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.

Liam S.
Great experience start to finish - quickly came round and quoted, providing confidence in what they would do and who would be involved, co-ordinated all the individual workers who worked to a high standard. The work itself was done to a high quality and on-time, and the difference has been amazing - great company, would highly recommend.
Don T.
We are all absolutely delighted with City Insulation and the work they have just completed at my brother's house in Liverpool. Sadly my brother is living with alzheimers now and he does have some noisy outbursts now and again, which is natural for this horrible illness. He is being cared for 24/7 in a normal semi-detached house in Liverpool however his neighbours are not normal and keep complaining and putting in complaints to the police / council etc. I found Adam/City Insulation on the internet and he was so understanding and came up with exactly the right solution. All the carers in... the house are delighted and its made their job easier as they no longer worry about the next door neighbours who have got to find something else to complain about now! A big thanks to Adam and his team and if you have any noise issues etc you now know who to contact! (Ps very clean, very quick job, great value for money)read more
George Q.
Best experience I've had with any tradesman to be honest. We needed to improve soundproofing in commercial meeting rooms/studios and he laid out the different options very clearly so we could make the best decision from a range of budgets. His team were extremely professional, delivered the work exactly when they said they would with zero delays. Very friendly and flexible with everything onsite. Would thoroughly recommend.
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