City Sound

We offer the highest performance, minimalistic secondary glazing the industry has to offer. Dealing direct with the manufacturer ensures unbeatable value and superior quality. We are a flexible, accommodating company, that values customer service like no other. Due to our volume of manufacture and impeccable quality control, we are able to offer trade clients (on a supply only basis) a 40% discount on all enquiries, making us London's most competitive trade supplier of secondary glazing. City Sound has been serving London's community since 1968.

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?

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. This enables the window to be opened to any position, also allowing for the panels to be operated with minimal effort. It is essential for your new secondary glazing to mirror the external windows.

There are important reasons to reduce energy consumption in our buildings through improved thermal insulation. In terms of energy saving, windows are the prime area in which heat loss can be prevented. Single glazed windows are poor insulators and heat loss is exacerbated if the window does not have effective seals.

Dealing with commercial clients and projects needs special care and knowhow. Weather you be an architect looking for the right company and product to specify in your clients plans, a contractor tendering for a project or if you are already on site, City Sound has the experience and background to help steer you and your project into the right direction. Being a medium size company, we have the flexibility to adjust our ways to suit each project and will always go the extra mile for each and every client that comes our way.

With a number of styles to choose from, it is always important to pick the right one that suits the external windows. Mirroring the original windows and not adding site lines is very important, as it ensure the secondary glazing blends in well with its surroundings and is as unobtrusive as possible. If you are living in a period home, this is even more of a concern, as you do not want to detract attention away from the charm the windows lends to the property. Secondary glazing is, by far, the best solution to reduce obtrusive environmental noise penetrating a property through the primary windows.