How Much Does Double Glazing Cost?

Discover all the different factors that can affect how much double glazing cost, so you can consider what would be the best option for you.

Double glazing is a popular choice for homeowners looking to improve the energy efficiency, insulation, and security of their homes.

It involves the installation of two panes of glass with a sealed air gap between them, providing superior thermal and acoustic properties compared to single-pane windows.

Double glazing Cost can vary significantly depending on a range of factors, including the window size, frame material, glass type, and additional features.

However, the long-term benefits of double glazing, such as improved energy efficiency, noise reduction, and increased home value, often make it a worthwhile investment for many homeowners.

In addition to the financial benefits, double glazing also provides enhanced security and noise reduction, creating a more comfortable and peaceful living environment. Many homeowners also find that the installation of new double glazed windows can increase the overall value of their property, making it a smart investment for those planning to sell in the future.

Of course, the decision to invest in double glazing comes down to your individual needs and preferences.

How Much Does Double Glazing Cost?

The average double glazing cost in the UK can range from £300 to £1,000 per window, depending on the factors mentioned above. However, it’s important to note that this is just a general estimate, and the actual cost can vary significantly based on the specific requirements of the project.

Typical Cost Ranges for Double Glazing

Window Type	Average Cost Range
uPVC Double Glazing	£300 – £700 per window
Aluminium Double Glazing	£500 – £900 per window
Timber Double Glazing	£600 – £1,000 per window

It’s worth noting that the double glazing cost can also be influenced by the size and complexity of the project. Larger homes or properties with more windows will generally have a higher overall cost, but the cost per window may be lower due to economies of scale.

Thinking About New Double-Glazed Windows?

DOUBLE GLAZING

Is It Worth Getting Double Glazing?

The decision to invest in double glazing often comes down to a cost-benefit analysis. While the initial cost of installation may be significant, the long-term benefits can make it a worthwhile investment for many homeowners.

Energy Efficiency

Double-glazed windows can significantly improve the insulation of a home, reducing heat loss and lowering energy bills. This can lead to substantial savings on heating and cooling costs over time.

Noise Reduction

The air gap between the two panes of glass in double-glazed windows helps to reduce the transmission of external noise, creating a more peaceful and comfortable living environment.

Increased Home Value

Well-maintained double glazing can be a valuable selling point, potentially increasing the resale value of a property.

Reduced Condensation

Double glazing can help to prevent the buildup of condensation on windows, which can lead to the growth of mold and mildew.

What should your quote for double glazing include?

A full technical survey with drawings
Full product details of size, style, colour etc.
The number of windows
The window energy rating (WER) for the glass
Any additional features, such as handles and locks
Does it include external window sills?
Disposal of your old windows
Warranties for installation

How the window frame style affects the average cost of double glazing

Casement windows

This is the standard style of window that has been fitted in the UK for hundreds of years. Casement windows open on a side hinge with either one pane opening or a pair.

The average double glazing cost for a white uPVC casement window ranges between £600 to 1,800 depending on size, glazing design and how many are being replaced in the property.

Sash windows

A stunning window that is visually pleasant and may raise a home’s value significantly. Two framed panels of a sash window glide up and down over one another.

Sash windows are a requirement for many listed structures, and they are most frequently found in period homes and other locations in London.

A sash window typically costs 50% more to double glaze than a casement window.

Tilt and turn windows

Because the tilt and turn window allows you to safely leave your uPVC or aluminum windows open for ventilation while keeping them fully secured, it has become a very popular type.

Double glazed tilt and turn windows typically cost twenty-five percent more than casement windows.

Bay windows

You need three windows instead of one because Bay and Bow windows project out from the room.

In addition to providing your living area with additional room and plenty of light, a bay window offers you expansive views of your home.

A double-glazed bay window might set you back as much as 150% more than a casement window.

Types of window Style

Casement Windows →

Our most energy-efficient window with highly-secure locking.

Bay Windows →

Add a sense of space and light with panoramic views.

Sash Windows →

Traditional styling in smooth or woodgrain finish.

Tilt & Turn Windows →

Easy cleaning and tilt for ventilation without compromising security.

How the Window Material Affects the Average Double Glazing Cost

In addition to the window frame style, the type of glass used in the double glazing can also impact the cost. Here’s a breakdown of how different glass options can affect the price:

Window size and dimensions
Glass thickness and type (e.g., laminated, tempered)
Number of glass panes
Frame material (e.g., vinyl, wood, aluminum)
Additional soundproofing features (e.g., acoustic gaskets, specialized sealants)
Installation costs

Standard Double Glazing: This is the most basic and cost-effective type of double glazing, typically consisting of two panes of standard float glass with an air gap in between.

Low-E (Low-Emissivity) Glass: Low-E glass is coated with a thin, invisible layer of metal or metal oxide, which helps to reflect heat back into the room, improving the window’s insulation properties.

Argon-Filled Glass: Argon-filled double glazing, where the gap between the panes is filled with argon gas, can provide even better insulation.

Tinted or Reflective Glass: Tinted or reflective glass can help to reduce glare and solar heat gain, but it comes at a higher price point,

When Should I Replace My Double Glazing?

The lifespan of double glazing can vary, but most well-installed and maintained units can last between 10 and 20 years. However, there are several signs that it may be time to consider replacing your double glazing:

Fogging or Condensation

If you notice condensation or fogging between the panes of glass, it could be a sign that the seal has been compromised, allowing air to enter and reducing the insulation properties of the window.

Difficulty Opening or Closing

If the windows become increasingly difficult to open or close, it may be an indication that the frame or mechanisms have deteriorated over time.

Drafts or Heat Loss

If you notice an increase in drafts or heat loss around the windows, it could be a sign that the double glazing is no longer providing the level of insulation it once did.

Visible Damage

Any visible damage to the frames, seals, or glass panes should be addressed, as it can compromise the overall performance and security of the windows.