Soundproof Sash Windows

Not all soundproof sash windows are the same. If you’re looking for the best way to soundproof a property, our bespoke noise reduction timber windows can achieve a dramatic noise reduction, far greater than what is possible with ‘regular’ double glazing. We’re talking up to 45dB. (Scroll down this page to hear what that sounds like.)

If you would like to assess the different soundproofing options before you commit to a particular window supplier, we can support you on our initial visit.

Is this what you are experiencing?

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Plane Noise

Being on a flightpath has been shown to seriously impact quality of life.

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Road Noise

A noisy neighbourhood affects both the appeal and value of any property.

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Sleepless Nights

The cumulative affect of not sleeping can badly affect those of all ages.

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Ill Health

Excessive noise can lead to cardiovascular disease and high stress.

Is this what you are seeking?

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An Urban Haven

It’s now possible to create the quietest spaces in the noisiest places

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Sound Sleep

For many it is an absolute prerequisite to being able to lead a fulfilling life

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Increased Property Value

Transform the appeal, value and day-to-day experience of any property.

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Improved Health

Tranquility is proven to reduce the risk of stroke and heart attack.

Transform the experience within any property

Would you like to bring a new level of tranquility to a particular property? Expect to be surprised by the dramatic difference we can make with acoustic soundproofing.

Noise harms. According to the World Health Organisation, those living with noise pollution of over 55dB are likely to suffer health problems. In London, this affects 1.6 million people.

Tranquility heals. Fitting a property with noise reduction windows can have a hugely healing impact on whoever lives or stays there.

You can reduce noise by up to 45dB. This far outperforms what’s possible with ‘regular’ double glazing.

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So why choose us?

Hugo Carter is the UK’s leading provider of noise reduction windows; we call them ‘Silent Windows’. What sets us apart? From what our clients tell us, we believe it’s down to three things:

Our Approach. We won’t sell to you. Our Initial Visit is from a specialist, not a salesman. On that visit, they’ll help you understand exactly what you need, walk you through your best noise reduction options, and perform a full noise survey.

Our Products. No-one in the UK is able to offer you more advanced ‘noise reduction’ windows, coupled with outstanding craftsmanship. Every window or door is bespoke. Learn more here.

Our Expertise. We understand The Science of Silence. Our surveyors are trained by experts at the Institute of Acoustics. That wisdom goes into every aspect of our service – the initial survey – the pre-installation visit – and the way our team approaches the installation itself.

See 10 Reasons Why to Choose Us Here.

Read our Definitive Guide to Soundproofing your Home Here. 

Every one of our soundproof sash windows is bespoke

Whether you’re a homeowner, a hotelier or an architect, the specific sash windows we’ll create for you will be unique. That’s because, at the outset we don’t just measure the space, we measure the noise. We take into account different logistical factors along with your aesthetic choices.

See which of these statements is the closest fit for you.

“I’m keen to replace like with like… sash with sash.”

“There’s a planning permission issue; I can’t touch the existing windows.”

“I want to know what’ll fit best with this property and also with my refurb ideas.”

“It’s a new build – so I’m open to exploring the very best options.”

Whichever the case, we’re here to talk you through your choices.  Also – see the three scenarios below.

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Sash Window Part
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So why choose our sash windows?

The quality and the ‘fit’ of the products themselves. It’s not just the individuals, materials or the design process that set our windows apart, it’s also the way our designs are based on an in-depth understanding of specific individual needs.

The end-to-end support of experts. From the initial survey to the point of installation, we offer a continuum of expertise from a team that’s been trained by experts at the Institute of Acoustics.

Our range of options. We offer four ranges of sash windows – heritage, conventional, slim, or spring. Also, whether you need a special window feature, a bay window, some type of casing or a specially designed box sash, we can provide it.

All the advantages of hardwood timber. Lasting between 60 and 80 years, they have over two and a half times the life-span of a plastic window. Weather-resistant, our hardwood timber frames will never warp. In addition, they are energy-efficient, easy to repair, completely biodegradable, and very easy to be coloured.

Learn more about what sets all our products apart here.

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With our soundproof sash windows, three different scenarios

Typically, we create new sash windows for one of these scenarios. Understanding these will help our initial conversation.

‘like for like replacement: This is where existing sash windows are replaced by bespoke noise reduction sash windows.

