Bay and bow windows,
more light, and more room.
Box, canted or curved bays that take the window out beyond the wall, for more daylight, a wider view and a deeper room. In uPVC or aluminium, measured by our own surveyors, joined on bay poles and fitted across Suffolk and Essex by Admiral’s own team. Take a written price away, and decide in your own time.
- Box, canted or curved
- Surveyed by our own team
- Showroom in Ipswich
“From query, to quote, to survey, to installation – the service received was beyond expectation. The windows and doors installed are really good quality…”
The bay window systems we fit
- Halo
- REHAU
- Kömmerling
- Residence 7 and 9
- Smart
Bay windows, as their makers photograph them.
Photos from REHAU and Endurance, who make windows and doors we fit. Every bay we fit is measured by our own surveyors.
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Leaded top lights
- Shown
- A white bay with stained-glass top lights
- Photo
- REHAU
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Anthracite grey
- Shown
- A stone-trimmed bay on a new brick house
- Photo
- REHAU
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Bay and front door
- Shown
- A white bay beside an Endurance door
- Photo
- Endurance Doors
Product photos from the makers’ own brochures: REHAU and Endurance Doors. Our own recent jobs are under Recently fitted.
Bay or bow? The difference is the shape.
Both stand out from the wall of the house, and both are made of several windows, or facets, joined on bay poles. A bay has straight facets set at angles; a bow is a gentle curve of equal panes.
- Canted bay: three or more facets with angled sides, often a wide pane in the middle. The classic Victorian and Edwardian bay
- Box bay: square sides at right angles to the house, common on 1920s and 1930s semis
- Bow: four or more equal panes in a shallow curve, a Georgian favourite
- Opening sashes wherever you want them, from casements to tilt and turn or sliding sashes
Recently fitted by our own crews.
Two recent window jobs from our Facebook page, one of them with a bay, and what went in.
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Flush casements and vertical sliders
- Fitted
- Halo System 10 mitre-jointed flush casements and Ecoslide vertical sliders
- Finish
- Smooth white, with 18 mm internal Georgian bars
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Bay and casement windows
- Fitted
- White uPVC windows, in bay and casement styles
- Glass
- Energy-efficient double glazing
Photos and product lists from Admiral’s Facebook posts, 2025 and 2026.
Replacing a bay. What we check first.
A bay is more than a window: it has angles, a sill, often a little roof, and sometimes a wall or a room above it. So our own surveyor looks at the whole bay before we price it.
At the survey
- Every facet measured, and the angles between them
- How the bay is built, and what sits above it
- The sill, the bay roof and the brickwork, so you know what the bay needs before you decide
- Which panes should open, and which way
On the day
- The old frames out, and the old windows away with us
- New facets joined on bay poles, with neat covers over the joints
- Sealed, finished and cleared up behind us
Adding a bay where there isn’t one is building work, and at the front of a house it usually needs planning permission. We’ll tell you what’s involved.
Which bay suits your house? Our honest advice.
Most of the time the house decides: we replace the bay you have, shape for shape, and choose the frames and openers that suit it.
In the bay
- Casements: the usual choice, standard or flush
- Sliding sashes: right for Victorian and Edwardian canted bays
- Tilt and turn: for a bay onto a path, or one you want to clean from inside
- Leaded lights or stained glass in the top lights, if you like them
Frames
- uPVC: steel-reinforced, in white, grey, black, cream or woodgrain
- Aluminium: Smart, the system we use for every aluminium bay, in over 150 RAL colours, with marine-grade coatings near the coast
- Want slim steel-look bars instead? See Crittall-style windows
224 reviews. Not one below four stars.
Three window reviews, as they were written. Admiral invites every customer to review on Trustpilot, good or bad.
4.9/5
Also rated 4.9 from 30 reviews on Google. Figures checked 19 October 2026.
- 17 windows
“We had 17 windows and 2 doors replaced. Fantastic job, very pleased. The fitters, Matt and Josh, were skilled, polite and very helpful.”
G Wright - Value
“Excellent product, very good quality UPVC windows and Aluminium doors. The value for money was really good and better than the 4 other local competitors we viewed.”
