Soundproof Secondary Windows

Not to be confused with secondary glazing, secondary windows provide a soundproofing solution for properties experiencing high to extremely high levels of noise pollution or those which are listed, where you cannot do anything with existing windows.

Our experienced engineers are here to talk you though the options and guide you through the process on our initial visit.

Is this what you are experiencing?

plane noise icon

Plane Noise

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

car noise icon

Road Noise

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

sleepless nights icon

Sleepless Nights

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

ill health icon

Ill Health

Excessive noise can lead to cardiovascular disease and high stress.

Is this what you are seeking?

urban heaven icon

An Urban Haven

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

sound sleep icon

Sound Sleep

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

increased home value icon

Increased Property Value

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

improved health icon

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.

soundproof secondary windows
Soundproof Secondary Windows

How does it work?

In much the same way as we describe double glazing, the addition of a secondary window increases noise cancelling efficiency by distorting the wavelength that is causing the noise. And, by assessing the source of the noise we can recommend precisely the solution for your property.

The glass itself is of the highest quality. Energy saving and manufactured for maximum noise reduction qualities. The space between the existing unit and the secondary window is also optimized, ensuring the most efficient use of space.

Hugo Carter units feature tilt and turn technology allowing easy opening and closing, left to right, top to bottom and once shut, the unit creates a vacuum preventing heat loss and of course noise pollution.

Frames are designed to sympathetically match existing units and can be manufactured using triple layered pine, noise reducing silicone, acoustic laminates and micro-rubber. Other options include Oak or Larch frames and security, obscure or slim-line glass, as ever with Hugo Carter, the choice is yours.

Soundproof Secondary Windows open

Hear the difference the secondary window provides in this Grade II listed building on Clerkenwell Road in London:

Did you know?

You can achieve the greatest levels of noise reduction by combining performance of your existing window with the secondary soundproof window. Whether you live in a new build, Victorian terrace house or Grade II listed building.

Do I need planning permission for the secondary window in Grade II listed building?

If you live in a Grade II listed building chances are you won’t get planning permission to replace your existing windows with double glazing?

With the secondary soundproof windows you eliminate a need of applying for planning consent and you can keep your existing windows in place to satisfy conservation officers. In the same time you will enjoy quiet, warm and safe home.

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.

Silent Windows Trustpilot
FENSO Registered Company Logo
Hugo Carter Logo
Radisson Blu Logo
Southampton Solent University Logo

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