20+ Years Experience
Specialist Double Glazing
Double glazing is a necessary part of having a well-insulated home, and that makes them a major market worth looking into. However, for many people, it is not always clear where to buy double glazed windows – let alone who to trust with installing them.
We can provide a huge range of specialists glazed windows, offering a range of double glazed windows alongside a variety of double-glazing services in December 2024.
At Double Glazed Windows, we understand how important our namesake is. Whether you are getting new windows or double-glazing existing windows, they are a core part of insulating your home and keeping heating bills low.
We can provide some of the best double glazed windows on the market, aiming for quality in every part of the windows we produce.
Having worked with countless clients in the past, we have been able to keep each one’s home warmer while giving them the added peace of low-maintenance double glazed windows that they can rely on.
We have over 10 years of experience in the double glazed glass industry, providing various double glazed window products to clients from all across the UK. We aim to surpass British standards wherever possible, making sure that each client’s new windows are perfect for their needs.
Our work has earned us a lot of positive feedback from our clients, as well as plenty of official and professional certifications. From our double glazed windows themselves to our double glazing installation process, we can boast professional quality in everything we do.
Double glazed windows can come in a range of material types. When you are looking for the right material, choose carefully because each one can influence so many factors about how your windows provide insulation and block outside noise.
uPVC is a very popular choice for double glazed windows. Not only are they very strong, low maintenance and extremely secure, but they are also very long-lasting, so you do not need to worry about them falling apart.
uPVC double glazed windows have improved since they first came onto the market. They still feature a traditional toughened glass, a double glazed construction and a uPVC frame, but they also now have a variety of colours and finishes available to suit your home.
The low price of uPVC windows makes them an ideal option for people with a practical mindset. They are also generally designed to be double glazed from the get-go, meaning you do not have to upgrade from single glazing.
uPVC Pros
Designed with double glazing in mind.
Excellent durability.
Highly weather resistant.
Low maintenance.
Environmentally friendly.
Cheaper than other options.
Limited aesthetic options.
A cheap option that does not really stand out.
Aluminium windows are usually used for their more contemporary look but tend to be similar to uPVC windows in many ways. Aluminium windows are also more expensive, but they make up for this cost by having an even longer lifespan than uPVC does.
While this makes them slightly less affordable, the trade-off can often be worth it. Modern aluminium windows are also just as good with energy efficiency as uPVC has always historically been, although aluminium still is not as good at blocking sound if you want the maximum possible privacy.
If you care about energy bills, then either option is ideal for any home. They are similar enough that it is a good idea to choose double-glazed units based on their aesthetics since you will more or less get the same benefits from either, with only a few minor differences here and there.
Durable.
Longer lasting than many other materials.
Offers a contemporary style.
Just as insulated as uPVC.
Very similar to uPVC windows.
More expensive than uPVC.
Slightly flawed when it comes to blocking sound.
Timber windows are one of the best ways to add some fashionable style to your home. Timber double glazed windows are charming and attractive and can work in almost any kind of home – especially those that have been decorated to aim for a very rustic aesthetic.
Period properties aside, timber looks distinctive and does a very good job of being a window frame under most circumstances. Timber is surprisingly good at managing heat, since it is a bad thermal conductor, and it looks great in almost any room or windowed space.
If sourced sustainably, the wood is also sometimes able to absorb carbon from the air in your home. Either way, though, your wood can last a long time with the right treatment and maintenance, making it far more durable than you might first expect.
Very appealing aesthetic look.
Ideal for almost any home.
Very energy efficient.
Can sometimes help remove carbon from the air.
More durable than you might expect a wooden window to be.
Extremely costly compared to other options.
Can expand and warp if not maintained properly.
Can only really look like wood unless covered with another material.
When it comes to double glazed windows, there are a lot of different options to consider. Materials aside, windows can be designed in a range of ways and offer their own unique benefits and drawbacks.
This means that you will often want to choose your replacement windows carefully. Sometimes, it is a good idea to turn to a different style of window replacement for a certain beneficial reason or to make the whole process easier if you are looking for a faster replacement process.
Casement windows open outwards and are hung from hinges on the top, bottom, or side of the frame. This is meant to keep your home warm while also making it easy to ventilate a room as needed.
Casement windows are incredibly versatile and are some of the most popular window types in the UK. They are simple enough to be highly customisable, with many different homeowners getting bespoke or specially designed casement windows for their homes.
Available in all major material types.
Insulated frames that make their energy efficiency better.
Wide opening for easy ventilation.
Easily made bespoke for custom orders in terms of both size and colour options.
While a regular casement window is lipped, flush casement windows are flat against the wall. This makes them look sleek without actually changing much about their design, meaning that you are getting quality windows in a slightly slimmer shape and installation method.
