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How much does double glazing cost?

The price you pay for double glazing will vary, double glazing costs will depend on a few factors, for example:

  • The type casement windows typically are the most common and cheapest with Sash windows being more .
  • The size The larger the window the more expensive it will be
  • The style In addition to the type of window there are other variables such as colour, handle type and type of finish.
Inside view of double glazed windows

Like many home improvements, the cost of double glazing varies massively and prices are dependent on the company you choose to supply and install your new windows.

Indeed shopping around certainly pays when it comes to finding the right double glazed windows for your property.

Recent comparison research has releveled the average prices for uPVC windows in 2024.

For a 200×200 uPVC double glazed window tends to be around £300 to £400 in 2024.

Of course where you live in the country and the size of company you contact will affect the price.

For example; if you are living in a small apartment, replacing your windows will cost in the region of £1,400 to £2,000 whereas if you are living in a 3 bedroom house you could expect a quote for replacement windows that is between £3,500 to £6,500.

uPVC window styleDouble glazing costs
Casement Window£300 to £400
Sash Window£600 to £800
Tilt and Turn Window£500 to £600
Dual turn window£550 to 650
Double glazing costs 200cm x 200cm window

There are many benefits that come hand in hand with double glazing windows and doors and although double glazing isn’t a cheap investment, in the long run you could indeed save you money.

Double glazing in renowned for saving you money by reducing energy bills. In fact you could retain up to 10% more heat in your home by purchasing new double glazing.

  • Warmer during the window months as above double glazing can help retain up to 10% more heat, therefore not relying on heating your home as much.
  • Reduced noise One of the main advantages of double glazing is that is can also significantly reduce outside noise by up to 60%!
  • Increase the value of your home investing in double glazing especially in older properties will help increase the value likewise it will help reduce condensation commonly found in old properties.

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  1. Doors and Frames
  2. Glass
  3. Window colours
  4. Quote hub

Most importantly you should always get a double glazing installer who is registered with either FENSA or Certass.

FENSA and Certass are government-authorised schemes that monitor building regulation compliance for replacement windows and doors

We have a dedicated page on finding a double glazing installer and what you should look for when deciding. Take me there

Subsequently if you don’t have the time or want to make sure you are getting quotes from reputable and vetted companies why not use our Quote Hub, its simple, quick and most importantly free!

What is double glazing?

A double glazed window uses two sheets of glass, which are strategically placed with a gap between them, in order to create an insulating barrier thus improving efficiency.

Double glazing is as a long-term investment as they will also improve the security of your property and sound proof a wide range of spaces.

This depends on the quality of window, materials used and the depth of cavity between the panes of glass.

This is why you should always do your research when looking at double glazing costs. However your windows should last at least 20 years.

You can make significant savings on your energy bills due to the thermal insulation double glazing provides!

In fact it is estimated by the Energy Saving Trust (EST) that if the whole of the UK invested in double glazing, they could collectively save £700 million in fuel bills (this pre-dates the recent energy bill increases).

You can also then add Solar PV to your property to maximize energy saving.

Energy rating sticker for double glazing

On one hand your windows should keep you warm and safe, but on the other they should be aesthetically pleasing.

So when it comes to buying you windows, there’s a lot to look out for, therefore the best windows and doors should allow you to enjoy the following benefits:

  • Allow a good amount of light into your home
  • Be aesthetically pleasing
  • Easy to maintain and clean
  • Add value to your property
  • Keep you draughts
  • Optimise security with multi-point locks and mechanisms
  • Have a high energy rating to reduce energy bills

Doors and frame material

These are the most common type of frame material in the UK, and are perfect for enhancing a modern home in a contemporary setting.

Available in a wide range of sizes, shapes and colours, this type of frame requires virtually no maintenance and are also secure and robust.

Embracing the very latest innovative technology, composite frames are designed to replicate 19th Century timber windows.

Similar to uPVC they require almost no maintenance. In fact some studies have even suggested composite windows could be 23-35% cheaper then uPVC over a 60 year period.

Timer frames for windows offer a classic and timeless appeal that can enhance the beauty of any home.

With their natural wood grain texture and rich hues, timber frames bring warmth, elegance, and a sense of authenticity to the overall aesthetic.

The versatility of timber frames allows them to seamlessly blend with various architectural styles, from traditional cottages to contemporary residences.

