Are you considering having your windows replaced? With so much variety on the market, it can be difficult to take a pick. You are probably familiar with triple glazing. This term is often tossed around when window types are discussed and it’s usually associated with bigger spending.

In this article, we are going to dissect the cost of triple glazing and all the factors that can affect the total bill. Take a look.

Key Takeaways

  • As the name suggests, triple glazing has three panes of glass, offering more noise reduction and extra insulation than double and single glazing. Single glazed windows are rare these days.
  • The cost of triple-glazed windows is affected by the size of the triple-glazed unit, the type of material used, the style of the frame, and other factors.
  • Make sure your quote for triple glazing covers the cost of the windows and installation fees, among other things.
  • Triple glazing installation might take anywhere from a few hours to a couple of days. It’s essential that you call in a professional who will evaluate the state of your existing windows.
  • New triple glazing can last up to 25 years or more with proper maintenance.
  • While triple glazing is costlier than double-glazed units, it can ensure significant energy savings over time.
  • Triple glazing, unlike what some people believe, is used for glass in both pitched and flat roof skylights.

What is Triple Glazing?

Triple glazing is a window type that comes with three panes of glass instead of two, with two gas layers in between.

The additional layer makes the items heavier and provides further insulation. In addition to that, it can reduce outside noise. This type of windows are perfect for colder climates. It will make do if you happen to live near busy roads.

How Much Are Triple-Glazed Windows?

It depends on the materials used and the size of the new windows, as well as some additional factors. In general, triple-glazed windows cost between £700 - £2,200, given that the price starts at £500 per square metre.

While a uPVC-framed casement window is on the lower end of the price range, timber is a lot more expensive. Buying the windows direct from a wholesaler may lead to a lower price.

If you want to get the best deals, you have to shop around and compare triple glazing prices. You should also consider the type of frame and material that will work best for your home.

Even though triple glazing costs more than double glazing, it's worth the money in the long run. Also, it's perfect if you want to make your home energy efficient.

Here are a few examples:

  • For a detached house with 10 glazed windows = £12,000
  • For a semi-detached house with 6 windows = £7,200
  • For a semi-detached house with 8 windows = £9,600
  • For a two-bedroom terrace with 5 windows = £6,000

Please note that these are ballpark figures. To learn how much your new windows will cost, ask a few triple glazing companies for free estimates based on your unique situation.

What Affects the Cost of Triple Glazing Windows

It's no surprise that triple glazing is more expensive than double glazing. After all, the former involves manufacturing an extra pane of toughened glass and an extra chamber filled with argon gas. This also increases transportation costs. But let's take a look at the main factors involved in forming the price.

Size and number of the units you need

It doesn’t take a rocket scientist to know that the cost of any item is largely affected by its size and the number of units you need.

Hence, your triple glazing will be subject to that logic. The more windows you need, the more you will pay for them at the end, and vice versa.

If Passivhaus certification is necessary

If you are planning to turn your home into a Passivhaus, you have to meet certain requirements in terms of energy efficiency. The casement windows will end up costing a lot more than standard triple-glazed pieces.

The type of window frame material

In case you didn’t know, triple-glazed windows are available in different window frames such as aluminium, timber, and uPVC.

These have their own pros and cons and the price tag will vary accordingly. The most common frame material is uPVC. Timber frames are common too.

Frame style

The frame of your triple-glazed window plays a huge role in price forming. Fixed windows tend to be less expensive than tilt-and-turn windows.

Your location

Your location should be taken into account as well. As you are probably aware, the prices of building materials and anything, in general, are higher in the South East and London. Triple glazing windows are no exception.

Ease of access

If one or all your windows are not very easy to access, the cost to install triple glazing will be higher. This is especially true if they have to be mounted high or if their location presents a challenge.

What Should Your Quote Include?

When you get in touch with some providers of your choosing, make sure to ask for a quote. It should cover everything from installation fees and additional costs to the very cost of the windows.

Further to that, it should take into account any features like hardware (handles and locks). Finally, don’t forget to ask about the warranty.

What’s Involved in Having Triple-Glazed Windows Fitted?

