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UPVC, ALUMINIUM & TIMBER WINDOWS

Replacement Windows in Oxfordshire

Well-made windows, carefully fitted, with honest advice from a local company established in 1986.

Whether you are replacing one troublesome window or updating the whole house, 

we will help you choose the right style, material and finish — without the sales pressure.

White flush casement windows fitted by Admiral Windows on a stone cottage in Oxfordshire
Explore our window styles

Choosing New Windows Shouldn’t be Confusing

There are plenty of window styles, materials, colours and glazing options to choose from, but the process does not need to feel complicated.

We normally start with three straightforward questions:

1
What style suits the property?

Casement, flush casement, sliding sash, tilt and turn, bay, bow or something shaped to suit the opening.

2
Which material is right for the job?

Most of our window styles are available in uPVC, aluminium or timber, depending on the appearance, performance and maintenance you want.

3
What details do you prefer?

Colours, woodgrain finishes, glazing bars, handles, glass and opening arrangements all help make the windows right for your home.

We will talk you through the options, explain the practical differences and help you choose windows that look right, work properly and fit your budget.

No jargon for the sake of it, and no pressure to choose more than you need.

Find the Right Window Style for Your Home

Every property is different, and the windows need to suit the building as well as the way you use the rooms.

We fit everything from straightforward casement windows to flush and sliding sash styles, tilt and turn windows, bays, bows and windows made for unusual openings.

Have a look through the options below. And if you are not sure what would suit your home, just ask — we will explain the differences and help you choose.

Everyday casement windows

Practical, reliable windows that suit most homes, with plenty of choice in materials, colours and opening arrangements.

Standard casement white upvc window Admiral windows installation
Casement Windows

A popular and straightforward choice for traditional and modern homes. Casement windows are easy to use, easy to look after and available in a wide range of styles and finishes.

Light grey uPVC Flush Casment windows.jpg
Flush Casement Windows

The opening part of the window sits neatly within the outer frame, giving it a cleaner, more traditional appearance.

Traditional and heritage-style windows

These styles are a good choice for older homes, cottages and properties where keeping the original character matters.

They keep the traditional appearance people want, while still giving you the comfort, security and energy efficiency expected from a modern window.

Timberlook flush casement window
Timberlook Flush Windows

Flush uPVC windows with slim proportions and traditional detailing, designed to look like timber without needing the same level of maintenance.

The Residence 9 upvc flush casement window
The Residence Collection

A premium range of flush uPVC windows with deeper frames, traditional styling and plenty of choice in colours, finishes and detailing.

White Vertical Slider .jpg
Sliding Sash Windows

A classic vertical-opening style that suits period homes and properties where keeping the original proportions and character is important.

Specialist shapes and window configurations

Practical options for particular rooms, unusual openings and parts of the property that need something a little different from a standard window.

These styles can help when you want easier cleaning, more ventilation, a feature window, or a solution for an opening that is not a standard rectangle.

Admiral%20Windows%20aluminium%20tilt%20turn%20window%20in%20black_edited.jpg
Tilt and Turn Windows

Tilt and turn windows can tilt inwards to let in fresh air or open fully when you need easier access for cleaning.

Admiral Windows Oxford Aluminium bay window ALUK straightened enhanced.jpg
Bay and Bow Windows

A good way to keep or create a feature at the front of the house while bringing in more light and a greater feeling of space.

Commercial aluminium window Admiral Windows Oxford.jpg
Arched and Shaped Windows

Made to fit curved, angled or unusual openings where an ordinary rectangular window simply will not do.

Choose the right material for your windows

Most of our window styles are available in uPVC, aluminium or timber. Each material has its own advantages, and the right choice will depend on the property, the look you want and how much maintenance you are happy to do.

We will explain the practical differences and help you choose what makes sense for your home and your budget.

White uPVC casement window with astragal bars fitted by Admiral Windows
uPVC windows

uPVC is a practical, low-maintenance choice and suits a wide range of homes. It is available in plenty of colours and finishes, including woodgrain effects and traditional flush styles.

Modern uPVC windows offer good insulation, security and value without needing regular painting.

Black aluminium window fitted by Admiral Windows in a brick wall
Aluminium windows

Aluminium is strong and slim, making it particularly well suited to larger panes of glass and more contemporary properties.

The narrower frames can let in more light, and the powder-coated finish is durable and available in a wide choice of colours.

Black timber sliding sash window fitted by Admiral Windows
Timber windows

Timber gives a natural appearance that works particularly well on period properties, listed buildings and homes where traditional materials matter.

It does require more care than uPVC or aluminium, but properly maintained timber windows can look beautiful and last for many years.

There is no single material that is right for every home. We will help you weigh up the appearance, performance, maintenance and cost before you decide.

Good windows still need to be fitted properly

A good window is only part of the job. It still needs to be measured properly, fitted carefully and finished off neatly.

Before anything is ordered, we survey the openings and check the details properly. That helps us make sure the windows are the right size, the right specification and suitable for the property.

When the fitting starts, we take care around the brickwork, plaster and existing finishes. We also make sure the windows open and close as they should, seal properly and are left looking tidy inside and out.

It is not the glamorous part of choosing new windows, but it is the part that makes the difference between windows that look good on the day and windows that continue to look good and work properly for years.

Proper survey and measuring​

We check the openings, access and fitting details before the windows are ordered.

Careful fitting and finishing​

The frames need to be level, secure, properly sealed and neatly finished.

A tidy job when we leave​

We take care in your home and clear away the installation mess when the work is complete.

