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How Much Does uPVC Double Glazing Cost

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The prices for double glazing costs around £300 to £400, and sometimes much higher. It’s no wonder that homeowners across the country are trying to find the best deal possible.

However, new UPVC windows can have an expensive glazing cost if not done correctly. With such a sizable amount of work to be done, you’re going to want to try and get it right the first time around, without the risk of problems, issues, and reinstallations having to take place.

But what factors actually go into the final cost of double glazed windows? How can you customise your experience to find the best price? How can you find the best deal possible?

Today, we’re going to talk about everything you need to know when it comes to new double glazing. This includes how to choose the best type of double glazed windows for you, and the cost of double glazing. We’ll ensure your experience is the best it can possibly be.

Why Choose a uPVC Double Glazing Option?

uPVC window

So, why double glazing?

Double glazing has taken the world by storm over the last few decades for many reasons, but it’s also known as being one of the priciest home improvement projects you can undertake. So, why would you buy it, and is it worth the time and money?

First things first – double glazing can typically help your property retain 10% of the heat of your home. This means that you don’t need to use so much heating to keep your house warm. This is essential during the winter months.

It doesn’t matter what kind of central heating you use, whether it’s oil, gas, electric, or even fire – you’ll be using less fuel, and you’ll save a ton of money in the long term.

By “long-term,” we mean over 25 years. This is how long typical double glazing windows hold their energy efficiency rating. When you think about how much money you’ll save over a quarter of a century on fuel bills, suddenly, the initial double glazing costs seem really small.

While the energy efficiency rating of double glazing is by far the most sought-after benefit, it’s not the only one. Due to the thickness of double glazing, this kind of window also adds an extra layer (literally) of security to your home.

Of course, there’s no price too high when it comes to the safety and security of your family and your possessions, which is why double glass glazing is a great home improvement project you should be thinking about.

With this in mind, some home insurance providers will even give you a small discount on the cost of double glazing if modern double glazing has been installed.

The 8 Main Types of Double Glazing – Double Glazing Costs

What makes double glass glazing so special is also the fact that it comes in many different shapes and styles. There’s not just one size fits all, but rather different varieties that you can choose to suit your personal preference.

The type of double glazing you choose will determine the cost of your double glazing premium, plus the cost of the installation, as well as what benefits you’ll receive.

Let’s go into them in detail.

UPVC White Casement

White casement window

By far, the most popular kind of double glazing, the UPVC white casement window is somewhat stylish and modern, which makes it a great choice for the majority of houses and properties.

Most casement windows come with hinges that allow fresh air in on the summer days, and most casement windows will allow you to open either inwards and outward, so you can have the windows that work for you.

The security features of casement windows come in the form of only being able to open to a certain degree, which means people won’t have the ability just to jump up and climb into your window while it’s open.

However, there are plenty of different styles of a casement window, due to the frames, hinges, and locks available, so you should be able to have windows that suit what you’re looking for.

How much does double glazing in the traditional white UPVC average cost?

Just ask your casement window supplier and installer to see what they have available. Average new window prices cost around £200 to £400, depending on how many openings you have on each window and what size UPVC casement windows you opt for.

French uPVC White Casement

Fairly similar to the UPVC casement windows above, French windows tend to be the expensive alternative, but offer a slightly different experience.

The biggest difference with French UPVC windows is the fact that both sides of the windows can swing open, either inwards or outwards, which aim to give the highest capacity of ventilation compared with any other glass window type.

There’s also no supporting bar across the middle of the glass window, which means you can have a nice clear view of the outside world without any obstructions.

These new windows cost around 60% more than traditional UPVC casement windows that have a single opening. Still, they do offer a more luxurious experience. Glass windows cost around £450 and £580.

Tilt/Turn Windows

The tilt/turn double glazed window types are becoming very popular throughout the UK, simply because they tick all the boxes. They’re clean, stylish, well-designed, cost-effective in all benefits, and allow for the maximum degree of ventilation.

