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# City Sound Ltd: Secondary Glazing Manufacturers, Trade Supply and Installation

## Sitemaps
[XML Sitemap](https://citysoundglazing.co.uk/sitemap_index.xml): Includes all crawlable and indexable pages.

## Posts
- [City Sound Secondary Glazing: A Trusted Family Business with Unmatched Reputation](https://citysoundglazing.co.uk/city-sound-secondary-glazing-a-trusted-family-business-with-unmatched-reputation/): City Sound Secondary Glazing is not just another glazing company; we are a name that carries weight, trust, and decades of consistent excellence. In an industry that is often plagued by unreliability, inconsistent workmanship, and fleeting operators, Citysound has become a beacon of integrity, craftsmanship, and long-standing relationships. Our unique position as a family-run business has been key to our success, and our reputation is what truly sets us apart. Many valuable lessons have been learnt over the past 56 years, and we do not like making the same mistakes twice.
- [The History of Secondary Glazing and Double Glazing](https://citysoundglazing.co.uk/the-history-of-secondary-glazing-and-double-glazing/): In the early days of modern construction, buildings were often draughty and inefficient. Cold air would pour through gaps in the walls around windows, making heating homes more challenging.
- [The Ultimate Guide to Secondary Glazing Repairs: Everything You Need to Know](https://citysoundglazing.co.uk/secondary-glazing-repairs-everything-you-need-to-know/): Secondary glazing is a popular option for homeowners looking to improve insulation, reduce noise, and enhance security. But like any other component of your home, it may require repairs over time. This comprehensive guide will walk you through everything you need to know about secondary glazing repairs.
- [Does City Sound Supply Only to the Trade?](https://citysoundglazing.co.uk/does-city-sound-supply-only-to-the-trade/): When it comes to high-quality window and glazing products, few companies offer the same level of expertise and dedication to trade professionals as City Sound. For years, City Sound has been a trusted name in the world of glazing, providing bespoke windows and glass solutions tailored specifically to the trade industry.
- [Can Secondary Glazing Reduce UV Rays?](https://citysoundglazing.co.uk/can-secondary-glazing-reduce-uv-rays/): Whether at home or at work in your commercial premises, feeling the sun’s powerful rays radiating through the windows may be a concern. You may wonder whether you can suffer sunburn through the window. Or, whether the rays can cause damage to items inside your home or business. Crucially, you may want to know how you can protect your property by reducing the UV rays that enter it. Fortunately, secondary glazing can help with this by actively reducing UV rays.
- [London Noise Pollution: The Health Impacts and What You Can Do](https://citysoundglazing.co.uk/london-noise-pollution-the-health-impacts-and-what-you-can-do/): First, let’s clear up any confusion about noise pollution. This term simply refers to any unwanted, annoying, or harmful noise.
- [Noise Disturbed Sleep – How does it affect us and how can secondary glazing help?](https://citysoundglazing.co.uk/noise-disturbed-sleep-how-does-it-affect-us-and-how-can-secondary-glazing-help/): Well, you would not be alone, studies show that the average adult loses more than 501 hours of sleep a year due to noise disturbance – the equivalent of nearly 63 full eight-hour long nights. 
- [EPC Ratings: Minimum Standards Changing in the UK and How Secondary Glazing Can Help](https://citysoundglazing.co.uk/epc-ratings-minimum-standards-changing-in-the-uk-and-how-secondary-glazing-can-help/): An EPC provides estimated energy costs and recommendations for improving Energy Performance. Higher EPC ratings of A to C indicate lower energy bills and carbon emissions and can bring about many benefits for the property itself, including an increase in value by up to 19.6%, and can even result in a declined mortgage application from some lenders.
- [Is Secondary Glazing Subject to FENSA/CERTASS Certification?](https://citysoundglazing.co.uk/is-secondary-glazing-subject-to-fensa-certass-certification/): When installing new windows and doors, ensuring compliance with local building regulations is essential. Certifications such as the FENSA (the Fenestration Self-Assessment Scheme) and CERTASS (Certification and Self Assessment) guarantee that registered contractors are qualified to work on a building according to current building regulations and provide Building Regulation Compliance Certificates with no extra cost to the customer. Here we're going to answer if secondary glazing is subject to the certifications as well as everything else you need to know before undertaking a secondary glazing project.
- [Aluminium vs Timber Frames vs Modern uPVC – Which is Best for Secondary Glazing?](https://citysoundglazing.co.uk/aluminium-vs-timber-frames-vs-modern-upvc-which-is-best-for-secondary-glazing/): With secondary glazing, you have quite a bit of choice over the materials you use. uPVC is one option, but you can also get frames made of aluminium and timber. 