Adrian Leveridge - Comfort Plus glass
“The windows and doors are great looking product fitted with comfort plus glass which I recommend you pay the extra for.”
Julian Pyke
From first call to final clean-up.
Clear advice, a price in writing and our own team for the fitting. Four steps, at your pace.
Tell us what you need
Send the quote form, call us, or come and see every window style on display in our Ipswich showroom.
Free survey
One of our own surveyors measures every opening and talks you through frames, glass and styles. It costs nothing.
Your written quote
Take it away and decide in your own time. No pressure, and finance if you’d like to spread the cost.
Fitted by our crew
Made to measure and fitted by Admiral’s long-serving fitters, who clear up and take the old windows away.
Spread the cost. Over 1 to 10 years.
Finance through Novuna at 12.9% APR representative, on amounts from £500 to £25,000, with a 10% to 50% deposit.
There’s also a buy now, pay later plan at 14.9% APR, with your first payment put back 6 or 12 months. Finance is subject to status.
Your figure, not our price.
£100.54a month for 5 years
After a £500 deposit. Total payable £6,532.40, including £1,532.40 interest. An illustration only, not an offer of credit.
Representative example: cash price £8,000, deposit £3,000, amount of credit £5,000, 12 monthly payments of £444.70, total charge for credit £336.40, total amount payable £8,336.40. 12.9% APR representative.
Finance is subject to status. Admiral Home Improvements Ltd (FRN 1053043) is an Appointed Representative of Ipswich Trade Frames Ltd (FRN 794166), a credit broker, not a lender, which is authorised and regulated by the Financial Conduct Authority. Finance is provided by Novuna.
See every style before you choose.
Full-size, working displays of windows and doors in uPVC, aluminium and composite, with parking at the door. Book ahead and we’ll make sure an adviser is free.
Visit our Ipswich showroom
Monday to Friday, 7.30am to 4.30pm
- Monday to Friday
- 7.30am to 4.30pm
- Saturday and Sunday
- Closed
Hampstead House, Felixstowe Road, Nacton, Ipswich IP10 0DE. Parking right outside the door.
Questions about bay and bow windows.
Anything else? Request a quick callback or call 01473 659062 and ask us straight.
How much does a bay window cost?
It depends on the size and shape of the bay, how many panes open, the frame, the colour and the glass, and on what the bay itself needs. Our own surveyor measures it for free, and you get a written quote to take away. Finance is available at 12.9% APR representative.
What’s the difference between a bay and a bow window?
A bay has straight facets at angles to each other, usually three, with a wide pane in the middle; a box bay has square sides. A bow is a shallow curve of four or more equal panes. Both project from the wall and are joined on bay poles.
Can you replace a bay that has a wall or a roof above it?
Usually, yes. Our surveyor checks how the bay is built and what sits above it before we quote, and if the bay needs more than new windows, we’ll tell you at the survey, before you decide.
Do I need planning permission?
Not to replace the windows in a bay you already have: on a house, that’s usually permitted development. Building a new bay is an extension, and at the front of a house it usually needs planning permission. Flats, listed buildings and conservation areas have their own rules, and we check yours at the survey.
Can the windows in a bay open?
Yes, as many as you like. Each facet can be a casement, a tilt and turn or a sliding sash, with fixed panes between, and top lights above if the bay is tall.
Are bay windows energy efficient?
A new bay is far warmer than an old one. All our windows are A-rated as standard, with triple glazing and acoustic glass available, and in England replacement windows must reach a U-value of 1.4 W/m²K or better, or energy rating Band B. Every window we offer meets or beats that.
uPVC or aluminium bays?
uPVC is the affordable, low-maintenance choice, in white, grey, black, cream or woodgrain. Aluminium bays come from Smart, in over 150 RAL colours, with slimmer frames for more glass. Try both in our showroom.
Which areas do you cover?
We fit bay and bow windows across Suffolk and Essex from our showroom in Ipswich, including Felixstowe, Woodbridge, Kesgrave, Stowmarket, Hadleigh, Manningtree and Colchester. Put your postcode in the quote form and we’ll confirm.