Whether you want the ability to flood your home with fresh air when it’s called for, or you just want some great-looking glass windows, these could be for you.

Tilt/turn white UPVC windows work by offering a special handle on the side and the top of the window frame. These handles allow you to turn the window both inwards or outwards, depending on what you’re after. You can pretty much set them to any degree, meaning you can adjust the amount of ventilation you’re after.

New tilt/turn windows tend to sit around the 50% more expensive mark (new window prices cost around £405 to £540) compared with traditional white UPVC windows that have a single opening. When it comes to asking how much does double glazing cost, this is the average price you’ll be looking at.

Sash Windows

 Sahs windows

If you look at the majority of houses in the UK and you had to define the most common type of window, it’s going to be sash. Look at any kind of historical house, like a Georgian townhouse, and you’ll see sash windows.

Sash windows are typically made with two layers of double glazing; one layer at the top, and one layer at the bottom. These windows are made in two parts and can be slid open using the tramlines built into the frames.

This way, you can control the amount of ventilation by opening and closing your new windows, however much you want. With a single support beam across the middle, you’ll have a really nice level of visibility.

What does a sashed glazing cost?

Sash double glazed windows normally cost double than a single casement window – windows cost around £530 to £850. But then again, there are no double glazed windows like this; consider adding a sash window if you’re redoing an older property.

Double Hung Sash UPVC Windows

In addition to glass sash windows, you can get double-hung sash windows. These glass windows are practically the same in every way, except both the top and bottom frame of the window can be moved however you like.

This means you have absolute control over ventilation and can open the windows however much you want them. An added security feature means you can lower the top window, instead of the bottom one, allowing you to have an extra layer of security that you simply don’t get with traditional sash glass windows.

If you have toddlers or kids and want to prevent them from climbing out, which is easy with normal sash windows, then definitely consider this type. The average cost of double glass glazing with double-hung sash windows is around the same price, perhaps a little more depending on the design. If you opt for a bespoke design, the question of how much double glazing costs will give a much higher answer.

Bay Windows

Bay Windows

Bay windows are typical of British 19th Century houses, grand houses, larger properties, and those with large terraces. They are great if you’re looking to add a bit of extra space to the rooms in your house, and desire a glorious view of the outside world.

Usually, glass bay windows, unlike sash windows, are made up of three to five bay windows connected side by side. They angle outwards and then back in, with the most extended part in the centre.

You can expect the price and cost of double glazing with bay windows to be around £1,000 to £2,205, depending on how many window sections you want, the cost per sheet, and the average cost and prices of the labour involved.

Bow UPVC Windows

A slight variant on bay window setups, bow windows have what’s known as compass windows, which include up to eight panels that are positioned and fixed next to each other. It’s a large, grand, sweeping window, usually at the back of your property.

This creates a beautiful turret design, which, for most people, is simply unlike any other window design you’ve ever seen.

As there are so many parts to each window, and depending on how complex the design and installation process is, bow windows tend to be the most expensive. They typically have an average cost of £1,080 to £2,100 for the largest bow window with five sections.

Don’t forget, when choosing the type of windows you want, you need to think about the double glazing cost itself, the type of windows, such as a sash window or a casement window, the price of labour, and any tax prices you need to pay on top.

Which Type of New UPVC New Double Glazing is Best for You?

Double glazing windows

Now that you’ve seen all the different types of double glazed windows out there – and yes, we know, there’s a lot – you may be left scratching your head, thinking what type of double glazing is the best for you.

There’s a lot of things to think about, such as what your taste is, and what kind of budget you have to spend. Just acknowledging what design is best for your property is a challenge.

Let’s help with that.

Think about how your windows make you feel now. Do you find yourself getting hot and stuffy during the summer months and wish you could let more air in? If this is the case, you may want a high ventilation window, like a sash window.

However, if you have small children or pets that run around and hang out by the white UPVC windows, this could be dangerous. They could climb or fall out, so getting double-hung sash windows could be ideal for maximising both ventilation and security.