Four-stage sequence showing Admiral Windows replacing a high-level shaped window, from the original window through removal and installation to the finished result

A high-level shaped window replacement by Admiral Windows, shown from the original window through removal and installation to the finished result.

Warmer, quieter and more secure

People replace their windows for all sorts of reasons. Some rooms feel cold, outside noise has become a nuisance, the frames are difficult to open, or the windows simply no longer suit the house.

The right windows, properly specified and fitted, can make a real difference to how comfortable and secure your home feels.

A warmer home

Modern double or triple glazing, insulated frames and properly sealed openings can help reduce heat loss and cold draughts.

The improvement will depend on the windows being replaced, the property and the specification you choose, so we will explain what is realistic rather than promise miracles.

Less outside noise

New windows can help reduce traffic, aircraft and general outside noise, particularly where the existing glass or seals are performing poorly.

For more demanding locations, we can discuss different glass specifications and other ways of improving sound reduction.

Better security

Modern window systems include secure locking points, strong frames and glazing designed to make forced entry more difficult.

We will help you choose a suitable level of security for the property rather than treating every home as though it needs the same specification.

Easier to live with

New windows should open, close and lock properly. They can also be easier to clean and need less maintenance, depending on the style and material you choose.

Sometimes those everyday improvements matter just as much as the technical figures.

Good windows should not only look right. They should make the home more comfortable, secure and straightforward to live in.

Repair or replace?

Not every troublesome window needs replacing.

A failed glass unit, stiff hinge, damaged handle or locking problem may be repairable. In other cases, the frames may be badly worn, poorly fitted or no longer giving you the comfort, security or appearance you want.

We will look at the condition of the window and explain the options honestly. If a sensible repair will do the job, we will say so. If replacement is the better long-term answer, we will explain why.

A repair may be enough

Repair may be worth considering when the frame is still sound but there is a problem with the glass, hinges, handles, locks or seals.

Our dedicated service department carries out window and door repairs across Oxfordshire.

Replacement may make more sense

Replacement may be the better option where the frames are badly deteriorated, the windows are repeatedly failing, or you want to improve the appearance, security or overall performance of the property.

We will help you weigh up the likely repair cost against the benefit of fitting new windows.

The aim is not to sell you more than you need. It is to help you make the right decision for the property.

What you can expect from Admiral

Admiral Windows has been fitting windows across Oxfordshire since 1986, but we know that being established for a long time is not enough on its own. What matters is how customers are treated from the first conversation to the final tidy-up — and afterwards, if they need us

We keep the process friendly, personal and straightforward. We listen to what you need, answer your questions and provide a clear quote without pressure.

No-pressure advice

We will visit, look at what is needed and talk through the options with you. There is no obligation and no hard sell — just clear answers and honest pricing.

A proper survey before manufacture

If you decide to go ahead, the job is surveyed and checked before the windows are made. That gives us the chance to confirm the measurements, specification and fitting details properly.

 1986

Established 1986

Serving homeowners across Oxfordshire for over 40 years.

Careful fitting in your home

Our experienced fitters protect the working area, use clean dust sheets and take care around your existing finishes. We also clear up properly when the work is finished.

Support after installation

Qualifying installations are registered through FENSA and covered by the Admiral 10-year insurance-backed guarantee. Our dedicated service team is also here if something needs attention afterwards.

TrustMark and 

Trading Standards approved

Independent reassurance about standards, service and business practices.

Admiral Windows and Conservatories is a Fensa registered company

FENSA registered

Qualifying installations are registered and certified through FENSA.

Admiral 10-year guarantee

Insurance-backed protection on qualifying installations.

What our customers say about their windows

These are a few comments from customers who chose Admiral for replacement windows in their homes.

★★★★★

Admiral have just replaced all the windows in my cottage and I’m really delighted… The workmanship and the quality of the materials are first class and look fabulous.

Marie Bradley

Google review

★★★★★

We had our new windows in this week… They were extremely professional and very friendly. The communication from start to finish was brilliant… great attention to detail.

Tom Evans

Google review

★★★★★

“They managed to fit tricky windows very nicely… efficient, tidy and polite.”

Alexander Marfin

Google review

Replacement windows across Oxfordshire and surrounding areas

Admiral Windows is based in Oxfordshire and has been fitting windows in local homes since 1986.

Our regular residential service area covers Oxford, Oxfordshire and selected surrounding areas, including parts of Buckinghamshire, Berkshire, Wiltshire, Northamptonshire and Hertfordshire.

We regularly work across postcode areas covering Oxford, Milton Keynes, Reading, Slough, Swindon, Brackley and Hemel Hempstead.For most residential work, we stay within our listed service area so we can provide proper surveys, careful fitting and reliable aftercare.

Areas we regularly cover

Oxford · Milton Keynes · Reading · Slough · Swindon · Brackley · Hemel Hempstead

And many towns and villages across the surrounding postcode areas.

Not sure whether we cover your area? Just get in touch — if we can help, we will.

White uPVC windows and a grey front door fitted by Admiral Windows on a stone house

Let’s talk about your windows

Whether you are replacing one troublesome window or planning a full set for the house, we are happy to talk through the options with you.

Tell us what you are looking for, and we will arrange a visit, answer your questions and provide a clear quote without pressure.

Just have a quick question?

No hard sell. Just honest advice from a local team that has been fitting windows since 1986.

Light grey replacement windows and front door fitted by Admiral Windows on a detached bungalow
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