‘high performance replacement: Where a high noise reduction is sought, each sash window can be replaced by a high-performance window that looks like a sash window, but actually opens out like a casement window.

A secondary window: If it is not possible to ‘touch’ the existing sash window – often this will be down to conservation issues, or a landlord’s specifications – then we can look at installing a secondary window.

Hear the difference between a standard window and our Silent Window:

Did you know?

‘The oldest surviving examples of sash windows were installed in England in the 1670s, for example at Ham House.’

Hugo Carter took this design into 21st century with its innovative approach and materials.

How much noise reduction can you achieve with sash windows?

By far the best selling Sash Window in London is our 40dB Silent Sash. By comparison, the single glazed sash windows are only capable of a noise reduction of around 25dB. Furthermore, we are now working on the 45dB model, which is in its final stages of testing.

For more questions visit our FAQ section.

Arrange a FREE visit today.

You will be visited by a specialist who understands the science of silence and who can talk you through your best options and not a salesperson.

We’ll measure the noise levels in different rooms in the property using a specialist noise analyser.

We’ll talk you through your options and the various logistic and aesthetic factors to consider.

We’ll ensure we have a thorough understanding of exactly what you need. (It may vary from the front to the back of the property.)

We will only recommend our own windows if they’re suitable and if we feel you would be delighted with the results.

By agreeing to an Initial Visit, there is no obligation to commit to our service. This is your opportunity to weigh up how good a match we are and to understand your needs and options more fully.

“I honestly didn’t think it was going to make as much difference as it did.”

Jeremy, West London

Step 1 - Initial Enquiry

Before contacting us, please make sure you have certain details to hand. These include: the property location and type (especially if it’s a listed building or in a conservation area), the details of your problem and the kind of windows and glazing you currently have. We will make sure we have enough information to plan an effective initial visit.

For more details of Our Process please see Our Process Explained

Step 2 - Initial Visit (Noise Assessment & Pricing Survey)

An acoustic specialist will talk you through your best options and – using a NTi XL2 Acoustic Analyser – give you an immediate idea of the different noise levels, and advise you on your best options. By agreeing to a Initial Visit there is no obligation to commit to our service; this is an opportunity to understand your needs more clearly.

For more details of Our Process please see Our Process Explained

Step 3 – Quotation & Noise Report

Based on the survey completed during the Initial Visit, our team will email a full costing within 72 hours. We will also provide a valuable Noise Report which explores our problem analysis, the level of noise pollution and our suggested solution. Within another 48 hours, we will follow up with a courtesy call, to ensure everything is clear.

For more details of Our Process please see Our Process Explained

Step 4 - Installation Survey

Once you’ve chosen to proceed with us and paid an initial deposit, we’ll arrange for senior surveyors to visit. By taking accurate ‘to the millimetre’ measurements, we can assess the best method of installation. We’ll also confirm your various aesthetic preferences (eg – which timber, paint colour and ironmongery), and will then pass your order to our factory.

For more details of Our Process please see Our Process Explained

Step 5 - Manufacture Updates

The manufacturing process takes approximately ten weeks.  Every three weeks our customer service team will give you an update so you know how your windows are progressing.

For more details of Our Process please see Our Process Explained

Step 6 - Installation

Two weeks in advance, we’ll provide you with an installation date. For the installation we use an acoustic foam to enhance the noise reduction. At no point will we leave the property unprotected or exposed; if one window comes out, another goes in. The entire installation will be overseen by a single project manager.

For more details of Our Process please see Our Process Explained

Step 7 - Follow Up

One week after the installation, we will follow up with a courtesy call. This to make sure that everything is to your satisfaction, and to answer any questions you have about making the most of your new windows or doors.

For more details of Our Process please see Our Process Explained

Download our noise reduction brochures

To learn more about The Science of Silence, please download our technical brochure.

To learn more about how we can help your clients return to tranquillity, please download our ‘Home Silent Home’ brochure.

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W4 5YA

0203 733 9577


HUGO CARTER LTD., BUILDING 3, 566 CHISWICK HIGH RD, CHISWICK, LONDON W4 5YA | T: 0203 953 5553 | COMPANY NUMBER: 07389105 | VAT NUMBER: GB 160 9746 89 | FENSA: 35698