If you don’t want to spend that much, you can always look into more affordable options, such as tilt/turn windows, as these offer a similar level of safety.

However, if you’ve spent a lot of money on your garden, have no children living with you, and want to enjoy grand views of your property, a bay or bow window would be perfect, and will certainly change the way you see and enjoy your property forever.

It’s also important to think about the law. Due to energy efficiency laws in the UK, you now cannot install a UPVC window under the C energy efficiency rating. You need to make sure any new installations of windows are compliant with the government’s building regulations and laws.

This is not something that should discourage you. These laws will help you reduce your electricity, gas and heating bills that will save you a lot of money over the years, and will help the planet become more sustainable and green. How much does double glazing cost when you factor in the savings you’ll make here? Not a whole lot.

Ideally, you’ll want UPVC windows that sit as close to the A++ rating as possible, but these are typically expensive, so make sure you’re working to your budget.

The more energy efficiency UPVC windows you have, the more money you’ll save, the warmer your home will be, and the happier your family and wallets are!

Choosing New Windows and Frames

Man inspecting PVC frames

Another key factor to think about when choosing which UPVC double glazed windows are best for you comes in two parts; the windows themselves and the frames said windows sit in.

If you choose a thick kind of UPVC double glazing, then naturally, you’re going to need thicker frames. Averagely, these frames will sit between the sizes of 14mm and 28mm.

There are three main materials used to make frames in the double glazing industry; uPVC, aluminium, and wood.

As the title of this guide suggests, the most popular material is uPVC, since this material is the most affordable, lightweight, easy to install, and is very easy to look after in terms of maintenance and keeping them clean from day to day.

Wooden frames can rot over time and need to be treated. Aluminium frames can easily chip paint and need to be maintained in this way constantly. When you consider this, it’s easy to see why many people opt for uPVC.

That being said, white uPVC is not as attractive as their wooden and aluminium counterparts. We know there are many of you reading this that won’t have really experienced aluminium frames before, and that’s simply because they’re not that common. They’re often used in bespoke modern houses and commercial properties.

New windows with wooden frames are very popular with older houses, or modern houses opting for a more elegant style and design. There’s no denying that wooden frames look stunning, regardless of whether they’re left plain and natural, or painted and coated especially.

It all comes down to your budget and personal preference. If you’re looking for an affordable option, a quick fix for double glazing, or you just don’t care that much, white UPVC is the way to go.

However, if you’re investing a lot of money into your property, or want to take the aesthetic of your home to the next level, it’s worth considering the wood or aluminium alternatives.

Why Not Choose UPVC Casement Triple Glazing? – Which is Best?

Triple glazing does exist and is currently widely used in colder places of the world, such as Nordic countries. It’s very effective with all the energy-efficient benefits we’ve already spoken about. However, the triple glazing alternative hasn’t been implemented much in the UK.

But should you be thinking about it?

Triple glazing has a ton of heat-trapping abilities and can keep your home warm. If you live a cold part of the UK, it may be something you want to consider.

With UPVC triple glazing, the window panes are filled with krypton gas rather than argon gas. Then the frames themselves have added insulation, meaning houses with triple glazing are up to 18 degrees warmer than houses with single glazing.

That’s 2 to 7 degrees more than windows with double glazing, according to one study. While this industry is expanding rapidly, and there’s even talk of quadruple glazing in the works, the truth is that the UK is just too warm for triple glazing.

The winter months aren’t that cold in most areas, and with the planet temperate rising year on year, the need for triple glazing in warmer countries like the UK just isn’t worth it.

However, if you do live in a colder part of the UK, such as a very northern part of Scotland, and you’ve always had a problem with heating your home, then it could worth thinking about. The average cost, however, is a lot more than the cost of double glazing.

Replacing Existing UPVC Double Glazing

Open double glaze window

Whether you’re just installing new double glazing windows or already have double glazed windows in your home, at some point down the line, you’re going to need to think about replacing your windows.

