. Always check with your local planning authority before starting work.
How much do bow windows cost?
The cost of a bow window can vary depending on several factors, including the size of the window, the number of panes, the style of glazing, and the chosen frame finish. Additional features such as upgraded energy-efficient glass or bespoke colours can also influence the final price. For an accurate figure, it’s always best to request a tailored quote based on your project’s exact requirements.
