What is the Difference Between uPVC and Double Glazing?

If you want to install new windows, you will first need to choose what kind of frame you would like. You can choose from uPVC, Aluminium, timber, and thermally broken frames. You should also consider your property’s conservation area, as you may have to apply for permission before changing the windows. Nevertheless, if you want to enjoy the best performance from your Double Glazed Windows, you should ensure that they are fitted correctly and sealed.


Choosing double glazed windows is an important decision for the energy efficiency of your home. Traditional windows and wooden frames can lose as much as 20% of heat. Double glazed uPVC windows can improve the efficiency of your heating system. These windows also have the advantage of being warmer than their wooden counterparts.

How Double Glazing Works and Why uPVC Windows Make It Better - Fenesta


The choice between aluminium and uPVC windows should be made in line with your individual needs. For example, if you live in a listed building or a conservation area, uPVC windows are an excellent choice. Alternatively, if you live in a modern development, you may prefer the sleek look of aluminium windows.


One of the biggest benefits of double-glazed windows is that they improve thermal insulation. They have many chambers which prevent heat transfer between them and the house. Double-glazed windows have an ‘A’ rating for energy efficiency. They are also more durable than timber windows, which tend to rot after a while. As a result, double-glazed windows are recommended for properties where heat loss is a concern.

Thermally broken frame

Thermally broken frames are essential for window and door systems. They provide a number of benefits through improved thermal performance. They typically comprise a reinforced polyamide bar fixed to the window frame. This reduces the density of hot and cold temperatures as well as noise.


The cost of uPVC and double glazing windows and doors varies a lot, depending on the style and size. A small house with nine to 16 windows will cost around PS4,400 whereas a large house with 13 or more windows will cost around PS6,800. The type of window or door you choose will also have an impact on the price, as sash windows will cost around one-third more than standard windows. You will also need to take into account the type of frame, whether it is wooden or uPVC. Additional features, such as A-rated windows and coloured uPVC will add to the cost. If you are replacing your current windows, you may also wish to consider hiring a smaller installer for a more affordable price. Smaller companies often do not have the same overheads as large companies, such as showrooms, TV advertising


The first step towards ensuring that your uPVC windows and doors are in good working order is to regularly maintain them. Keeping dust, dirt, and grime off your windows and doors is the best way to ensure that they continue to perform well for years to come. Cleaning UPVC windows and doors will also ensure that they are free from problems when opening and closing. Generally, a full maintenance should be carried out once a year. This will include oiling the window and door hardware with light machine oil and grease.

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