This means that most of the advantages of casement windows still apply, only with slightly slimmer window frames.
Streamlined shape.
Well-insulated.
Easy to install as new windows.
Flexible enough for countless material and colour combinations.
Bay windows are actually several window pieces arranged in an angular bay that sticks out of the wall. This is usually one or more big windows framed by smaller windows at the sides and top that open outwards.
These require extra building work to set up since the wall needs to be built for them if it is not already present. However, they offer amazing style and can completely change the feel of a room, while also allowing more natural light in from multiple angles.
Appealing shape and style.
Multiple windows allow for more natural light.
More ways to customise the glass (staining some but not others, etc.).
Unobtrusive opening windows.
Adds slightly more space to the room it is built in.
Tilt and turn windows are like casement windows with larger frames and can be opened in multiple ways. This usually means having them open inwards, either cracking open vertically (usually for ventilation) or swinging fully open horizontally.
These effectively give you two different styles of window opening in one, making them an excellent choice for spaces where you can’t decide between either. In general, they are quite popular on second storeys and above, where the full opening is not as much of a security concern.
Multiple ways to open the window.
Available in a range of material options to fit with any home.
Usually pre-manufactured with safety double glazing and/or insulation.
Easy to mount.
Cottage window styles are a more “traditional” type, also known as Tudor or Georgian windows in some cases. Rather than being single glass sheets, they have bars across the middle to split the glass into smaller squares – a design that most people are probably familiar with.
These are more secure overall since the holes are not big enough to squeeze through if broken, and they boast plenty of energy efficiency with double-glazing. Their simple design means that they can also come in a range of colour and material choices.
Extra security.
A simple but attractive traditional design.
A more generalised type that can often be merged with others (such as cottage casement windows).
Relatively cheap, especially compared to more complex window types.
Sash windows are your classic sliding window. One of the panels (usually the bottom one, but not always) slides over the other to open the window, moving vertically to provide a full, unobtrusive view of the outside world as well as complete ventilation.
These are old but still surprisingly stylish, and the vertical sliding design makes them one of the best options for people who do not want their windows swinging in either direction. They are fairly straightforward, making them more customisable than most other choices.
Simple vertically sliding design.
Effective for general ventilation purposes.
Double glazed windows are a major part of keeping your home warm, but you still want to remain within your own budget. This often means that you need to consider how much replacement windows will cost, especially if you can’t get your current single-glazed windows “upgraded” to double glazing.
But how much do double glazed windows cost, and what impacts the overall cost you should expect to pay – whether you buy in-store or online?
In general, it is easier to measure the cost of double glazed windows based on sets of windows rather than individually.
For example, getting 8 uPVC double glazed windows and 2 uPVC double glazed doors will cost around £4,000-£5,000. However, getting 20 double glazed windows and 2 doors will bump that price up by at least another £3,000, for a total of around £8,000.
Getting double glazing done to existing windows will usually cost something around £500 for each window or door, but that is a very vague average. Window replacement is more consistent since swapping single glazed windows for double glazed windows gives you a more direct cost to work with.
There is a range of factors that influence double glazing costs, whether that is double-glazing old windows or getting brand new double glazed windows. This includes:
The more windows you get, the more you need to expect to pay for them. This means that larger projects naturally require a larger budget – a whole-house window replacement will be far more expensive than just doing a single room, even if you are getting the same uPVC windows throughout.
When you are looking at material, choose an option that suits your budget. Remember that you will usually want the same material for all windows, but doing this with wooden windows is far more expensive than replacement uPVC windows would be. The material your new windows are made of will play a huge part in the overall cost.
The type of window replacement you choose will also matter. Dual-turn windows are more complex than a flat glass pane, so you should expect higher costs. Simpler windows, like a streamlined flush casement window, are going to cost less overall, so you will want to choose the right window frame and type for your budget.
Remember that this also depends on the material. A wooden window in the style of a casement window may still be cheaper than a bay window made with uPVC. Your replacement windows may need to be a balance between design and material.
The glass type and quality matter, too. A high-quality glass pane will have a higher price tag than a lower-quality pane, but sometimes the glass panes are not too much of a concern. Think about how the different glass types will influence external noise pollution, energy-efficient glass design, and any panoramic views you are planning to get with an impressive bay window.
The locking system on your window is an important part of the cost. This is directly related to the window handles, so a more secure lock and set of window handles will usually fetch a higher cost overall. While this is not always the case, the more secure a lock is, the more you will usually have to end up paying for it – and paying extra for security can sometimes be the right move.
If you are not installing replacement windows yourself, then installing new glazed windows (or double-glazing old windows) requires that a specialist do it. If it is hard for them to reach your property, then the complexity of the task itself may lead to higher prices overall.
