Secondary Glazing Blackfriars
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 Blackfriars.
Over 129 4.9-Star Reviews
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.

We provide Secondary Glazing in Blackfriars With The Strongest Guarantee
If you’re looking for secondary glazing in Blackfriars 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.

Secondary Glazing FAQ’s
Does Secondary Glazing actually work?
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Secondary Glazing for Listed Buildings Blackfriars
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) Blackfriars
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 Blackfriars
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 Blackfriars
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 Blackfriars
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 Blackfriars
Photo Courtesy of: kfLeung HK
Millennium Bridge
Address: Thames Embankment, London SE1, UK
Main Phone: 020 7606 3030
Visit the Millennium Bridge Website
View Millennium Bridge on Google
Latitude: 51.5095291
Longitude: -0.0985425
Did you know that Millennium Bridge rates 4.6/5 based on 12404 total ratings?
Reviews for Millennium Bridge
Mike Day
5/5
in the last week
Fantastic views either side of the Thames and both banks. Foot access connecting St Paul's to Tate Modern and the Globe Theatre. Not good in wind, hail and rain. Great in the sun and at night. Enjoy.
John Michael Canita
4/5
5 months ago
It's best to visit this place at night. When everything is dark , and the bridge is lit. Add on to that is the picturesque St. Paul's cathedral in the background. This modern architecture offers not just functionality, but something for the eyes to enjoy.
Photo Courtesy of: Volha Melgaard
St. Paul's Cathedral
Address: St. Paul's Churchyard, London EC4M 8AD, UK
Main Phone: 020 7246 8350
Visit the St. Paul's Cathedral Website
View St. Paul's Cathedral on Google
Latitude: 51.5138453
Longitude: -0.0983506
Did you know that St. Paul's Cathedral rates 4.6/5 based on 30934 total ratings?
Reviews for St. Paul's Cathedral
Brandon Fathy
5/5
2 weeks ago
Well worth the price of admission! A must-see on your first trip to London, welcoming to all denominations. St Paul's iconic dome is a London landmark and was London's tallest structure from 1710 to 1963. Designed by Christopher Wren, St Paul's is the most iconic example of English Baroque architecture. I appreciate all of the modern art that has been installed and incorporated into the cathedral, which appeals to a secular audience. the basements include the burials of some important Britons, with galleries and gift shop. If able, I highly recommend climbing its many steps to its 365ft observation deck with 360 degree views of London.
Natasha Gjorevska
5/5
a month ago
Beautiful cathedral with rich history. Be prepared to be immersed in a self reflective experience, while also contemplating historic events. Your ticket can be booked online and it comes with an audio guide set, which takes you through the history of the cathedral. You need to visit on a weekend if you want to climb up to both the stone and the golden gallery. The whispering gallery is still closed due to safety precautions. There is a lift but it takes you down to the crypt. Thus, you need to climb up around 500 stairs up to the galleries. The steps become pretty narrow the higher you go. Photos without flash are allowed. There are toilets and a water station to refill your bottle. They are next to the shop. You can easily spend 4 hours if you take time to listen to the entire audio guide and enjoy wandering around the cathedral. You can only go around the galleries once, so make sure to enjoy the view while you can. You will absolutely love the experience!
David Yeates
4/5
2 weeks ago
Very impressive interiors and good audio guide comes with the entrance fee. The floor and Crypt were open, but sadly not the galleries when we visited in early October 2020. That would have made a 5 star visit. There are toilets and a gift shop in the Crypt and the surrounding gardens with plenty of benches provide a good picnic and resting place on a busy days sightseeing.
Photo Courtesy of: St Bride's Church
St Bride's Church
Address: Fleet St, London EC4Y 8AU, UK
Main Phone: 020 7427 0133
Visit the St Bride's Church Website
View St Bride's Church on Google
Latitude: 51.5137695
Longitude: -0.105544
Did you know that St Bride's Church rates 4.6/5 based on 269 total ratings?
Reviews for St Bride's Church
Thomas Quinn
4/5
2 weeks ago
I suppose this place might be eclipsed by it's larger neighbor church but it is still very charming. It's interesting to see the crypt and medieval church below. It also has it's famous spire that influenced wedding cakes.
Marco
1/5
2 weeks ago
Plain little Anglican church. The courtyard is probably good for office workers on lunch break.
Art Tucker
5/5
2 months ago
A lovely, quiet church, tucked away in central London. Known as the Journalist's Church, it had many touching dedications to journalists who have died in service to their trade and practice.
Photo Courtesy of: Henny Brik
Temple Church
Address: Temple, Temple, London EC4Y 7BB, UK
Main Phone: 020 7353 8559
Visit the Temple Church Website
Latitude: 51.5132637
Longitude: -0.1102647
Did you know that Temple Church rates 4.6/5 based on 1832 total ratings?
Reviews for Temple Church
Alex Kaye
5/5
a week ago
A stunning church with 800 years of history. Spent a couple of hours there and really enjoyed it. (free autumn organ recitals at 1pm Wednesdays).
Elias Fiore
5/5
3 weeks ago
One of the 4 ancient rounded churches in the UK, this is perhaps the most important. If you are interested in Templar spirituality, you cannot miss this landmark
A Thornton
5/5
a month ago
Beautiful and interesting church. Definitely worth a visit if you are near this part of town. Have a walk through the Inns to Inner Temple Garden while you are there.
Photo Courtesy of: St Dunstan-in-the-West
St Dunstan-in-the-West
Address: 186a Fleet St, London EC4A 2HR, UK
Main Phone: 020 7405 1929
Visit the St Dunstan-in-the-West Website
View St Dunstan-in-the-West on Google
Latitude: 51.514215
Longitude: -0.110211
Did you know that St Dunstan-in-the-West rates 4.4/5 based on 56 total ratings?
Reviews for St Dunstan-in-the-West
Dina Sikorska
5/5
2 months ago
The Guild Church of St Dunstan-in-the-West is in Fleet Street in the City of London. It is dedicated to Dunstan, Bishop of London and Archbishop of Canterbury. The church is of medieval origin, although the present building, with an octagonal nave, was constructed in the 1830s to the designs of John Shaw.
Theydon Matthews
5/5
5 months ago
Wonderful place to worship among lovely people Fabulous Tuesday afternoon Mass every week