Back in 1968 Derrick Smith founded City Sound, at a time when secondary glazing was virtually unknown, despite the growing problem of old Victorian sash windows in London buildings. Although beautiful, these sash windows were often poorly fitting and allowed in all the noise, draughts and dirt of a growing city.
As most of the buildings in central London are listed, the thought of changing the original windows for double glazed units was not an option. Rightly so - could you imagine what London would look like today if everyone had installed double glazing to their own design? This is what prompted Derrick to start up his own secondary glazing company, and it's true to say that he never looked back.
As most of the buildings in central London are listed, the thought of changing the original windows for double glazed units was not an option. Rightly so - could you imagine what London would look like today if everyone had installed double glazing to their own design? This is what prompted Derrick to start up his own secondary glazing company, and it's true to say that he never looked back.
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Secondary Glazing is the most effective option of reducing noise travelling through windows and doors. Secondary glazing is a cost effective way of improving thermal insulation without altering the appearance of the property. We offer the highest performance, minimalistic secondary glazing the industry has to offer.
Find below a few examples of our most popular window styles. Our sash style windows incorporate our unique EASY CLEAN system that is exclusive to City Sound. Give us a call on 020 8523 3210 or email us for more information on all the other style options we offer. Vertical sliding sash windows are by far the most popular style of secondary glazing.
Commonly called "Vertical sliding sash windows" within the industry, sash windows are by far the most common window style. For this reason of course, our secondary glazing sash style windows are equally as popular. Consisting of two panels (top and bottom) that slide up and down, our sash windows are counter balance with pre-tensioned springs to hold the weight of the panels.
The most versatile of all the styles available, horizontal sliding windows (side to side sliding) can be manufactured with 2, 3 or 4 sliding panels. This style of secondary glazing is a perfect match for Crittal windows. The individual sliding panels slide with immense ease, allowing unobstructed access to the external windows.
An alternative to screw fixed units, fixed lift out windows have a removable glass panel that can be easily lifted out of the master frame to facilitate access to the external windows. This style of window is often used on external windows that are very rarely used or in air-conditioned offices where cleaning between the windows needs to be facilitated.
Reviews (6)
Alan Crane
Aug 07, 2021
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Positive: Professionalism, Punctuality, Quality, Responsiveness
I can't recommend City Sound enough - they installed secondary glazing in our flat to reduce outside traffic noise and it works a treat. In terms of pricing and communication they were perfect to deal with.
Services: Glass fitting, Glass installation
I can't recommend City Sound enough - they installed secondary glazing in our flat to reduce outside traffic noise and it works a treat. In terms of pricing and communication they were perfect to deal with.
Services: Glass fitting, Glass installation
Peter Schweiger
Aug 04, 2021
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Manohar Sharma
Apr 27, 2021
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I contacted two secondary glazing companies and City Sound not only came in with a better quote but with a longer guarantee. They were very communicative throughout and allowed me to pay in installments which I really appreciated. The installation team was very efficient, did a great job and I am very satisfied with the product, result and overall service.
B. Lossom
Mar 17, 2021
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Nick Griffin
Dec 26, 2020
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I needed secondary glazing as we live on a busy road in Crouch End in North London. I discovered City Glazing and spoke with Andy who runs the business. I was really impressed with their product as it looked so inconspicuous and of good quality. I was also really impressed with their reviews online. I developed a clear sense of confidence in how the business was run and knew they would do an excellent job. I didn't even bother getting other quotes as I wanted their product and for them to install the glazing.
My wife and I are delighted with the results. The glazing is as inconspicuous as we hoped
My wife and I are delighted with the results. The glazing is as inconspicuous as we hoped
Cristina Alfonsin Barreiro
Jul 13, 2020
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City Sound installed secondary glazing in our house in Richmond in 2014. We live on a busy road. The secondary glazing was a huge improvement for sound and thermal insulation. Much better than triple glazing. Recently, during a renovation of our house, we contacted them to have a secondary glazing door removed and re-installed. It was not a huge job and it required cutting the glass. They have done a wonderful job again.
They are excellent value for money, the windows look sleek and are non-invasive. The installation team were professional, knowledgeable, polite in 2014 and also this second time
They are excellent value for money, the windows look sleek and are non-invasive. The installation team were professional, knowledgeable, polite in 2014 and also this second time
