Bay windows are one of the most popular upgrades for period and modern homes alike, projecting outward from the wall to add extra floor space, flood a room with natural light, and give the front of a house real kerb appeal. At Inspired Glazing, we design and fit made-to-measure bay windows in uPVC and aluminium, built to suit everything from Victorian semis to contemporary new-builds across Windsor, Berkshire and the Thames Valley.
Types of Bay Windows
Not all bay windows are the same shape. The right style depends on your property’s period, the room, and how much extra space you want to gain.
- Canted (angled) bay windows — the classic style, with a flat front panel and two angled side panels, typically at 30° or 45°. The most common choice on Victorian and Edwardian homes.
- Box bay windows — square-fronted with the side panels set at 90°, maximising internal floor space. A strong fit for square bay window recesses in Victorian terraces.
- Bow windows — a gentler curve made up of four or more equal panels, giving a softer, more rounded look. Popular on larger Edwardian and Georgian-style properties.
uPVC or Aluminium Bay Windows?
Both of our core window systems can be built into a bay configuration:
- uPVC bay windows — our most cost-effective option, low-maintenance, and available in a wide range of finishes including anthracite grey and woodgrain foils. A strong fit for period homes on a tighter budget.
- Aluminium bay windows — slimmer sightlines for a more contemporary look, exceptional strength for larger bay configurations, and available in the full RAL colour range including anthracite grey (RAL 7016).
Benefits of a Bay Window
- More natural light — the angled or curved design means light enters from multiple directions throughout the day.
- Extra space — a bay window creates a natural window seat or display area without a full extension.
- Kerb appeal — bay windows are a defining feature on many period properties and can significantly improve how a home presents from the street.
- Better views — the wider field of view from an angled or curved bay makes the most of a garden or street outlook.
Bay Window FAQs
Do bay windows need extra structural support?
Most bay windows sit on a supporting sub-frame or a low masonry upstand rather than resting directly on a floor joist, and larger or upper-floor bays may need a steel support beam. We assess this during your free survey and handle any structural requirements as part of the installation.
Can I replace an existing bay window with the same shape?
Yes — in most cases we can match your existing bay’s angle and footprint exactly, so there’s no need for building work to the surrounding brickwork or roofline.
Are bay windows more expensive than standard windows?
Because a bay window uses more glass and frame than a single flat window, and often needs a supporting roof or sub-frame, it typically costs more than a standard window of the same wall opening. Get in touch for a free, no-obligation quote based on your exact size and style.
Do bay windows come with a warranty?
Yes, every bay window we install comes with our 10-year warranty, and all installations are FENSA registered and Building Regulations certified.