Secondary Glazing Belgravia

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 Belgravia.

Over 129 4.9-Star Reviews

Call now 020 8523 3210Contact Us now

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 Belgravia With The Strongest Guarantee

If you’re looking for secondary glazing in Belgravia 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 Belgravia

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) Belgravia

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 Belgravia

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 Belgravia

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 Belgravia

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 Belgravia

Photo Courtesy of: Eccleston Yards

Eccleston Yards

Address: 21 Eccleston Pl, London SW1W 9AZ, UK

Main Phone: 020 7312 6360

Visit the Eccleston Yards Website

View Eccleston Yards on Google

Latitude: 51.4936436

Longitude: -0.1482512

Did you know that Eccleston Yards rates 4.6/5 based on 210 total ratings?

Reviews for Eccleston Yards



a week ago

Nice little square, which I believe few knows the existence. Happy experience finding here a Sunday market




4 weeks ago

Went to yard to start Belgravia in bloom. Only one floral arrangement there which was beginning to wilt. Downloaded map for other areas which was a lovely walk and beautiful flower arrangements outside various establishments.

Jos Brown

Jos Brown


2 weeks ago

What a lovely way to spend a Sunday. Music, good food and lovely stall holders.

Photo Courtesy of: Cadogan Hall

Cadogan Hall

Address: 5 Sloane Terrace, London SW1X 9DQ, UK

Main Phone: 020 7730 4500

Visit the Cadogan Hall Website

View Cadogan Hall on Google

Latitude: 51.4937996

Longitude: -0.1570108

Did you know that Cadogan Hall rates 4.6/5 based on 1900 total ratings?

Reviews for Cadogan Hall
Stephen Appelbee

Stephen Appelbee


2 weeks ago

Fabulous location. It's great to be back listening to live music and the front row of the gallery is the best place to appreciate it. Resident orchestra is the Royal Philharmonic; what more do you want?!

Lorraine Coughlan

Lorraine Coughlan


in the last week

Recently saw The Manfreds at this venue and was really impressed. The bar was comfortable & reasonably priced (around £24 for a bottle of chardonnay). Was so impressed we have booked for another show.

Victoria Kingham

Victoria Kingham


7 months ago

I love Cadogan Hall - intimate atmosphere but lovely hall, warm, with acoustics as good as any in London. Fantastic eclectic choice of concerts and friendly, tolerant, knowledgeable staff. You can even take your drinks back in after the interval! The most civilised concert hall in London.

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