Secondary Glazing Westminster

City Sound manufactures its own secondary glazing windows. We specialise in aluminium frames only, powder-coated standard white.  This can be customised to match existing décor if necessary.

Call us today for a free quotation anywhere in Westminster.

Over 129 4.9-Star Reviews

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Why choose us

Working in this industry for over 50 years makes us one of the oldest existing specialist companies.  We have built a very strong reputation for being knowledgeable and transparent with excellent quality and after-sales service.

We are a family-owned company focused on every client and their specific needs.

08. Commercial secondary glazing (Sliding widows) fitted. Glazed with thick acoustic glass for noise reduction (Sloane Square, London)

We provide Secondary Glazing in Westminster With The Strongest Guarantee

If you’re looking for secondary glazing in Westminster then look no further!

We provide you with the highest quality, well built secondary glazing – guaranteed!

Whether you have thermal insulation problems or pesky, loud neighbours, our secondary glazing solutions will alleviate all of your woes!

Our Certified Professional Secondary Glazing Fitters are At Your Disposal

At your appointment time, our certified secondary glazing fitters will arrive with everything that they will require to do the job as swiftly and professionally as possible!

All of our fitters use methods that are in accordance with industry standards. This in turn helps to significantly decrease the risk of the secondary glazing not doing its job.

Our goal is to give you long-lasting comfort as well as peace. The installation of secondary glazing will greatly reduce noise as well as help with thermal insulation. 

07. Commercial secondary glazing (Sliding widows) fitted. Glazed with thick acoustic glass for noise reduction (Sloane Square, London)

Secondary Glazing FAQ’s

Does Secondary Glazing actually work?

Secondary glazing is an excellent, cost effective way of reducing the amount of external noise entering your home through your current windows. This simple and cost-effective treatment can increase sound insulation. This means your home will be quieter and you will sleep more peacefully. In other words, yes, it does work! Secondary glazing is also extremely effective for thermal retention and draught exclusion.

Does Secondary Glazing add value to my house?

Secondary glazing can greatly increase your home's value. If your home is older and not performing well, it may be worth considering investing in new glazing options. This will increase its appeal to potential buyers as well as allow it to sell at a higher price. Selling a property that is quiet and warm adds to the appeal.

If my Secondary Glazing breaks, who can fix it?

The Glazier who installed your secondary glazing should have a well-documented warranty on their work. Meaning they should be able to fix it for you. We here at City Sound proud ourselves on our craftmanship as well as the quality of our products, if any problems arise, please do not hesitate to contact us.

Secondary Glazing for Listed Buildings Westminster

A building listed under the law is protected and Listed Building Permission may need to be obtained before any modifications can be made. Not all repairs will require consent. Please get in touch with your local authority and make enquiries as to whether you need permission to install secondary glazing.

Sash Windows (Vertical sliding) Westminster

Sash windows, also known as “Vertical sliding windows”, are the most popular window type. Secondary glazing sash windows are also very popular.

Our sash windows consist of two panels, one at the top and one at the bottom. They are counter balanced with pre-tensioned springs that hold the panels’ weight. The window can be opened in any direction and the panels can be operated easily.

Horizontal Sliding Windows Westminster

Horizontal sliding windows, which can be made side to side, are the most versatile style. They can be manufactured with either 2, 3, or 4 sliding panels. This type of secondary glazing matches perfectly with Crittal windows. Individual sliding panels can slide effortlessly, providing unimpeded access to external windows.

All of our windows sections are made from aluminium and powder-coated white. You can customize frames to match your decor with a different colour or finish.

Fixed Lift Out Westminster

Fixed lift out windows are an alternative to screw-fixed units. They have a removable glass panel that can be lifted from the master frame and accessed through the external windows.

This type of window is used for external windows that are rarely used, or in offices with air conditioning where cleaning between windows is necessary.

Casement (Hinged) Secondary Glazing Westminster

Our hinged (casement) windows can be side- or top-hung. This design allows easy access to outer windows or doors.

This type of window is popular in hospitals, surgery rooms, and laboratories because it has minimal dust ledges, tight seals, and is easy to clean.

Things to do in Westminster

Photo Courtesy of: Carlos Bonfim

Westminster Cathedral

Address: Victoria St, London SW1P 1LT, UK

Main Phone: 020 7798 9055

Visit the Westminster Cathedral Website

View Westminster Cathedral on Google

Latitude: 51.495809

Longitude: -0.13944

Did you know that Westminster Cathedral rates 4.7/5 based on 6055 total ratings?

Reviews for Westminster Cathedral
Donald Hedges

Donald Hedges


a year ago

I am a Catholic. It is the mother church for us in UK.

Michael Moore

Michael Moore


2 months ago

The main altar has moved since I was last there. Side door also open for exit. Need to find out why. Side door also open for exit. Good social distancing by the congregation. Confession has resumed. Security very helpful. Welcome back.

PAVEL (Pavel Piarvushyn)

PAVEL (Pavel Piarvushyn)


2 months ago

At first, when I saw this amazing architectural building for the first time, I thought it was a Mosque, but only coming closer I realized that I was mistaken! It was a truly beautiful cathedral with an interesting appearance. Very beautiful and I was completely pleasantly surprised at how excellent the architecture in London is!❤

Photo Courtesy of: SAJ B

Buckingham Palace

Address: London SW1A 1AA, UK

Main Phone: 0303 123 7300

Visit the Buckingham Palace Website

View Buckingham Palace on Google

Latitude: 51.501364

Longitude: -0.14189

Did you know that Buckingham Palace rates 4.5/5 based on 142426 total ratings?

Reviews for Buckingham Palace
Kate Benton

Kate Benton


3 months ago

Wow what can I say. We got tickets for the gardens. Entry was via the mews. Security took the longest part of the whole visit. It is very easy to walk round. Very colourful, very neat. Staff very friendly. Always willing to chat. Guided tours were available. Food was good had 2 gluten free cakes on offer which made my day. Wasn't to badly priced. The shop was brilliant

Ben Fou

Ben Fou


2 months ago

It’s the most visited sites in London, a must visit location in London. Beautiful architecture. The fences are beautiful as well, black and gold. Don’t forget to see the changing of the guards. If you like more option, try to buy a ticket to access the Buckingham gardens. Beautiful Royal Garden.

Daniel Wishnia

Daniel Wishnia


a week ago

Very important place to visit, an icon of this city. To see the guards change parade, come 30 minutes before and get a good spot. The place is very close to the park so it is nice to walk around and see the building from different angles. We had a very nice time, as you can see in the pictures. Go to the website to know the Change of Guards dates. I very much recommend.

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