Over time, the gas in UPVC double-glazed windows is not as energy efficient as it used to be. You’ll need to replace them to keep receiving the same benefits.

Fortunately, double glazing window installations tend to last between 20 and 25 years before you need any kind of replacement, so you won’t have to worry about it until then. With this in mind, most manufacturers will give you a guarantee lasting up to ten years, just to ensure you’re covered.

Some of the problems you’ll be covered against include issues like leaks, chips, draughts, pane damage, and the sorts.

Can Every House Have Double Glazing?

In pretty much all situations, you should be able to have double glazed windows. This is because UPVC double glazing is a Permitted Development building regulation. As we spoke about above, these are the kinds of windows the UK government wants you to have.

However, not all properties can have double-glazed windows. If your property is listed or you have a home in a conservation area, the rules that govern your property may restrict you from making alterations, such as new windows. This may include installing double glazed windows.

If your house falls under this category, make sure you contact your local council to see what kind of alterations you can make and whether double glazing is feasible for you.

If not, you can stick with single glazed windows. Remember that single glazed windows have come a long way in the past few years, and will provide a much greater level of insulation than they used to – just not as much as double glazed windows.

Frequently Asked Double Glazing Questions

While we’ve tried to cover as much as possible throughout this guide, we hope we’ve covered the majority of what you need to know to make an educated decision as to what kind of double glazing windows you want.

However, to ensure your experience is as painless and seamless as possible, here are some of the most frequently asked questions.

Who Can Install My Double Glazing?

Double glazing window installer

While you could technically install your double glazing casement window yourself or you could get anyone else to install your window, this will be dependant on your ability to make home improvements. However, it would still be fully legal to do so.

While some kinds of home improvement require a certified and approved specialist, such as boiler maintenance, double glazing windows have no such accreditation. This means anyone can do it.

More often than not, however, you’ll want to have a contractor or manufacturer to complete the task on your behalf. Yes, this can add to the cost of double glazing improvements and may be great for prices, but it’s not always the best option to take.

While purchasing and installing the windows yourself could be a great way to save money, you need to think about how well you can complete the job and to what kind of quality.

If you opt for using a contractor or supplier, they’ll add an extra cost to your home improvement project. Still, the chances are you’ll get a guarantee or warranty with the installation.

You’ll know that if there are any problems with your windows, you’ll be able to get them sorted out with no expense to yourself, something you don’t get if you attempt to DIY the project.

If you’re looking for a qualified and certified installer, contractor, or workman, look for the following qualifications or accreditations;

  • Certification and Self-Assessment (CERTASS)
  • FairTrades/TrustMark
  • Glass and Glazing Federation (GGF)
  • The Fenestration Self-Assessment Scheme (FENSA)

It’s important to remember that installing double glazing is, usually, a two-person job. So it may not be wise or safe to install it on your own. If you don’t have experience installing double glazing and you don’t know what you’re doing, then it’s always going to be wisest to get the assistance of a professional.

Which is the Cheapest Double Glazing Companies?

While you may have seen a ton of advertisements on TV and the radio, or you’ve found plenty of people online that can supply and install your double glazing, you may be left wondering:

How do you find the best cost of double glazing possible?

Well, if you’re looking at a commercial company, such as one that advertises on TV or radio, these are going to be the most expensive options because they typically operate nationwide. They will have some of the best people in the industry working for them since they’ll only hire the top talent.

When you consider this and the fact that most double glazing cost salespeople will charge a 20% commission, the prices can quickly add up. When you then consider all the extras in addition to this, you may be facing a high premium that’s not suitable for your budget.

Ideally, to get the best price for double glazed windows, you’ll want to find a local double glazing business that can give you a better price. You’ll want to look for a company that has around ten years under their belt, so you know they’re reliable. Or ask around your social circles to see who has any recommendations.

