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Can uPVC windows be triple glazed?

The world is changing at a rapid pace, and there is a growing need for energy efficiency in every aspect of life. In recent years, the use of triple glazing has gained prominence in the construction industry as it can significantly reduce energy consumption within homes and commercial structures. But the question remains, Can uPVC windows be triple glazed? The short answer is yes, but there are some things to consider before making the switch.

What is Triple Glazing?

Triple glazing is a type of window that consists of three separate panes of glass with an air pocket or gas-filled space between them. This design offers improved insulation and sound reduction compared to double glazed windows. In addition, triple glazing also provides better security for a building as it creates an additional barrier to protect against intruders.

Can uPVC windows be triple glazed?

uPVC, or unplasticised polyvinyl chloride, is a type of plastic commonly used in the manufacture of windows and doors. Unlike other plastics like PVC, uPVC is rigid and durable, making it an ideal material for window frames.

The answer to whether uPVC windows can be triple glazed is a resounding yes. uPVC windows are versatile and have the capability of holding triple glazing panes without straining the window frame. However, there are some factors to keep in mind when considering triple glazing as an option for uPVC windows.

Window Frame Size

One of the most crucial considerations when upgrading to triple glazing is the size of the window frame. While uPVC is a durable material, the frame should be sturdy enough to support the additional weight and size of the extra pane of glass. A professional installer can evaluate existing window frames and determine if they are suitable for triple glazing.

Energy Efficiency

Triple glazing can have a significant impact on a building’s energy efficiency. Improved insulation provided by triple glazing can lead to energy savings in the long run, but it also adds to the initial cost. Therefore, it is essential to balance the benefits of energy savings with the additional cost of installation.


Compared to double glazed windows, triple glazed windows can be more expensive to install and maintain. The additional pane of glass and heavier frame can result in higher installation costs. However, the energy savings that come with triple glazing can offset the initial cost of installation.

Noise Reduction

Triple glazing can also provide improved sound insulation compared to double glazing. This benefit is especially important for homes or commercial buildings located near busy roads or other sources of noise. Triple glazing can significantly reduce outside noise, creating a more peaceful and comfortable indoor environment.


Triple glazing can offer significant benefits when it comes to energy efficiency, security, and noise reduction. uPVC windows can indeed be triple glazed, but the decision should be made carefully with the help of a professional installer. The size of the window frame, the cost, energy efficiency and noise reduction should all be taken into consideration to find the best solution for each building. With proper planning and installation, uPVC windows can effectively hold triple glazing panes without compromising on their structural integrity, durability, or functionality.