367 Chingford Road,
E17 5AE
Secondary Window Glazing


Welcome to CitySound, Londons finest secondary glazing company. Established in 1968, we’re still very much a family-run business, offering all our clients the highest quality products and service.

Whether youre a residential client in a listed building, or a commercial client in an office, we have a range of secondary glazing styles to offer.

Secondary glazing refers to the addition of a separate and supplementary pane of glass to the interior of an existing single glazed window, as opposed to a completely new double paned installation which would be required for a double glazed window.

Secondary glazing can provide an excellent alternative to double glazing with a number of useful benefits.

Environmental Noise

Secondary glazing is widely known as being the most effective way to reduce noise travelling through windows and doors.  It can significantly reduce environmental noise caused by traffic, aeroplanes, disturbing neighbours or passers by.

Thermal Insulation

It provides thermal insulation for old, drafty, single-glazed windows.

Added Security

Citysounds secondary glazing can also be installed as an added security measure.

Secondary glazing has been around for a long time. In more recent years though, our company has invested a lot of time and effort into providing a product that is aesthetically pleasing, minimalistic and unobtrusive, as well as being highly effective.

We place a lot of thought and focus on the visual impact secondary glazing will have on your property. This is of particular importance if you live or work in a listed building or a conservation area.

All of our engineers and surveyors have been trained to install and finish the windows to the highest standards.

We promise personal attention to your window needs and boast an excellent after-sale service.

If you’d like more information, or would like a free quotation give us a quick call on 020 8523 3210.



First class service from beginning to end. Their advice was extremely valuable in order to choose the best option for our apartment. The staff who installed the windows were exceptional: quick, clean and delivered what was promised. The administrative staff was also very helpful. Windows look beautiful and they are very effective. We highly recommend.

Beatriz Alejandro

Initially enquired online and got a prompt quote. Once I accepted they came round to measure up and confirm quote. I ordered the product after discussing details such as glass types etc. The production and installation went like clockwork. Very fast and efficient service with extremely responsive and helpful people. Thank you Sound City I will definitely use you in the future if I need more secondary glazing.

Chris Moore

From pre-sale, to installation to after-sale, I’ve had a wonderful experience with City sound. It all started with a very challenging project. All other suppliers I”d contacted were nowhere near the level of professionalism, quality, integrityand honesty that I did get from the entire team at City sound.

Lawrence Dawson

I found City Sound by doing a google search and I was advised by another company to make sure I chose a reputable company with a registered business and a business who had not changed name regularly and after a few quotes with other companies I found City Sound. From the first contact I was happy, the service was friendly and efficient. I received an initial quote almost immediately after giving them my measurements.

Kylie Luck

Very rarely am I so impressed by a product.

The glazing has made a massive difference and the quality of the service was brilliant. I am finally able to get a full night’s sleep.

Elliot Gold

We are a Drama School in London and had a large hall overooking a very busy main road which limited what could be done in the room due to the noise. Our drama dept were keen to utalise the space for perfromaces etc but it was just not possible. We therefore have had secondary Glazing installed by City Sound this month (march 2013).

The feedback within the School has been fantastic.

James Med