- [Glass vs Acrylic – Which is better for Secondary Glazing?](https://citysoundglazing.co.uk/glass-vs-acrylic-which-is-better-for-secondary-glazing/): There are many benefits associated with installing secondary glazing within your home or commercial property. For example, it can provide you with enhanced thermal insulation, stopping heat from escaping the home and lowering your energy bills consequently. If you live in a noisy area, they can also improve noise insulation, allowing you to get a good night's sleep.
- [Demystifying the Mystery: Why Secondary Glazed Windows Steam Up on the Outside](https://citysoundglazing.co.uk/demystifying-the-mystery-why-secondary-glazed-windows-steam-up-on-the-outside/): Secondary glazed windows can be a great addition to any home, offering improved insulation and noise reduction. However, if you've noticed that these windows steam up on the outside, you may be wondering what's causing this frustrating issue. In this article, we will demystify the mystery and shed light on why secondary glazed windows sometimes steam up.
- [The History of Secondary Glazing](https://citysoundglazing.co.uk/the-history-of-secondary-glazing/): Secondary Glazing is fairly recent in the context of buildings and architecture. It was only in the 19th century that we started to use secondary glazing. Double glazing is now the norm in new homes, with some even benefiting from triple glazing. However, there are still plenty of homes lacking double glazing. In some cases, this can be due to concerns about altering the character of historic buildings. Secondary glazing can be used to provide an extra layer of insulation to existing windows, avoiding the need to replace windows in order to add double glazing. The character of the property can be maintained while the insulation and energy efficiency are improved.
- [Aluminium Frames Or Wooden Frames?](https://citysoundglazing.co.uk/aluminium-frames-or-wooden-frames/): (Source: City Sound Glazing)
- [Why London Residents And Businesses Should Get Secondary Glazing](https://citysoundglazing.co.uk/why-london-residents-and-businesses-should-get-secondary-glazing/): Typically, people use secondary glazing to reduce heat loss and noise pollution. However, it is also a method for boosting home security.
- [How much noise reduction can I expect from adding secondary glazing?](https://citysoundglazing.co.uk/how-much-noise-reduction-can-i-expect-from-adding-secondary-glazing/): If you’re trying to find the best way to reduce noise in your home and keep all of those outside noises, outside, then secondary glazing might be something you’re interested in. Your windows play a vital part in keeping your home both quiet and warm, and it’s important that you’re keeping them up to date if you want peace and comfort while you’re home.
- [What causes condensation on windows and how to stop it](https://citysoundglazing.co.uk/what-causes-condensation-on-windows-and-how-to-stop-it/): Condensation is a very common problem that affects millions of homes throughout the UK. If you have noticed water droplets streaming down the inside of your windows, it is important to take control of the situation ASAP.
- [5 simple steps to have secondary glazing installed on listed buildings](https://citysoundglazing.co.uk/5-simple-steps-to-have-secondary-glazing-installed-on-listed-buildings/): Living in heritage properties comes with a wealth of benefits, but your home’s status can cause a few obstacles when it comes to making improvements. If looking to update the windows, secondary glazing listed buildings are usually the answer.
- [Secondary Glazing: Should You Select A Fixed Or Removable Solution?](https://citysoundglazing.co.uk/secondary-glazing-should-you-select-a-fixed-or-removable-solution/): Image
- [PVC secondary glazing vs Aluminium secondary glazing – which is the best?](https://citysoundglazing.co.uk/pvc-secondary-glazing-vs-aluminium-secondary-glazing-which-is-the-best/): Pexels - CC0 Licence
- [The Peace of Mind of Secondary Glazing](https://citysoundglazing.co.uk/the-peace-of-mind-of-secondary-glazing/): There’s much to love about secondary glazing, the affordable and appealing alternative to double glazing, including the peace of mind that it can bring. In this blog, we’ll run through just what it can bring to your home experience, including increasing your window security, making your home more peaceful, and reducing the impact of common home issues. 
- [SME – UK enterprise Awards: Best Secondary Glazing Contractor 2022 – London](https://citysoundglazing.co.uk/sme-uk-enterprise-awards-best-secondary-glazing-contractor-2022-london/): CitySound Limited (CitySound) is a manufacturer and installer of bespoke secondary glazing. This a service offered to residential clients, small to large commercial projects, and also to the trade on a supply-only basis.
