Triple Glazing

Manufactured and fitted by your local experts in Devon

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Triple Glazing

  • If you are looking for the most efficient windows available on the market, then triple glazing is the choice for you.

    Triple glazing uses the same technology as double glazing – trapping dense gas between glass panes to limit heat transfer – but it uses an extra pane of glass and an extra pocket of trapped gas. This enhances heat retention even more than double glazing and makes sure none of the outside cold enters your home.

    We are proud to be at the forefront of the industry, providing the most innovative products and bringing them into your home, such as triple glazing. Whether it is heat generated by the sun or heat that has been created indoors, the extra pane in our windows helps to maintain that heat and maximise energy efficiency.

    Triple glazing is widely used in colder parts of the world, such as Norway and Sweden, because of its ability to preserve heat, not to mention it also helps to reduce outside noise pollution.

    By installing triple glazing, you will make significant savings on your heating bills, but that doesn’t mean you have to sacrifice style. We offer triple glazing in a variety of different window frame materials and finishes so you can make your home both more energy efficient and more beautiful.

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    Lifetime Guarantee
    10-year manufacturer’s guarantee.

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    Tailor Made
    Classic windows tailor made to your exact specifications.

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    Flexible monthly payments

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    Interest free credit

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To invest in triple glazing find your nearest showroom to discover what options are available with a no obligation quote.

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Does triple glazing make a difference?

Just as double glazing is more insulative than single glazing, triple glazing is an improvement on double glazing.

You can look at the U-value of different materials to tell you how good they are at insulating. Less heat is lost when a material has a lower U-value, and more heat is lost when a material has a higher U-value. A double glazed window has a U-value of 1.2 and triple glazing is half that at 0.6. To put this into perspective, a brick wall has a U-value of 2.0.

You should save money on your heating bills with either double or triple glazing as they both effectively trap heat inside your home. However, other things such as draughts can reduce the energy efficiency of your home, so you might want to fix these issues if you’re serious about saving on your heating bills. Triple glazing is more expensive than double glazing, so you don’t want your efforts to go to waste if you’re making an investment.

How long does triple glazing last?

At AGS, all our triple glazed windows have a 10-year manufacturer’s guarantee, but they’re likely to function perfectly well for 20 – 35 years. As they get older you might notice some degradation of their insulative properties, but not to a significant degree. Just make sure you take care of your windows by wiping them down when they’re dirty and remember to clean debris from the frames on a regular basis.

Although factors such as the weather and the area you live will impact the longevity of your glazed windows, keep your windows well maintained and they’ll last for decades.

Is it worth replacing double glazing for triple glazing?

Although triple glazing is more insulative than double glazing, lots of homes in the UK don’t need it. Colder Scandinavian countries where residents endure severe winters generally install triple glazing as standard. However, as we don’t normally face these sorts of conditions in the UK, double glazing is usually sufficient. If you live in an urban area and have recently fitted double glazing, switching to triple glazing might not make a noticeable difference.

This being said, if your window glazing is getting old and you live in a rural area where the temperatures drop sharply during the winter nights, you might want to consider getting triple glazing. It can be a great investment, help you save on heating costs, and can even add value to your property.

What is the difference between double and triple glazing?

Double glazing consists of two layers of glass separated by an air gap. This air gap is filled with argon — a dense gas that prevents cold from travelling between the two panes of glass.

Triple glazed windows work in the same way, but contain another pane of glass and another air gap filled with argon. This makes them thicker and means they can provide more insulation.

Triple glazing is more expensive than double glazing because of the extra material used. However, if it improves the energy efficiency of your home, you might find yourself saving on energy bills.

If you still have questions about triple glazing, contact us today to chat to one of our experts.

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We have various low cost finance options available. Get a quick quote and apply for finance at the same time.

Features and benefits

Guarantees you can depend on.

We have built up a great reputation over years of delivering a first class service and excellent products, all from our local, no nonsense all-about-you company.

From characteristic country cottages to contemporary town houses, we’re confident that our products will offer a style and finish to truly transform your home. Through constant innovation the quality, durability and security of our products is genuinely second to none. As a local company we are proud to offer British Standards BS7412/PAS24 for enhanced security.

We refuse to compromise on quality

Our windows are made from British Made, high quality MarinespecTM components, with up to 25 years anti corrosion. They are built specifically for the more exposed areas of corrosion, such as coastal environments to give you worry free performance beyond your guarantee.  We believe spending more on components is worth every penny, and sets us apart from our competitors.

State of the art fabrication for best quality

We have invested millions of pounds into one of the most state of the art manufacturing facilities in the UK.  This enables us to provide you with consistently high quality products at exceptionally good prices. Our loyal factory workers are well trained and take pride in their work, they really care about quality.  Our machines are maintained according to a rigorous servicing regime to keep them in top condition.

Superior energy efficiency

Our ‘A’ rated energy efficient and triple glazed windows are tested by the BFRC, which will save you money on your heating bills. By law your windows and doors have to meet strict thermal performance regulations but you can be rest assured that our products exceed current requirements.

Energy saving is incredibly important and so is keeping your fuel bills down. We are continuously looking for ways to make our homes energy efficient and one way is to choose new PVCu windows and doors. Not only will they help to keep your home warmer, they will reduce your energy loss.

Don’t just take our word for it!

Our suppliers conform to strictly controlled and independently monitored Quality Management Systems such as ISO 9001, to ensure that everything is done correctly and according to best practise.

Our windows are tested independently by British Standards for security, weather tightness and strength performance. This means that periodically, we have to send them to independent test houses, in order to be tested to destruction.

These are just some of the many standards the products in our vast range conform to. Needless to say we take the quality of our products very seriously indeed.


Made to measure

The styles available are endless and the choices to suit your home are bigger than ever before. Traditional, contemporary or modern; our versatile window and door designs will create the look you want to complement and enhance your home. If you want windows that are as individual as you, our range of coloured and woodgrain windows offer you fifteen different colours and finishes.

A local business that really cares about its customers

Our sales consultants, surveyors, admin team and installers really care about you and your home. They are highly trained, motivated and want to go the extra mile to do the best possible job. Our fitters will treat your home with care and respect and will take time to ensure that you are delighted with the end result.

With a local showroom including an extensive display and experts on hand you can see before you buy and meet the team!

An effortless purchase process

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