Beyond aesthetic appeal, timber frames have excellent insulating properties, helping to regulate temperature and improve energy efficiency.

While they do require regular maintenance to preserve their beauty and protect them from weathering. The charm and character that timber frames provide make them a popular choice for homeowners seeking a natural and sophisticated window option.

The aluminium frame material for windows have gained tremendous popularity in recent years, thanks to their sleek, modern, and minimalist appearance.

These frames offer a contemporary aesthetic that complements various architectural styles, from urban apartments to industrial-inspired homes.

Aluminium frames are known for their durability, strength, and resistance to corrosion, making them an excellent long-term investment.

Additionally, aluminium is a highly versatile material, allowing for slimline profiles that maximize the glass area, providing unobstructed views and ample natural light.

With their inherent strength, aluminium frames can accommodate larger window sizes, enabling impressive floor-to-ceiling windows or expansive glass panels.

Furthermore, aluminium frames require minimal maintenance and are available in a wide range of powder-coated finishes. This allows homeowners to customize the color and achieve the desired look for their windows.

4 different colored doors
House typeEstimated annual energy savings
Detached house£105-£110
3 bed Semi-detached house£75
Mid-terrace house£55
Detached bungalow£55
Mid-floor flat£35
Estimated savings uPVC (pre energy bill increase)

When considering the price difference between uPVC, timber, and aluminium frame materials for windows, several factors come into play.

uPVC frames tend to be the most cost-effective option, offering a budget-friendly solution without compromising on durability or energy efficiency.

They are low-maintenance and have good insulation properties, making them a popular choice for homeowners on a tighter budget.

On the other hand, timber frames typically come at a higher price point compared to uPVC.

The cost of UPVC windows for a typical 3-bedroom house can range from £3,000 to £6,000. Depending on factors such as size, style, and any additional features

The cost of timber frames can vary depending on the type of wood used, such as oak, mahogany, or pine, as well as the quality of craftsmanship.

Timber frames offer a natural, traditional aesthetic and can significantly enhance the charm and character of a home.

While timber frames require regular maintenance to protect them from weathering, their beauty and timeless appeal make them an attractive choice for those willing to invest more.

The cost of timber windows for a standard 3-bedroom house typically falls between £4,000 and £10,000. Varying based on factors such as size, style, and any additional features desired.

Aluminium frames generally fall between uPVC and timber in terms of pricing.

They are known for their strength, durability, and contemporary design.

While aluminium frames may have a higher initial cost compared to uPVC, they offer exceptional longevity, require minimal maintenance, and provide excellent thermal performance.

The versatility and sleek appearance of aluminium frames make them a favored option for modern and minimalist architectural styles.

For aluminium windows in a 3-bedroom house, expect prices ranging from £5,000 to £12,00. Influenced by factors like size, style, and additional features.


There are many different types of glass but common forms of glass range from decorative to clear and tinted glass.

Decorative glass, for example, will be utilised for windows and doors to create a stained glass effect, whilst laminated glass is favoured by shops and businesses due to its durability.

Glass is made available in single, double and triple layers, with the more layers of glass the greater the insulation capacity, with that being said double layers is the most popular (double glazing).

Recently sealed insulating glass has hit the market which is a type of glass that has insulating properties built into it thereby eliminating the need for multiple layers.

In fact manufactures claim its very good for energy efficiency thereby reducing heat loss through windows by about 90%.

  • Safety glass – complies with British Safety standard BS 6206. It is only fitted in ‘critical locations’ in which its required use is required by building regulations. It is categorised as Class A, B or C with class A usually being referred to as toughened glass.
  • Laminated glass – available across all classes and incorporates a central layer of toughened plastic in between two pieces of ordinary glass. The glass adheres to the plastic so that if broken will not break into shards. Used in shops and businesses and also homes as well.
  • Decorative glass – think your local church. Decorative glass can include stained glass that may use colour filed, or bevelled glass for more architectural effect. You can also get patterned or embossed glass in a range of patterns and textures.

Window and door colours

Colours are plenty available however you might find that your options available will differ depending on the product you chose and the company you go for. Most will be able to provide a brochure on what is available.

uPVC has a wide range of colours, in fact its a very large list. Below are some of the most common choices.