- [Common Myths About Secondary Glazing Debunked](https://citysoundglazing.co.uk/common-myths-about-secondary-glazing-debunked/): You may have heard of secondary glazing, but have you heard the right things? For reasons that aren’t entirely clear, there are plenty of secondary glazing myths going around, and they’re having negative consequences for homeowners who may otherwise benefit from having them installed at their properties. After all, if you’ve only got incorrect information, then you’ll probably make an incorrect decision!
- [Secondary Glazing vs Triple Glazing: Which Is Better?](https://citysoundglazing.co.uk/secondary-glazing-vs-triple-glazing-which-is-better/): When you are considering secondary glazing vs triple glazing, purely having an additional pane on your existing windows can improve the overall performance of the windows. A very good example is when you are living in a listed building; triple glazing or double glazing cannot replace the original window design in listed buildings, which is usually single-glazed, and this is where secondary glazing can provide amazing results. 
- [DIY Secondary Glazing: Is It Worth It?](https://citysoundglazing.co.uk/diy-secondary-glazing-is-it-worth-it/): If you are looking for ways to improve your windows, you may have come across DIY secondary glazing kits. Secondary glazing is a great way to improve the energy efficiency of homes that come with single-glazed windows.
- [The Noise Reduction Benefits of Secondary Glazing](https://citysoundglazing.co.uk/the-noise-reduction-benefits-of-secondary-glazing/): Image from Pexels - CC0 Licence
- [How Secondary Glazing Improves Thermal Insulation](https://citysoundglazing.co.uk/how-secondary-glazing-improves-thermal-insulation/): Image from Pexels - CC0 Licence
- [Is Secondary Glazing For Listed Buildings The Right Choice For Your Property?](https://citysoundglazing.co.uk/is-secondary-glazing-for-listed-buildings-the-right-choice-for-your-property/): Pexels Source CCO License
- [Secondary Glazing Cost Explained: How Much Will You Need To Pay For This Home Upgrade? (Prices correct as of Summer 2022)](https://citysoundglazing.co.uk/secondary-glazing-cost-explained-how-much-will-you-need-to-pay-for-this-home-upgrade-prices-correct-as-of-summer-2022/): Pexels Source CCO License
- [Remarkable Benefits of Secondary Glazing for your Property](https://citysoundglazing.co.uk/remarkable-benefits-of-secondary-glazing-for-your-property/): It doesn’t matter if you intend to install secondary glazing in your period home or whether you plan to upgrade your modern new-build because this type of glazing can provide you with a vast range of benefits. If you want to find out more about how secondary glazing can benefit you as a property owner in the UK, then simply take a look below.
- [Secondary Glazing for Sash Windows with Shutters](https://citysoundglazing.co.uk/secondary-glazing-for-sash-windows-with-shutters/): Secondary glazing fitted to sash windows with shutters already installed over then has become an ever-growing enquiry over the years. 
- [How to choose a good secondary glazing installer](https://citysoundglazing.co.uk/how-to-choose-a-good-secondary-glazing-installer/): When you want secondary glazing installed at your property, it’s not enough just to understand what this will do for you – it’s not enough to know that you will save on your heating and energy bills, or that you could improve the value of your home. Something that you will also need to take into account is finding a good secondary glazing installer. There are many out there, but not all are going to do a good job. Here are some of the things you should be looking out for; remember, taking your time to find a good secondary glazing installer is definitely worth it.
- [Aluminium frames or Wooden frames?](https://citysoundglazing.co.uk/aluminium-frames-or-wooden-frames-old/): At City Sound Glazing we only work with Aluminium frames for several reasons. Many property owners have their own preferences when it comes to window frames, and there are benefits to each material, be that aluminium, wood or uPVC.To explain the pros and cons of aluminium and wooden frames we go into more detail below to help you decide which one would be a better fit for your property.
- [Why you need Secondary Glazing in the Summer](https://citysoundglazing.co.uk/why-you-need-secondary-glazing-in-the-summer/): When we think about secondary glazing, we have images of being wrapped up inside trying to stay warm in the freezing cold winter. There is a myriad of benefits when it comes to secondary glazing. Not only is it one of the cheapest ways to make your warmer, but it also makes your home more efficient.
- [Using Secondary Glazing for Heritage conservation](https://citysoundglazing.co.uk/using-secondary-glazing-for-heritage-conservation/): We all value possessions from our past as they serve as a reminder of a certain period in our lives, helping to keep them alive, not only for ourselves, but to teach our children about a time and age they will never experience. The preservation of historical buildings works on exactly the same principle – keeping alive our country’s history for future generations to understand, appreciate and enjoy.
