We're fully booked until April 2026. If you're happy to wait, please enquire below. Thank you.
We're fully booked until April 2026. If you're happy to wait, please enquire below. Thank you.

Domestic

Thermal

  • Improve thermal insulation of existing windows by up to 65%
  • Solutions to fit any size and shape of window
  • Improve your EPC rating

As an extra layer of insulation, secondary glazing helps to minimise heat loss and heat gain through windows, resulting in reduced energy consumption and increased thermal comfort. This means stable temperatures throughout rooms all year round, staying warm in the winter and cool in the summer.

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

Reducing the transfer of heat

Secondary glazing acts as a protective shield against heat transfer by adding an extra layer of insulation to existing windows. The air gap between the original window and the secondary glazing unit creates a buffer zone that reduces heat transfer through conduction and convection. This prevents heat loss during colder months and heat gain during warmer periods, improving the overall thermal performance of the building.

Keep the warm in and the cold out

One of the primary benefits of secondary glazing is its ability to minimise heat loss through windows. As an additional barrier, secondary glazing prevents warm air from escaping and cold air from entering your home. That means lower temperature settings in winter, lower energy consumption, and lower bills. A more stable indoor temperature gives you and your family optimal comfort right throughout the year.

Reflecting the sun’s heat

Secondary glazing plays a significant role in reducing solar heat gain. When combined with low-emissivity glass coatings or solar control films, it also helps to reflect a significant portion of the sun’s heat, preventing it from entering the house. This reduces the need for air conditioning or electric fans, resulting in energy savings and a reduced environmental impact.

City Insultation’s secondary glazing expertise brings a range of thermal benefits for homeowners of all size properties – from flats to mansions. Our secondary glazing adds a critical layer of insulation, reduces heat loss and heat gain, and improves comfort with steady temperature control. Over the course of a single year it can also help drive significant savings on energy bills.

Our Process
Our Process
Our Process

Our Process

TESTIMONIALS

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

Satisfying L.
1769458748
Adam did a excellent job, he left my property spotless, the work carried out is immaculate. Great Communication & arrived at the time and daycarranged, I could mot be more happy.I highly recommend city insulation 👌
David M.
1767870415
I requested that City Insulation take on several projects at my apartment in Manchester, including reinsulating most of the walls and adding secondary glazing for acoustic/thermal insulative properties to all the windows, as my apartment is centrally located in an area with significant noise disruptions during peak times, city events, and so on. The company was thoroughly professional throughout, including working to fit things matching the original fixtures and fittings of the property with the appropriate RAL colours and trims, and the insulation work additionally involved preparing a new... recess/infill section and adding an extra cupboard space, as well as managing electrical changes and other complexities. The whole process was managed carefully with great results, so I would highly recommend them.read more
Paul B.
1761855609
We'd had problems with noise from our neighbours – loud TV, loud phone conversations – which had become so intrusive we were considering moving. But we love our house, so instead, we decided to get "proper" sound proofing done by City Insulation, and we're really glad we did. Intrusive noise has been pretty much entirely eliminated and we feel like our home is our own once more. Jack and Nick did the work and were a pleasure to have in the house. They talked us through what they were doing, kept us up to date with progress and cleaned up thoroughly once they were done.
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We are fully booked until April 2026. If you're happy to wait, please enquire. If not, thank you for your interest, though we can't offer earlier dates.