Having energy-efficient windows is a huge part of why people get double glazing in the first place. Double-glazing companies like us understand that energy efficiency is important – when it comes to energy-saving, trust certain materials and designs over others. For example, getting new windows that are energy-efficient may cost more in the short-term but lead to better savings long-term.
Even without the energy efficiency angle, having excellent thermal insulation means less heat loss and a better energy rating for your property. With a good energy rating and better heat loss comes lower energy bills, making double-glazing an important thing to buy – even if it means spending more now for better heat loss control later.
Different materials handle noise pollution in different ways. If you are constantly disturbed by background sounds or worry about your own privacy, then windows with thicker window frames or better secondary glazing can be a worthwhile purchase.
Whether you buy online, in-store or through a contractor, your windows generally have to be delivered. This delivery cost can vary based on how heavy the windows are, how fragile the panes are, and how many you are getting. For example, wooden windows may cost more to deliver since the frames of wooden windows are heavier than other options.
Like many other parts of the double glazing marking, a complex window is going to cost more overall. The more trouble it will be to manufacture, deliver and install a window, the more you should expect to pay for the process.
Understanding the difference between double or triple glazing is important. But is one better than the other, and what is the difference?
Double glazing uses two panes of glass with a gap in between. These reduce the thermal transmission of the heat passing through, keeping the cold out and the warmth in.
Double-glazing relies mostly on the frame to keep noise out, something that varies with your material choices.
A good set of double-pane windows can let in more light while keeping the windows themselves safe from intrusion. Certain designs are far more secure than others.
Due to only using two glass panes, double glazing is relatively slim and easy to install.
With a proper low e glass pane, double-glazing can be more than enough to keep your home warm.
Triple glazing uses the same design but with three panes of glass instead of two.
Triple glazed windows provide plenty of noise reduction, but the middle sheet can actually increase sound vibrations. This can actually make triple glazed windows worse at managing sound.
The third sheet in triple glazed windows makes them slightly better at preventing intruders, although you will naturally want a good lock alongside it. With a strong enough object, the window could be smashed open anyway.
Triple glazed windows are larger due to their third pane, which can make them slightly bulkier in places where you do not want a deep window. This may require new frames if you are replacing an old window with triple-glazing.
Triple-glazing is great for retaining heat, with the second gap doubling heat retention on paper. Of course, this depends on the quality of the triple glazing and any other sources of heat loss in the room.
While triple glazing may be a good alternative in certain cases, double glazing is still the most popular option for a good set of reasons.
Secondary glazing is much cheaper than triple glazing. Both simple uPVC casement windows and complex French windows can get secondary glazing easily.
Double glazing is ideal for retaining heat without spending too much money, making the process even cheaper alongside a uPVC window frame.
Secondary glazing does not make windows or doors much thicker, meaning that it can work well in period properties, roof windows, and any other doors or windows you choose. This even means specialised French windows with unique paint colours that you do not want to damage, such as Chartwell Green.
These quick window FAQs come from real questions we have been asked. If these window FAQs do not answer your question, contact us for a more direct response.
Doors can get any kind of glazing as long as the frames of the doors are deep enough.
Double glazing in windows and doors is mostly meant to keep heat in and save money on energy bills for heating.
Double glazing is a must-have on any doors and windows that do not have it. Some people even double-glaze interior doors for better thermal performance.
Installing double glazing can have a massively varying cost depending on a huge range of factors. Simple glazing on uPVC window frames and doors will be relatively cheap but not nearly as cheap on complex wooden French windows or something with entirely bespoke frames.
Double glazed panes allow a house to retain far more heat while also keeping the cold out. However, this only works properly if all of the panes in a room are glazed in a similar way, leaving no real escape routes for the heat inside.
Some of the manufacturers we use include:
If you are looking to get extra glazing done on your windows and doors, then contact us to learn more about what we can offer. Our experts are well-equipped to handle any kind of doors and windows, offering our full arsenal of tools and materials to make sure that your project gets done right.
We understand how important having properly glazed doors and windows can be, and we make sure to offer each client exactly what they are looking for in their glazing. Get in touch if you want to know more about what we can provide.
Make sure you contact us today for a number of great double glazed windows.
We absolutely love the service provided. Their approach is really friendly but professional. We went out to five different companies and found Double Glazed Windows to be value for money and their service was by far the best. Thank you for your really awesome work, we will definitely be returning!
Billy FoxWe have used Double Glazed Windows for many years as they are certainly the best in the UK. The attention to detail and professional setup is what makes this company our go-to company for all our work. I highly recommend the team for the immense work - we highly recommend them!
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