Double or Triple Glazing? Which Should You Choose?

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Don't let rising fuel costs keep you up at night! Tackle the cold and reduce your bills with the help of Triple Glazing Grants. These UK home improvement grants offer a solution to fuel poverty and encourage the adoption of energy-saving measures in homes. Imagine saving up to 30% on your annual energy expenses by switching to triple glazing. That's real money back in your pocket. Keep reading to learn the benefits of Triple Glazing vs Double Glazing and find out how you can take advantage of these grants today.

Find out if you are eligible for this double-glazing grant here.

Double Vs Triple Glazing: Which Should You Choose?

When renovating your house, you might struggle to choose between double or triple-glazed windows.

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When moving home or considering upgrading your windows from single glazing, you might wonder whether you should choose double or triple glazing.

It’s not just about the fact that double glazing includes two panes of glass, whereas triple glazing has three.

There are so many more benefits/disadvantages of both that you should consider before you choose either.

You should also think about the cost, how energy efficient they are and how they insulate your house.

To help you make your decision, this article will show you what each of them is, how they can benefit your home, how efficient they are, and the cost of each of them.

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Triple Glazing

But first, what are triple-glazed windows?

To put it simply, triple-glazed windows are modern windows designed to have good thermal efficiency to keep rising energy bills down.

They are insulated to prevent heat loss and keep noise out

The cavity between each pane is usually filled with either krypton, xenon or argon.

This creates a seal that reduces the draft and prevents heat loss throughout the home

So, what are some advantages and disadvantages that come with having triple glazed windows installed?

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Firstly, the pros:

• They offer excellent sound insulation - better than double glazing!
• High durability and lifespan (triple glazing can last around 30 years!)
• More secure against break-ins due to the added layer of glazing
• Produces a low U-value (More about 'U-values')
• They are extremely energy efficient and can help bring down the amount you spend on your energy bill.

Secondly, the cons:

• Installation can be more expensive than double glazing.
• A lot heavier than single or double glazing due to the added layer.
• It may not be necessary for the UK climate.

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Double Glazing

Secondly, what is double glazing?

A double-glazed window is made up of two panes of glass. These panes provide a barrier between the house and the outside.

The gap between the panes provides a good level of insulation, a feature that is great for those colder months.

Double glazing is found on most modern houses and is generally very reasonably priced.

People that upgrade from single glazing to double-glazing will start to notice the impact on their electricity bills as soon as they are installed.

Here are some pros and cons of installing double glazing:

Firstly, the pros:

• It can be cheaper than triple glazing (typical price estimates)
• They can reduce heat loss by up to 100%.
• They are the most popular choice for households across the country.
• Very good at keeping noise out of your home, making them ideal for homes situated in loud, busy, or built-up areas

Secondly, the cons:

• They are less energy-efficient than single or triple glazing.
• Double glazing is not as secure as triple glazing. The third pane adds an extra layer of strength.
• Unfortunately, they aren’t as long-lasting as triple glazing.

Which Deals Better With Condensation?

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This probably won’t come as a surprise, but a triple-glazed window tends to deal with condensation better.

This is because it has three panes – therefore will allow for less of a difference between the temperature inside and outside the house.

If you have double-glazed windows and notice a lot of condensation between the panes, we suggest triple glazing may be worth looking into.

Condensation can cause problems with the window frames and excessive moisture. Ideally, it is an issue that should be fixed as soon as possible.

If you don't have any issues with your existing windows, then it might not be worth changing them to triple-glazed ones.

Are Double Or Triple Glazed Windows More Energy Efficient?

When you are working out which type of window is better in terms of thermal transmittance, it’s essential to look for the ‘U-value’ measurement.

This industry standard is often used to compare a window's energy performance. If the U-value is low, the window has better energy efficiency.

It’s clear that as double glazing has two panes rather than three, it won’t retain as much heat.

Is it essential, however, for those living in the UK?

The answer to this is probably no, and it isn't necessary. The difference in your heating bill won’t be a lot whether you have double or triple glazing.

However, you shouldn’t only consider the amount of energy transfer you lose (or gain) through your windows!

