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Cross section of Triple Glazing

Triple vs. double glazing: Which is better for your home?

Whether you are wanting to replace your windows, install a new front door, or even build a brand new conservatory, you will need to decide about what type of glazing you want to use.

No longer can you simply choose double glazing and be done with it, now you have the alternative option of triple glazing. Leaving you with the decision on whether to install Double or Triple glazed windows.

However, the question is – “Do you really need triple glazing, and is it worth the extra cost?”

What is triple glazing?

As its name suggests, triple glazing contains three, instead of two, panels of glass within a sealed frame. In between these panels, air will circulate, or insulating gases such as argon, which help to keep the cold weather out of your property and ensure any heat is retained.

Popular in cold climates, such as in Sweden and Canada, in the last decade or two, this type of glazing has started to increase in popularity in the UK. This is due to its many additional benefits.

Which type of glazing is better for my home?

Unfortunately, it is not as easy as simply stating which type of glazing is best, as there are many individual factors and concerns that you need to take into consideration when choosing between double and triple glazing.

Heat retention

Of course, one of the most important factors when deciding which glazing to choose for your home is how well they are able to insulate your property and keep it warm.

As you might have already guessed, triple glazing is more effective at retaining heat than double glazing, although there is absolutely nothing wrong with the way in which double glazing insulates your home, it is just that triple glazing goes one step further.

Keeping cool

Nearly as important as keeping your home warm, you also want to be able to ensure that your house doesn’t turn into a sauna when the sun starts to shine. This is particularly pertinent for properties that are south-facing.

Therefore, you want to pick windows that are able to control temperature, with this ability determined by the g-value. The lower the g-value of your chosen windows, the more effective they are at controlling the temperature in your home.

Triple glazed windows have an average g-value of 35%-63%, whereas double glazed windows are around 73%.


When installing any new windows or doors, it is vital that you remember that these are access points to your home; therefore, they need to be as safe and secure as possible.

Window Locking Key

Triple glazing is stronger than double glazing due to the extra panel of glass, however, if you have an older property, the weight of triple glazing may be too much for your home to handle and could lead to substantial damage to your walls.


A determining factor in nearly everyone’s decision-making process, it is important to ensure that you can comfortably afford the type of glazing that you choose for your home.

As more materials are needed to create and install triple glazing, it is more expensive than double glazing, that being said, you will recoup a lot of your investment in your monthly household outgoings as triple glazing has the ability to cut your energy bills by up to 50%.

If you are still unsure about which type of glazing is best for you and your home, or if you would like further information about the exact cost of installing double or triple glazing in your property, please do not hesitate to get in touch here.

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Average UK Conservatory costs

Knowing how much you will need to save every month will help you to reach your goal faster and ultimately lead you to having an exciting new addition to your home.

In order to know the rough price of your conservatory, it helps to know what style you want.

The styles of conservatory vary quite substantially, and some of this will be down to periodic differences and also how they make the use of space.

The best way to save for any kind of asset or extension is to know the price you can expect to pay beforehand.

Orangery (over £20,000)


By far, the most expensive style of conservatory in the UK is an orangery. These are based on Renaissance greenhouses which would, as you might have guessed, grow oranges and fruit trees.

They are partly made from brickwork, which gives them a much more sturdy and grandiose appearance.

These are certainly more pricey, but they blur the line between conservatory and extension more than the other options, due to the amount of brickwork involved.

Lean-to (over £5,000)

Smaller properties will probably benefit the most from a lean-to conservatory, as it takes up comparatively little space in your garden.

Lean to conservatory

Lean-to conservatories are relatively self-explanatory in that they are composed of four glass walls and a roof that leans up against the main building.

They are ideal for a small reading room or maybe even a social space (dining room or lounge) if you have room to do so.

Victorian (just shy of £7,000)

These are some of the most commonly advertised styles of conservatory as their roof and curved walls are instantly recognisable.

These are ideal for those that are interested in getting as much light into the conservatory as possible. They are very spacious, and can easily be used to hold social gatherings or be used as a quasi-extension.

T/B and P shape (upwards of £15,000)

This style of conservatory is much like the Victorian model in terms of appearance. However, the reason that this type of conservatory is far more expensive is that it is an extended conservatory of sorts.

The letter names (T, B and P) refer to the resemblance of the conservatory’s shape. So, for example, a P-shape conservatory would take the shape of a P by having a longer oblong room with a round end to it, which would look like a ‘P’ from an arial view.

Edwardian (£8,500 and upwards)

Edwardian Conservatory

If you don’t quite fancy the traditional appearance of the Victorian conservatory, and you don’t have the budget for a full orangery, then an Edwardian conservatory could be the ideal compromise.

These are rectangular in shape and have a brickwork base. The pointed glass roof makes them perfect for an elegant social space.

Which conservatory you ultimately opt for will depend on how much money you are prepared to save or part with. If you love the idea of an orangery, but don’t quite have the budget for it, then an Edwardian conservatory could be a very pleasing compromise.

If you want a Victorian style but with more space, then you may want to put a little more money aside for a P or B shape conservatory. Whatever you choose ensure you opt for Double Glazing, understand more about the benefits of double glazing & how it works here.

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