- [When should I have Secondary Glazing installed](https://citysoundglazing.co.uk/when-should-i-have-secondary-glazing-installed/): Your windows are often a good way to gauge the condition of your home overall. There are a number of tell-tale signs that will reveal whether or not you are in need of an upgrade to improve not only the aesthetic appeal but your overall quality of life.
- [What is the process of installing Secondary Glazing in Commercial properties](https://citysoundglazing.co.uk/what-is-the-process-of-installing-secondary-glazing-in-commercial-properties/): Installing new windows in your property is a quick and easy way to give it a new lease of life. This is especially true of commercial buildings which may date back some time, and if situated near busy roads can accumulate quite a thick layer of dirt and grime. Sometimes the aesthetics may not be your main concern but perhaps the windows need to be changed for health and safety or to improve energy efficiency. This is particularly relevant for those working towards the new EPC regulations that come into force in April 2018.
- [Choosing the right Secondary Glazing system](https://citysoundglazing.co.uk/choosing-the-right-secondary-glazing-system/): Knowing which secondary glazing system is the right one for your windows is not just a case of simply picking from a list. The size and shape are among many factors that will identify which one will produce the benefits you are looking for.
- [A brief history of Sash windows](https://citysoundglazing.co.uk/a-brief-history-of-sash-windows/): The sash window design feels quintessentially British. With so many sturdily built Victorian and Georgian houses still standing across the country today, sash windows have remained a prominent and elegant feature that has played a key part in defining the history of British architecture.
- [Energy efficiency in commercial buildings](https://citysoundglazing.co.uk/energy-efficiency-in-commercial-buildings/): If you have acquired the leasehold for your commercial property, then you are no doubt in a strong position when it comes to controlling not only your finances but the sustained growth of your company within the premises.
- [Secondary Glazing Bay Window](https://citysoundglazing.co.uk/secondary-glazing-bay-window/): Hi, I'm Andy from City Sound and I'm going to be talking about secondary glazing on bay windows.
- [FAQs about listed buildings](https://citysoundglazing.co.uk/faqs-about-listed-buildings/): While living in a grade listed building offers a whole range of prestigious advantages, knowing how and what you can alter in terms of the structural design can prove to be a confusing nightmare at times. It is always useful to have as much information to hand before you make a request for consent and given our experience at City Sounds, we thought it would make perfect sense to bring together the various questions we have been asked over the years into one place.
- [Sounds like trouble: New research suggests a link between noise pollution and health](https://citysoundglazing.co.uk/sounds-like-trouble-new-research-suggests-a-link-between-noise-pollution-and-health/): Medical professionals have long suspected that long term exposure to high levels of noise pollution can be bad for your health. Now research published in the British Medical Journal this month has made an apparent statistical connection between aircraft noise and an increased risk of stroke, heart or circulatory disease.
- [Noise Pollution; The Facts](https://citysoundglazing.co.uk/noise-pollution-the-facts/): But what is considered noise? What can I do about it? Who should I talk to?
- [Building, selling or renting your property?](https://citysoundglazing.co.uk/building-selling-or-renting-your-property/): Energy-saving has been the topic of conversation this year. What with the Government putting additional pressure on energy companies to help the country run more efficiently, saving energy is something that seems to be at the front of everyone’s minds.
- [A guide to planning permission for windows](https://citysoundglazing.co.uk/guide-planning-permission-windows/): Planning permission might sound like a daunting prospect and a potential obstacle in the journey to achieve your perfect home. You might have heard horror stories regarding long waits and ultimately a disappointment.
- [The 7 Top Benefits of Secondary Glazing](https://citysoundglazing.co.uk/the-7-top-benefits-of-secondary-glazing/): Most modern homeowners may be under the impression that double glazing is the only way to meet the demands expected of their windows. However, secondary glazing may be a less well-known technique but can prove more effective, cheaper and less obtrusive than double glazing.
- [Top tips on how to care for your windows and keep them looking spick and span](https://citysoundglazing.co.uk/top-tips-on-how-to-care-for-your-windows-and-keep-them-looking-spick-and-span/): Firstly, don’t spread the problem! Make sure you quickly collect any cobwebs, dust or other uninvited eyesores from the window sills, edges and frames before you start on the glass. Otherwise, you will only be spreading these around the windows and dirtying your cloth before you start. A vacuum cleaner can be really helpful here and a cloth wrapped around a screwdriver can be a great trick to reach right to the edges.