It is also thinking about the solar gain that comes with double and triple glazing.

Increasing the temperatures inside the room, if it’s a sweltering day and you want your house to warm up accordingly, triple glazing will allow for less of this heat to seep through in comparison to double glazing.

This means that you won’t benefit from the same amount of natural warmth with triple glazing as you would with double glazing.

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How Much Does Double Glazing Cost?

This, of course, will depend on the style and size of the windows (as well as how many windows you need instead) you want in your home.

It will also depend on the type of glass that you want in your double-glazed windows – examples of which are toughened glass, annealed glass and laminated glass.

They can be anywhere from £2,000 - £7,000but you can easily get a quote that will suit your needs.

When you are purchasing a new home, take a look at the windows.

If they are in good condition and are double-glazed, it will save you money in the long term and mean that you don’t have to invest in new ones.

When it comes to windows, there are different options for you to consider. Each option has its benefits and plenty of things to consider. When choosing which windows you want, think about which will be best for your property.

One of these things is the cost of triple glazing. We are going to be looking into the different options and how they impact triple glazing cost in more detail down below.

If you are interested in finding out the different window options available for you to choose from and how much they cost, then keep reading!

What Is Triple Glazing

Triple glazing is a type of window made up of three panes of glass instead of one or two. They provide various benefits to the building, such as protection from noise.

Between each pane of glass, there is usually gas such as argon or xenon. This works together with the extra pane to keep out much of the outside world.

This is the only real difference between triple glazing and the other options that are available on the market.

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Different Window Options

Other than triple glazing, you can look into double glazing or a single-pane window. Double glazing, as suggested in the name, uses two glass panels to create the window.

They were initially designed to exclude heat from the property. Before the invention of triple glazing, they were the best option on the market.

Alternatively, there is a single-glazed window option, which only uses one pane of glass. As you can imagine, this is not as effective as the other choices regarding keeping heat inside the home and blocking out noise.

Each option does come with a price difference. This is something that we will be looking into a little further down in the article. We aim to help you find out the cost of triple glazing.

Benefits Of Triple Glazing

As there are more panes of glass used in triple glazing. It is more effective at certain things. One of these is keeping noise out of the property at all day hours.

The thickness of triple glazing is a huge selling point, especially for those who live in noisy areas. By having a third pane of window glass, there is an added layer in place. This gives an extra blanket of protection against outside noise.

Another benefit is that it provides the property with more security, as triple glazing is much stronger than single and double glazing.

This means that if anyone does try to break into the property through the window. They will have a much more difficult time if you have invested in getting triple-glazed windows rather than one of the other options.

Or, you might be interested in the fact that it will make the property warmer as it stops heat loss more effectively than the other two.

This will, in turn, help to lower your gas or electric bill as there will be less heat escaping throughout the day, which means that you are not going to need your heating on as often.

The trapped heat will also help to make the property cosier which is going to be something important if you are trying to create a homely environment.

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Cons Of Triple Glazing

However, it is not all sunny days, and we mean this literally because triple glazing can impact the amount of light that enters your home.

The thickness of the glass panes makes it harder for the sun rays to reach inside your property. Therefore, the natural light is significantly less than with double or single glazing.

This is the only con of triple glazing other than the price, so make sure that you need the upgrade or it is something that you think will be useful for your home. Don’t forget to consider this as if natural light is essential to you. It could be a deal-breaker.

Average Cost Of Triple Glazing

This, yet again, depends on how many you want to be installed and their quality.

Something that you do need to be aware of is that triple glazing cost is quite a bit more expensive than single and double glazing, but this is for a good reason. With the bonuses that come with the extra pane, you would expect to pay a little more for this.

Triple-glazed windows also require more materials to make and need a specialised manufacturing process – that many window glaziers might not offer.

It is hard to give you an accurate idea of how much triple glazing is going to cost you precisely because you are going to need a quote from a Double Glazing Installer.

But this doesn’t mean we can’t give you a rough idea. It will all depend on what kind of property you are in, how many windows there are and a few other factors as to how much you can expect to pay for this service.

