It doesn’t matter if you intend to install secondary glazing in your period home or whether you plan to upgrade your modern new-build because this type of glazing can provide you with a vast range of benefits. If you want to find out more about how secondary glazing can benefit you as a property owner in the UK, then simply take a look below.

What is Secondary Glazing?

If you want to understand the benefits that come with secondary glazing, then first you need to know what it is, and how it differs from regular double glazing. Secondary glazing consists of a completely separate, fully functional internal window that is installed on the inside of your property. It is completely independent of the existing, external windows. 

There’s a gap of around 15-20cm between the external window and the secondary window. The size of the gap depends on whether or not the windows are required for noise reduction, or thermal insulation. Secondary glazing for thermal purposes doesn’t need a large gap, but if the aim is noise reduction, then a bigger gap is required.

Secondary glazing can be fitted to almost any window, whether you have single glazed windows or double glazed. It will also give you similar benefits to double, or triple glazing without the hassle and fuss that comes with removing the external window itself.

Remarkable Benefits of Secondary Glazing for your Property

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Advantages of Secondary Glazing over Single Glazing

The unique design of secondary glazing is able to offer a lot of benefits. If you have a period property, then you may find that simply replacing the windows is no easy task and that it can be problematic at times. Single glazing is both fragile and thin, not to mention that it allows a lot of heat to escape. By adding secondary glazing, you can take advantage of all the benefits listed below.


Windows remain to be the main entry point for intruders. If you have fragile or single glazed windows, or if you have double glazing that is insecure, then your property will become an easy target. If you add secondary glazing, then you will soon see that you have a discreet, additional layer of protection. You can also have assurance knowing that your home is more secure if there should be a potential break-in.

Thermal Insulation

Are you sick of dealing with expensive heating bills? Maybe your home has a constant chill and you want to do something about it. Either way, secondary glazing can help you to capitalise on more thermal efficiency across the home. This can help you to reduce your fuel bills and it will also help you to cut down on your carbon footprint. The secondary panel is sealed, and this creates an air-tight seal between your property and the elements of the outside world. These benefits can be enhanced further by using Pilkington K or Low E-glass.

Noise Reduction

Secondary glazing for sash windows in period properties is an excellent way for you to make your home quieter. It doesn’t matter whether you are sick of the constant traffic or whether you are being bombarded with noise from loud neighbours because secondary glazing can give you a very convenient solution that eliminates noise-related headaches.

Condensation Elimination

Condensation is when moisture is drawn to the cold surface on the inside of your windows. It is a common issue of single glazing because it has a cold surface. If you have double glazing that has not been sealed properly then you may also see condensation. Secondary glazing is known to improve condensation issues, and in many cases, it will eliminate the problem.

Friendly to the Environment

Replacing your windows with uPVC glazing can be very expensive. You should also know that it is damaging to the environment. The production of uPVC and even the disposal of the window itself involves a lot of energy consumption, not to mention that toxic chemicals are also released. The great benefit of secondary glazing is that it is much more friendly to the environment. You will be adding another pane of glass, rather than disposing of the glass you have now. 

Easy to Install

The biggest benefit that comes with secondary glazing is that it is more time-efficient to install. You can get the whole installation done in a very short space of time. If you had every window in your property replaced in full, then this could take weeks, and this is an undertaking that not many people can commit to. 

If you want to find out more about secondary glazing for sash windows, or if you could benefit from this kind of installation, then the only thing that you have to do is contact us today. You can also give us a call at 020 8523 3210.