uPVC Bay Windows
Sealed Tight, Fitted Right™ · Insulation Tape on Brick-to-Brick Installs
A bay window adds real space and light to a room, projecting outward to create a natural window seat or extra floor space — and it’s one of the most effective ways to boost a period property’s kerb appeal. We supply and install them across East London, South London, North London, and South Essex, all BFRC energy rated and backed by a 10-year insurance-backed guarantee.
A recently completed square bay window installation — three-sided with right-angle returns, shown here front-on with equal sightlines, finished in white uPVC with A+ energy-rated glazing throughout. Swapping out tired, draughty frames like this one instantly opens a room up to more light — and gives you a proper window seat in the process.
Splayed, Square, or Bow — Built to Match Your Home
Bay windows come in a few distinct shapes, and getting the style right matters as much as the glazing itself:
- Splayed (canted) bay — the classic angled bay, most common on Victorian and Edwardian homes
- Square bay — a boxier profile that maximises internal floor space
- Bow window — a gentler, rounded curve made up of four or more panels, often used on larger openings
Whichever shape you’re replacing — or adding for the first time — we survey the opening properly and confirm the structural support (a bay window roof and headers need to be right, not just the frame) before quoting.
Our No-Salesman Approach
We’ve been fitting windows since 1999, and bay windows are no different from any other job we quote: no salesman visit, no inflated “was/now” pricing, and no follow-up calls chasing a decision. We survey, we quote, and if you’re happy, we book it in.
Built to Perform
Every bay window we install is BFRC energy rated, A+ or A++ as standard. Because it has more joints and a larger surface area than a flat window, we pay particular attention to weatherproofing — including our insulation tape around the frame on brick-to-brick installations — so the extra light doesn’t come with extra draughts.
Areas We Cover
We install bay windows across East London, South London, North London, and South Essex, including Romford, Chelmsford, and Basildon. If you’re just outside these areas, get in touch — we take on jobs in the surrounding towns too.
Frequently Asked Questions
How much does a bay window cost to replace?
Cost depends on the size and shape of the bay, the number of panels, and your choice of colour and hardware. We provide one clear, all-in quote after a free survey rather than a generic online price.
Do I need planning permission for a bay window?
Replacing an existing bay window like-for-like doesn’t usually need planning permission. Adding a new bay window where there wasn’t one before is more likely to need consent, particularly if it projects significantly from the property. We can advise during your free survey.
Get a Free Quote for Your Bay Windows
Call us today for your free, no-obligation survey and quotation. As a FENSA-registered installer with a no-salesman approach, we’ll talk you through your options and give you one clear price for exactly what you want.
Want to know More?
Call us today for your FREE, no-obligation quotation or fill out our Contact Form! For the most modern, energy-efficient replacement Windows, Doors and Conservatory with a 10-year Insurance Backed Guarantee for complete home Comfort & Designed to Keep You Warm, Safe, & Secure.
Alternatively, call your local number below to arrange an appointment.
East London: 📞 020 8472 4088 (head office)
South London: 📞0203 856 6667
North London: 📞 0203 856 6669
Epping: 📞01992 940 809
Chelmsford: 📞01245 208 058
Romford: 📞 01708 202 457
Great Dunmow: 📞 01371 704 771