When you compare them in terms of their energy efficiency, the difference in the money you save with heating is minimal.

Therefore, you need to consider whether triple glazing is truly worth it.

So, if you are looking to replace around four windows in your two-bedroom flat, you will be looking at roughly £2000.

What to do Next

Now, as we said above, please do not take the figures that we are providing you with as gospel because some companies may charge more or less depending on what they have set their rate at.

If you live in a two-bedroom terraced property which will usually have roughly five or six windows, you are going to be looking at between £2500-£3000. Do you see the pattern here?

Typically, you will be looking at paying around £500 per window that you want triple glazing on, so you should times this by the number of windows in the home for a rough estimate.

Do be careful, though, when you are trying to work this out because the price per window usually decreases if you have more windows. So, if you have twelve windows in your three-bedroom house, you can expect to pay around £6,000.

If you decide to replace all your windows at the same time, it could end up costing you a lot less than it would replace them in small clusters.

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The Difference In Price

But what is the difference in price when it comes to single, double, and triple-glazed windows? Well, as we said above, you can expect to pay around £500 per triple glazed window in your home, depending on the number of windows that need replacing.

If we look at double glazing, you can expect to pay around £350 per window or maybe just under. So, it is quite a big difference, but this is no surprise when you think about the benefits and how just how much of a difference you will see when you upgrade from single or double-glazed to triple.

We hope that you have found this guide on the cost of triple glazing helpful and now know what the average price is for your window upgrade!

Get in touch with a professional to get an exact quote on having triple glazed windows installed in your home so that you know how much you will need to put away!

The glazing companies that you receive quotes from will be reliable and professional. However, you still want to ensure that you are well-informed about triple glazing before you get your quote.

This way, you will already have an idea in your mind about how much you should be paying, which will give you the information you need to make an informed decision about the quote.

Ensure that the company you're dealing with are FENSA registered or registered with the Glass and Glazing Federation (GGF) to give you extra security and ensure that they are working with UK Building regulations.

Do You Have To Upgrade To A Triple Glazed Window From Double Glazed Windows?

There are other alternatives to upgrading your windows to triple glazed windows.

You could invest in heavy-lined curtains to help reduce the amount of heat you are losing and to help with noise reduction, or in the summer, invest in blinds that will help to improve the amount of heat that’s transferred into your home.

These are two simple alternatives to upgrading your double-glazed windows to triple glazed windows.

Saving you money that you would have spent upgrading, you can (if you want) use the money that you saved on other upgrades in your house.

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Finally, Is Triple Glazing Really Worth It?

As mentioned throughout this article, triple glazing is significantly more than double glazing – so is it really worth the hefty investment?

You can quickly get all the benefits from triple glazing with double glazing if you update them.

There are double-glazing window options on the market that are modern, have A+ energy efficient ratings and offer excellent U-values.

Yes, they might not hold just as much heat as triple glazing does, but does that extra pane of glass really make all the difference?

This, of course, is a decision that has to be made by you.

If you don’t want to spend more for a little less heat loss, it probably isn’t worth it.

You should also consider that triple-glazed windows will add an extra level of security to your home, making it harder for vandals to break into.

This is sure to give you a bit more peace of mind when you are leaving your property to either go to work, out to the shops or away on holiday.

It will also depend on what windows you want to upgrade throughout your home. If it’s all of them, the cost will be more substantial.

But, if you only want to upgrade the windows downstairs in your property, it might be worth it in the long run.


Before making the decision whether you will choose double vs triple glazing.

It’s essential that you do thorough research, get quotes for each and think about what you want to get out of them.

By deciding which type is more appropriate for your needs, you can discover the types of glass that are available.

As well as the styles and what impact they will have on your home.

It’s a significant investment - no matter which one you choose, so it’s essential to think carefully before taking the plunge.

Windows are a big part of your home and could be the difference between a large electricity bill and a small one - making it more appealing to potential buyers when you go to sell your house in the future.

You want to know that you have made the right decision.

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Mr & Mrs Young

June 12, 2019

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