  • White
  • White Ash
  • Oak
  • Anthracite grey
  • Slate grey
  • Chartwell green
  • Asphalt
  • Anteak
  • Rosewood
  • Black
Casement window sizeColourAverage price
500 x 500mmwhite£140 to £160
500 x 500mmWood effect£155 to £175
1000 x 500mmwhite£160 to £172
1000 x 500mmWood effect£185 to £200
1000 x 1000mmwhite£200 to £230
1000 x 1000mmWood effect£220 to £250
1200 x 1200mmwhite£240 to £270
1200 x 1200Wood effect£270 to £300
White vs Wood effect uPVC window colour

When it comes to double glazing in the UK, homeowners are spoilt for choice.

Not only in terms of energy efficiency and security but also when it comes to aesthetics.

One of the significant factors to consider while selecting double glazing is the color options available.

The right color can enhance your home’s curb appeal, complement its architectural style, and express your personal taste.

White upvc bay window

White is the most popular color choice for double glazing in the UK. It offers a timeless, clean, and fresh appearance that suits almost any architectural style.

White double glazing provides a crisp, traditional look, and its versatility makes it an ideal choice..

Black double glazing has gained significant popularity in recent years due to its sleek and sophisticated appeal.

It can add a touch of elegance to contemporary homes and create a striking contrast against light-colored brickwork or rendered walls.

Black frames can also give a sense of depth to windows, enhancing their visual impact.

For those seeking a more traditional or rustic look, woodgrain finishes are an excellent choice.

These finishes mimic the appearance of real wood while offering the low maintenance benefits of uPVC or aluminum frames.

With a wide range of woodgrain options available, including oak, mahogany, and rosewood, you can the character of wood without the associated upkeep.

To infuse your home with a cozy and inviting ambiance, consider warm-toned double glazing.

Colors like cream, beige, or light brown can add a touch of warmth and blend well .

Warm-toned frames are particularly popular for cottages and properties with a traditional aesthetic.

Upgrading windows and doors on a conservatory can have a transformative impact. Enhancing both the aesthetics and functionality of the space.

By replacing old or outdated windows and doors, you can significantly improve energy efficiency, insulation, and security.

With a wide range of materials, styles, and finishes available, you can tailor the design to seamlessly integrate with your home’s architecture. Creating a harmonious flow between the conservatory and the rest of your property.

Whether you choose uPVC, timber, or aluminium frames, upgrading the windows and doors in your conservatory is a worthwhile investment that can greatly enhance your enjoyment of the space while adding value to your home.

Ai generated tiled conservatory roof

The cost of replacing a window in a conservatory versus a house can vary depending on several factors.

Generally, replacing a window in a conservatory tends to be more expensive than replacing a window in a standard house.

here are a few reasons for this price difference.

First, conservatory windows often have unique designs and shapes, which may require custom manufacturing or specialized installation techniques.

This customization adds to the overall cost compared to standard rectangular windows found in typical house structures.

Secondly, conservatory windows are typically larger in size compared to regular house windows.

Larger windows require more materials, including glass, frames, and hardware, resulting in higher costs.

Already upgraded your double glazing? Why stop there? Extend your investment in enhancing your property’s exterior by exploring fascias, soffits, and gutters. Integrating these components to your home not only adds a touch of elegance but also ensures optimal protection against the elements.

Upgrading your windows and doors on a conservatory could also be a consideration but going one step further and upgrading the roof to either a glass conservatory roof or a Tiled conservatory roof will give you an extra room for year-round use

If you are looking for information on just the glazed unit we have a dedicated page covering the product.

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How long does double glazing last?

The general consensus on double glazing’s lifespan is estimated to be anywhere between 20 and 35 years depending on the supplier and fitter.

How long does it take to replace double glazing?

On average, each window takes anything from 1 hour to 3 hours to install. The time it takes to install a window will be different depending on the size and type of window.

Does double glazing increase the value of my property?

Most prospective buyers will see double glazing as a deciding factor if they are in good condition and have a good energy rating.

A lot of people will be put off buying a property which has single glazing due to their energy inefficiency, the cost to replace and the increase change of damp issues in the property.

Are double glazed windows difficult to break into?

Double glazed windows are very difficult to break into and it take a lot of effort and creates a lot of noise. Burglars will be put off by double glazing as it attracts too much attention.

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