Why Opt for Secondary Glazing

Secondary glazing is a fantastic tool for those who want to make their windows more efficient but can’t replace existing windows with double glazing. There are many benefits of having secondary glazing installed to single glazed windows, some of which we’ll outline here.

What is secondary glazing?

Secondary Glazing

Secondary glazing is when a supplementary piece of slimline glass is placed in the frame of a single-glazed window, effectively forming double glazing. This process is known as a ‘retro-fit’.

What is secondary glazing used for?

As secondary glazing is installed into an existing window frame, secondary glazing is a much more affordable option than double glazing, this makes it a perfect option for those of you wanting to make your windows more efficient without spending a fortune.

Secondary glazing is also a great option for improving the efficiency of windows in listed buildings, as often these windows aren’t permitted to be altered too much, making replacing the structure with the new frames required for double glazing almost impossible. Secondary glazing doesn’t require planning permission, so it is the perfect, fuss-free option for listed buildings or buildings that are in conservation areas.

The benefits

Now you know what secondary glazing is, you might be interested in knowing why you should opt for secondary glazing!

Insulation: Adding secondary glazing increases the insulating properties of the window as a layer of air is trapped in between the two panes of glass. This makes secondary glazing much more effective at providing thermal insulation than single glazing, and can help to lower your energy bills. The increased insulation of secondary glazing also works to provide reduced noise pollution too, so your premises will enjoy more peace and quiet.

Seal: Adding a second layer of glass and a more modern seal to your windows can draught proof your home and make it more comfortable, this increased seal can also help reduce the amount of condensation that builds up on your windows to make for a more attractive appearance.

Security: Secondary glazing can improve the security of your home, as breaking through two layers of glass requires more work, and is likely to attract attention before thieves have a chance to get into your home.

Maintenance: Secondary glazing is very low maintenance, simply requiring wiped clean every so often to keep the windows looking great.

Installation: In comparison to double glazing, the installation of secondary glazing is much more straightforward, and as the glass simply requires fitting into the frame already installed, there is very minimal mess or disruption to day-to-day life.


Lee Glass and Glazing are one of the leading glass experts in the Nottinghamshire area, serving both domestic and commercial customers. We have over 45 years experience in dealing with all aspects of glass, including glass repair, glass cutting and secondary glazing. We rely on our high quality products and excellent customer service to ensure complete customer satisfaction and are always on hand to assist in any way we can. Get in contact today for more information on any of our services, we’ll be happy to help.