Triple Glazed Windows

Our triple glazed A++ rated windows offer the best heat retention properties and warmth of any of our frames, making them ideal for north-facing windows. By maximising the sun’s rays, the extra glass panel helps to reflect heat back inside, making your home warmer and heating bills lower.

White uPVC triple glazed window
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  • 10 year guarantee
  • Established in 1966
  • Made in Britain

If you want a home that’s both warm and energy efficient, our A++ rated triple glazed windows are the perfect choice. As well as keeping in warmth, they have the best acoustic performance and sound insulation properties. With our triple glazing installed your home will be warmer, benefit from less noise and increased security. You could also enjoy cheaper heating bills.

To maximise the sun’s energy, our triple glazing features two panes of Low E glass and one pane of Low-Iron glass. The invisible metal coating on Low-E glass reflects heat back into your room, making it much warmer and cheaper to heat. That means with triple glazed windows, you can increase the energy efficiency of your home by up to a third, compared with double glazing.

Triple glazing is ideal for north-facing windows or elevations where there is little benefit from natural sunlight, here triple will give you the best insulation property of any of our windows. As you probably won’t need it in every room, you can mix and match the windows in your home to suit the aspect and elevation of each room - our experts can talk you through each room to help you choose the best combination for your needs.

As well as excellent heat retaining properties, the extra glass panel in our triple glazed windows also provide fantastic sound insulation so they’re ideal for homes where background noise is a problem.


Advanced safety and security features are an integral part of every Anglian product. For added peace of mind choose triple glazing or our sound reducing glass.

Energy Efficiency

All our windows are built to be energy-efficient but choose Triple Glazing, A or A+ rated styles for maximum performance.

Sound Reducing

Our special sound reducing windows offer extra peace and quiet. Their noise reduction qualities keep your home quiet from traffic, trains or aircraft.

The Benefits of Triple Glazing

White Knight triple glazed window

Because our A++ rated triple glazed windows feature an extra panel of Low E glass, they offer added security benefits, making your home even safer. This extra glazing also helps to protect your home from unwanted noise outside, a real advantage if you live under a direct flightpath or near a busy road.

The insulative properties of our triple glazing are impressive, with a 35% reduction of thermal transmittance compared to double glazing. Using insulating Krypton gas in these units inhibits the transfer of heat between the glass panes, significantly reducing heat loss and achieving a superb overall Energy Index of +32.

Our triple glazed windows are visually almost identical to our double glazed windows, except for an additional pane of glass and a slimline internal bead. This means it’s easy to mix and match the glass in your windows to suit the aspect of each room and use triple glazing where you really need it most.

With a choice of uPVC window styles to choose from, including casement, tilt and turn and bay, there’s a triple glazed window available from Anglian to suit every home.

All Your Triple Glazing Questions Answered

Would you like to know more about the benefits of double or triple glazing, and read more information about which windows can make home warmer or your house more secure?

Our FAQs section includes questions on when it’s best to install triple glazing, when and how you can use different glazing solutions and how to improve security and sound proofing in the home through your choice of window.

Visit our FAQs section which provides a great deal of answers to a range of commonly asked questions about windows, their design, build and longevity. They also cover areas such as energy ratings and available styles and materials.

Windows FAQs

Why choose Anglian?

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