- [Secondary Glazing FAQs](https://citysoundglazing.co.uk/secondary-glazing-faqs/): You may have come across the concept of secondary glazing whilst looking for a solution to your window problems, or perhaps looking to upgrade. But as a less renowned alternative to double glazing, you may be wondering if it is the best solution for you. That is why we have pulled together a handful of frequently asked questions to help address any of your queries or concerns.
- [Care and repair of your period property windows](https://citysoundglazing.co.uk/care-and-repair-of-your-period-property-windows/): When it comes to the upkeep of period windows, little cracks and breaks can be a common occurrence, due to natural age-related wear and tear, particularly in timber frames. Glasswork used to be an expensive and specialist craft, which often meant smaller fragments were made and leading used to patchwork these together. Although a beautiful and timeless style, this can also fall victim to weathering and disrepair. These are normally relatively easy to fix, but should always be mended in consultation with a conservation specialist.
- [Secondary Glazing Noise Reduction](https://citysoundglazing.co.uk/secondary-glazing-noise-reduction-video/): Hi, I’m Andy from City Sound Secondary Glazing and today we’re going to be talking about noise reduction. How do I get good noise reduction on my period windows?
- [Why secondary glazing as opposed to double glazing?](https://citysoundglazing.co.uk/why-secondary-glazing-as-opposed-to-double-glazing/): There could be any number of reasons why you might be considering updating and improving the windows in your home or business. Perhaps the heating bills are continuing to creep up year after year. Or the noise from next door has finally proven too much. You might even be aiming to add value to your existing property.
- [What Everyone Needs To Know About Reducing Heat Loss In The Home And Saving On Heating Bills](https://citysoundglazing.co.uk/what-everyone-needs-to-know-about-reducing-heat-loss-in-the-home-and-saving-on-heating-bills/): However, that doesn’t mean you don’t have a choice of how to spend your money when it comes to saving on heating bills. There are plenty of different ways for you to improve your energy efficiency, enabling you to have the choice to make both short term and long term improvements based on your personal budget and preference.
- [How To Be Environmentally Friendly By Secondary Glazing Your Windows](https://citysoundglazing.co.uk/how-to-be-environmentally-friendly-by-secondary-glazing-your-windows/): With residential properties, in particular, many studies and statistics are suggesting eco-friendly homes will be worth more money than standard homes in the future.
- [Increase Your Property Security with Secondary Glazing](https://citysoundglazing.co.uk/increase-your-property-security-with-secondary-glazing/): Secondary glazing is a product that can provide the homeowner with a high level of property security without the visual issues many alternative security solutions can have.
- [The History and Grades of Listed building](https://citysoundglazing.co.uk/the-history-and-grades-of-listed-building/): The devastation caused by German bombers changed that situation dramatically.
- [Damp and Listed Buildings](https://citysoundglazing.co.uk/damp-and-listed-buildings/): Damp patches can occur in any historic building. It can appear on both exterior and interior walls. This is not a major problem as it can be dealt with quickly and easily. All it takes is some simple maintenance and understanding of the nature of historic buildings.

## Pages
- [Secondary Glazing Thermal Insulation](https://citysoundglazing.co.uk/secondary-glazing/secondary-glazing-thermal-insulation/): When you own a property, whether this be your own home or commercial premises, you want to do what you can to ensure it’s in the best condition. One of the most important elements of this is your windows and that is where secondary glazing comes in. Sometimes known as secondary double glazing, it's essentially when a second window is installed in front of the first, thus creating an additional barrier between your home and the outside.
- [Secondary Glazing Noise Reduction](https://citysoundglazing.co.uk/secondary-glazing/secondary-glazing-noise-reduction/): If you want to find out how much installing secondary glazing on your property will cost, get in touch with our team at 020 8523 3210. You can also read the advice and guides on our website or view our gallery of completed projects to see how your property will look after secondary glazing noise reduction.
- [Secondary Glazing in London](https://citysoundglazing.co.uk/secondary-glazing-london/): Secondary glazing (or secondary double glazing) is the addition of a slim, second window fitted inside your existing window.
- [Cookies Policy](https://citysoundglazing.co.uk/cookies-policy/): BY CONTINUING TO USE OUR SITE AND SERVICES, YOU ARE AGREEING TO THE USE OF COOKIES AND SIMILAR TECHNOLOGIES FOR THE PURPOSES WE DESCRIBE IN THIS COOKIES POLICY. IF YOU DO NOT ACCEPT THE USE OF COOKIES AND SIMILAR TECHNOLOGIES, DO NOT USE THIS SITE.
