Secondary Glazing

  • Up to an 80% reduction in noise
  • Improve thermal insulation of existing windows by up to 65%
  • Improve security with internal access only

Secondary double glazing offers numerous benefits for commercial premises.

Firstly, it significantly enhances thermal insulation by creating an additional layer of air or gas between the existing window and the secondary glazed unit, reducing heat loss and energy consumption. Secondly, it effectively minimises external noise transmission, creating a quieter and more productive working environment. It also enhances security, acting as an extra barrier against break-ins.

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Here are just a few ways we can City insulation can help

Warmer in winter, cooler in summer

Secondary glazing increases the thermal insulation of commercial premises by providing an extra layer of insulation. It helps to prevent heat loss in colder months and minimises heat gain during warmer periods. This improved energy efficiency can lead to vastly reduced heating and cooling costs, making secondary glazing a cost-effective investment in the long run.

Save energy, and money!

By reducing heat loss and heat gain via windows, secondary glazing helps to optimise the energy efficiency of commercial buildings. This produces significant energy savings, lower carbon emissions, and a reduced environmental impact. It can also reduce energy bills, so secondary glazing makes good economic sense too.

Improve your security

Commercial premises often contain valuable assets, sensitive information, and expensive equipment. Secondary glazing provides an additional layer of security, making it more difficult for would-be intruders to gain access. The robust construction and materials used in secondary glazing act as a deterrent, enhancing the overall security of the premises.

Preserving the past

In commercial premises housed in historic or listed buildings, it may be challenging or even prohibited to replace existing windows. Secondary glazing offers a practical and effective solution for improving insulation and reducing noise while preserving the original aesthetics and architectural integrity of the building: energy-saving, noise-reducing features that won’t diminish the historical value of your property.

Easy to install, easier to maintain

Secondary glazing is relatively easy to install and maintain. It can be fitted in front of existing windows without any need for major structural changes, minimising disruption to daily operations. Additionally, secondary glazing units are versatile and can be customised to fit a wide range of window styles, sizes, and shapes, making them suitable for all kinds of commercial premises.

Condensation control

Secondary glazing helps to control condensation on windows by reducing the temperature difference between the interior and exterior glass surfaces. This prevents moisture build-up, which can lead to issues such as mould growth and damage to the surrounding walls and furnishings. By mitigating condensation, secondary glazing contributes to a healthier and more hygienic indoor environment.

With City Insulation secondary glazing helps to reduce noise reduction and improve thermal insulation. It also enhanced security and creates energy savings, while improving the overall comfort, and productivity in a commercial setting. Versatile, practical and cost-effective secondary glazing is a great solution for businesses keen to enhance the working environment and reduce their environmental footprint.


Don’t just take our word for it. Read what our satisfied customers have to say.

James A.
Adam visited our property to advise on noise from a pool plant room that was coming into the house. He advised on the best approach to eliminate the vibration that was being heard. On his advice this has now been resolved. Adam was great to deal with and we would highly recommend his company
Katja K.
The customer service was fantastic with our quotes updated several times to match our requirements. The team that came out were very efficient and stayed late to finish the job in one day without being asked to. The sound proofing is of really high quality and we haven't heard any noises at all from our neighbours since it was installed
Peter D.
I can't praise City Insulation enough they are very professional, informative, courteous and they certainly know their stuff. They completed our lounge and dining room soundproofing in two days, which was completed with great care and respect to our home and furnishings (thanks to a great installation team). Do yourself a favour and choose City Insulation, it's no surprise that they get regular 5 star ratings.
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