The process of installing triple-glazed windows involves removing the old windows. Sometimes adjustments are necessary so the existing fixture can accommodate the new pieces.

Needless to say, you should always leave the job to a qualified professional. Installing triple glazing is a complex task that requires skills and knowledge that only people with training have.

The process may take days depending on the number of triple glazing window units involved and other factors. Waste removal is another thing that affects the duration of the process.

FAQ about Double and Triple Glazing

How does triple glazing work?

As the name implies, triple glazing has three glass layers with argon gas, which acts as an insulating gas. Between them are two air gaps. The purpose of this is an added layer of heat insulation which enhances thermal efficiency and decreases heat loss. Learn more about triple-glazed glass here.

Is acoustic glass better than triple glazing?

It depends on your specific needs. The main role of acoustic glass is to reduce noise levels and there is no focus on energy efficiency.

On the other hand, triple glazing offers both noise insulation and thermal insulation. What you get depends on what you want. Check out our article about double glazing vs triple glazing vs acoustic windows here or our guide on skylight insulation.

How much will I save if I fit triple-glazed windows?

With improved thermal performance in your home, you can save a great deal in the long term. The amount will depend on different factors such as your current heating system, the state and quality of your windows, and the size of your property.

On average, you can save anywhere between £75 and £100 annually on heating bills owing to the reduced heat loss.

How much does triple glazing reduce noise?

If on top of insulation you also need noise reduction, triple-glazed windows may be a great option for you. They can reduce the noise coming from outdoors by up to 35 decibels. If you live near an airport or a busy road, you should consider investing in triple glazing.

Is triple glazing the right choice for me?

Triple glazing has a host of benefits. If you are looking to enhance the energy efficiency of your property and even reduce outside noise, this will be a great addition to your home.

It also works if you live in a cold climate and you don’t want to lose heat through your windows. Of course, you should consider the triple-glazed windows cost before you make that decision.

How long does it take to fit triple glazing?

It depends on the number of units you have to install. Generally speaking, it can take anywhere from a few hours to a couple of days.

Keep in mind that the process of installing a triple or double-glazed window involves removing the old double glazing and making any adjustments to the frame as necessary.

Can I triple glaze existing windows?

Yes, you can. Of course, you should call in qualified casement window fitters. They will evaluate the existing units and decide if triple glazing can be installed.

Why is triple glazing so expensive?

The answer is simple. Tripe glazing uses an extra layer of insulation compared to a double-glazed unit, hence the bigger triple glazing costs. Aside from the extra materials, the labour and skills to have such windows installed should be factored in.

And while the triple glazing cost might be a bit too much for your liking, it can be compensated later on by reduced energy bills.

Is triple glazing worth the money?

Triple glazing is quite worth the extra cost and it can be a great investment in your home. However, it depends on what you need. Some people will probably find this option is not worthwhile.

How long does triple glazing last?

With proper maintenance, triple glazing can endure 25 years or more. It is important to provide regular cleaning and expert assessment to ensure that your windows are up to par.

What is the price difference between new double glazing and triple glazing UK?

Triple-glazed windows are twice as expensive as double-glazed windows in the UK, typically starting at £500 per square metre. The final triple glazing cost will be influenced by additional factors such. This includes but is not restricted to the type of material used, the number of windows required, and the overall size of your property.

What are the disadvantages of triple glazing?

There are two main disadvantages worth mentioning. First, triple glazing is much heavier due to the additional layer of panes. This means that the existing frame and fixtures should be sturdy enough to support it.

Second, these triple-glazed window units are costly. Check out our article on the topic.

Does triple glazing keep heat out?

Triple glazing is made to keep the heat in instead of out. This is due to the extra pane of glass mounted to it, thanks to which thermal performance goes up. Hence, heat loss is significantly reduced. For warmer climates, triple glazing could reduce solar gain.

What is Window Energy Rating?

This is a standard UK method of measuring how much heat is lost through a window. It helps you determine just how energy efficient your entire window is using the "U" value. The most energy-efficient units are those marked A++.

If you are looking to get lower energy bills, you should consider this option for your replacement windows. It doesn't matter if you're dealing with triple or double-glazed windows. You should go above and beyond to reap the benefits of each alternative.