- [Disclaimer](https://citysoundglazing.co.uk/disclaimer/): This Disclaimer forms part of and must be read in conjunction with, website Terms and Conditions. We reserve the right to change this Disclaimer at any time.
- [Terms & Conditions](https://citysoundglazing.co.uk/website-terms/): This Agreement was last revised on June 29th, 2021.
- [Casement (Hinged) Secondary Glazing](https://citysoundglazing.co.uk/casement-hinged-secondary-glazing/): A versatile, efficient and inexpensive style of secondary glazing that can be side or top-hung. This is a strong system with slender sightlines, allowing full and easy access to the outer windows or doors.
- [Fixed Lift Out](https://citysoundglazing.co.uk/fixed-lift-out/): 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.
- [Horizontal Sliding Windows](https://citysoundglazing.co.uk/horizontal-sliding-windows/): 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.
- [Sash Windows (Vertical sliding)](https://citysoundglazing.co.uk/sash-windows-vertical-sliding/): 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.
- [Contact Us](https://citysoundglazing.co.uk/contact-us/): Use this form to enquire about our services and we’ll get back to you as soon as we can.
- [Commercial Grade System Photos](https://citysoundglazing.co.uk/city-sound-gallery/commercial-grade-system-photos/): Commercial secondary glazing (Sliding widows) fitted. Glazed with thick acoustic glass for noise reduction (Sloane Square, London)
- [Casement (Hinged) Units Photos](https://citysoundglazing.co.uk/city-sound-gallery/casement-hinged-units-photos/): Casement (hinge) windows fitted to a bat window; Thermal insulation (Richmond, London)
- [Fixed / Lift Out Windows Photos](https://citysoundglazing.co.uk/city-sound-gallery/fixed-lift-out-windows-photos/): Secondary glazing lift out windows fitted over beautiful steel framed windows (East London, E1)
- [Horizontal Sliding Windows Photos](https://citysoundglazing.co.uk/city-sound-gallery/horizontal-sliding-windows-photos/): Secondary glazing fitted over this Georgian period window; Thermal insulation (Hampstead, North West london)
- [Sash windows (Vertical sliding) Photos](https://citysoundglazing.co.uk/city-sound-gallery/sash-windows-vertical-sliding-2/): Secondary sash windows fitted over period windows (Islington, London)
- [Our Gallery](https://citysoundglazing.co.uk/city-sound-gallery/): Choose from the galleries below to see a selection of our work. We specialise in bespoke secondary glazing for luxury homes, historical and listed buildings, and prestige offices in London and surrounding areas. For more information phone one of our expert advisors on 020 8523 3210.
- [Advice & Guides](https://citysoundglazing.co.uk/city-sound-advice-guides/): by City Sound
- [Secondary Glazing Suppliers](https://citysoundglazing.co.uk/trade-supply/): City Sound welcomes any enquiry from the trade for supply only of our secondary glazing. Our in-house factory manufactures a substantial volume, enabling us to offer trade clients (on a supply-only basis) a 40% discount on enquiries. Our timely delivery of orders and impeccable quality control make us London’s most competitive trade supplier.
- [Commercial Clients](https://citysoundglazing.co.uk/commercial-clients/): Dealing with commercial clients and projects needs special care and know-how. Whether you are 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.
- [Residential Customers](https://citysoundglazing.co.uk/residential-customers/): Serving our clients with honesty and integrity since 1968, our reputation speaks for itself. We have residential customers who have been using us for years, referring us to friends and family.
- [Secondary Glazing for Listed Buildings](https://citysoundglazing.co.uk/listed-buildings/): When a building has been listed it is protected by law and Listed Building Consent might need to be obtained before any changes are made to it.
- [Window Styles](https://citysoundglazing.co.uk/window-styles/): 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.  Please follow the link below for more information. Give us a call at 020 8523 3210 or email us for more information on all the other style options we offer.
- [About Us](https://citysoundglazing.co.uk/about-us/): 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?
- [Secondary Glazing](https://citysoundglazing.co.uk/secondary-glazing/): Secondary glazing (sometimes referred to as secondary double glazing) is a term used to describe the process of installing a second window internally within the inside of a property.
- [Home](https://citysoundglazing.co.uk/): Welcome to London’s Finest Boutique Secondary Glazing Company
- [Privacy Policy](https://citysoundglazing.co.uk/privacy-policy/): Last updated