Always consider that going cheap on double glazing could be a problem in the future. When it comes to selling your house, if someone sees you have cheap double glazing, this can lower the value of your home and may put people off buying altogether.

Double glazed prices will vary depending on the many factors we’ve spoken about above, such as whether you’re getting a casement window or another type. You can expect the double glazing cost range to be as follows:

Double Glazing cost:

  • Flat with 4-6 windows – cost between £1,500 to £2,700
  • Small house with 8-9 windows – cost between £3,250 – £4,900
  • Medium house with 10-12 windows – cost between £4,800 to £7,700
  • Large house with 15-18 windows – cost between £7,100 – £12,000

An essential thing to remember is that you should always look for several prices from potential double glazing installers and see what they’re offering. Get quotes from both nationwide and local double glazing suppliers to see what double glazing cost you’re expected to pay and what cost of double glazing they’re offering.

You never know when a nationwide supplier might be doing a deal! Don’t forget to tell them the number of windows they’re dealing with so you can get an accurate cost.

Then break down your choices by the quality of the window service (based on what they offer and the reviews they have), what certifications the company has, and what degree of customer service you’ll be entitled too. Always ask your window provider how much double glazing costs upfront, so you don’t come across hidden fees and prices.

From here, you can find the best installer for the best price, and you’ll be good to go!

Why are Double Glazing Window Prices So Expensive?

Open white pvc windows

A very valid question. If you’re looking at double glazing for the first time, the chances are you’re looking at some of the prices in shock, especially if you have a lot of windows that need replacing.

However, this is all because of quality. It’s important to remember that every aspect of the trade project, from the materials the windows are made of and how they are put together, plus how they are installed, will all depend on how much it costs.

The higher the level of quality of your double glazing, the more the home improvement is going to cost.

It’s also worth remembering that nearly every home is different and will have different requirements, needs, and sizes, which can also affect the final price.

When’s the Best Time to Replace my Double Glazing?

Since double glazing an entire house can be expensive, it’s worth looking for the optimal time to replace your windows. This way, you’re getting the maximum lifespan out of each, and only spending the money when you need to.

There are a few key signs you can look for, such as looking at them and seeing if there are any signs of damage or leaking. If your windows are cracked and chipped all over, the chances are, they’ll probably need replacing.

If your windows are hard to open and close, or the hinges and locks aren’t working properly, it might be time to replace them. Not just because you’re losing the energy efficiency benefits, but also because this can be a security risk.

If you’re going about your day and you find your home is colder than you think it should be, even if you’ve got a lot of heating on, it could be a sign your windows are past their peak.

The final thing to look out for is your furniture. As double glazed windows get older and older, they start to let in more UV rays that will fade your carpet and furniture. If you notice this happening, it might be time to replace your windows.

Does Double Glazing Save Energy?

Hand opening a window

In short, yes. We’ve spoken about this a little bit throughout the article, but just be clear, yes, double glazing windows actively lock heat into your property and stops it from going outside.

The more your window prices cost, the more effective they’ll be at stopping heat from escaping. This also is variable depending on the number of windows you have, since more windows mean more chances to trap escaping heat.

This makes it easier to maintain a warmer temperature throughout the house, which means you’ll need to use the radiators and heaters a lot less. This means you’ll spend less money on your energy bills and more money in your pocket.

How Does Double Glazing Work?

The majority of houses built in the modern-day use both an outer and an inner wall, also known as a leaf. The walls have a gap between them, which aims to keep heat in your home and stops it from escaping.

Within this gap, you may also find an actual insulation product. Double glazed windows work in very much the same way.

Most windows will have two layers of glass bound together in a frame. The gap between them contains argon gas. When the heat in your home reaches the double glazed window, it naturally looks for a conductor. Since there’s a vacuum of air between the glass instead of a conductor, it repels the heat, thus keeping it inside the house.

This also works to drown out any sound. It keeps out external sounds outside your house, such as the noise from a busy street or road, which is ideal if you’re living in a busy city or town.