ABOUT THE SOUNDPROOF WINDOWS
The Soundproof Windows is a London-based acoustician-led specialist in bespoke timber soundproof windows, acoustic doors and high-performance secondary glazing. We work with homeowners, architects and specifiers to solve serious road, rail and aircraft noise problems, particularly in period homes, listed buildings and conservation areas, without compromising the architectural character of the property.
WHO WE ARE
The Soundproof Windows were built around a simple idea: serious noise problems need properly engineered solutions, not generic replacement windows. From the beginning, our focus has been on combining acoustic expertise, technical design and high-quality timber joinery to create windows and doors that perform exceptionally well while still respecting the character of the property.
We are a specialist company with roots in both craftsmanship and acoustics. That combination allows us to take an engineering-led approach to each project, looking carefully at the building, the type of noise and the practical constraints before recommending the most suitable solution. Much of our work involves period homes, listed buildings and conservation areas, where acoustic performance must be achieved without losing the architectural integrity that makes the property special.
WHY CLIENTS CHOOSE US
We are often approached by clients who have already tried standard glazing solutions, spoken to conventional window companies, or are dealing with properties where appearance matters just as much as performance. Our approach is different for a few simple reasons.
Acoustics-led, not sales-led
Our recommendations start with the noise problem, not a standard product list. Clients are guided by specialists who understand acoustic performance and property constraints, rather than pushy sales staff working from a script.
Designed for real noise problems
Road traffic, rail, aircraft and anti-social noise all behave differently. We look at the likely noise source, the building itself, ventilation requirements and possible flanking paths before recommending the most suitable solution.
Heritage-sensitive by design
Much of our work involves period homes, listed buildings and conservation areas, where the acoustic solution must respect the character of the property. Our focus on bespoke timber joinery allows us to balance performance with architectural detail.
More than replacement windows
We do not treat secondary glazing as an afterthought. High-performance secondary windows are a core part of our offering and are often the best solution for listed properties, flats, or homes where full replacement is not appropriate.
Tailored recommendations, not one-size-fits-all sales
Sometimes the best answer is replacement windows. Sometimes it is secondary glazing. Sometimes a combination of both delivers the strongest result. Our role is to recommend the solution that best suits the property, the noise issue and the client’s priorities.
Confidence beyond installation
Our work is designed to perform for the long term. With clear guarantees, careful installation and ongoing support, clients can feel confident not only in the product itself, but in the way the project is delivered.
TRUSTED BY HOMEOWNERS, ARCHITECTS AND SPECIFIERS
Choosing acoustic windows is a significant investment, so trust matters. We make our reputation easy to verify through public reviews, clear guarantees and a transparent process from first assessment through to installation and aftercare.
Trusted through public reviews, recognised standards and a transparent process.

OUR APPROACH
Every property, noise source and client brief is different, so our process begins with understanding the problem properly. We take an acoustics-led, practical approach to each project, looking at the building, the type of noise, and the most suitable route to the right solution.
Initial assessment
We begin by understanding the property, the likely noise source and any planning or design constraints. In many cases, this starts with photos, rough sizes and a desktop review before a site visit is arranged.
Acoustician-led survey
Where needed, a trained acoustician visits the property to assess the existing windows, take measurements and evaluate the noise issue more closely. This allows us to make a considered recommendation based on the property and the problem, rather than relying on a standard sales approach.
Tailored recommendation
We then specify the route best suited to the property and the client’s priorities, whether that is bespoke replacement windows, high-performance secondary glazing, or a combination of both.
Manufacture and detailing
Our systems are designed with both performance and appearance in mind. That means balancing acoustic requirements with timber detailing, heritage sensitivity and the practical realities of the building.
Installation and aftercare
Careful installation is essential to acoustic performance. We focus on getting the details right on site and remain available for aftercare, adjustments and long-term reassurance once the project is complete.
WHY WE CARE – ENVIRONMENTAL APPROACH
Working with thermal insulation, we are all too aware of how much energy we waste. That’s why we are committed to decreasing our own environmental impact. By ensuring that all of our communications are digital, we have cut down on 90% of our paper usage and endeavour to reduce all emissions as best we can.
When sourcing new suppliers, we also seek out businesses that are also doing their part. Whether it’s getting rid of paper, planting a tree for every order or donating to forest conservation, we want to ensure that our products are ethically sourced and of the highest quality.
PROUDLY SUPPORTING:
Trees for Life is a conservation charity dedicated to rewilding the Scottish Highlands. They currently have 44 tree planting sites and have planted nearly two million trees to date.
AWARD-WINNING PRODUCTS AND SERVICE
We pride ourselves on the quality of our products and our service, which is why we are pleased to announce The Soundproof Windows as the winner of two awards at the prestigious SME News Awards.
Leading Providers of Acoustic Windows & Doors 2020, Best Acoustic Window & Door Installation Service 2021 & Best Acoustic Window & Door Installation Company – London 2022
Awarded as part of the Greater London and UK Enterprise Awards, these awards are in recognition of our unique contribution, commitment, excellence and dedication. The two awards also draw attention to our two-pronged approach, proof that we offer the highest quality acoustic windows and doors, and a comprehensive acoustic installation service to match.
All award-winners had to demonstrate expertise in their field, dedication to client service and satisfaction, and a strong commitment to excellence and quality. In recognition of our perseverance and dedication, The SME News Greater London and Uk Enterprise Awards celebrate the most innovative companies, and their most significant successes – and so, The Soundproof Windows is delighted to have been announced as the winner of both categories.
BEAUTIFUL & BESPOKE
By manufacturing bespoke units with the finest quality hard and softwoods, all of our soundproof windows and doors come with up to 10 years’ guarantee. Safeguarded against swelling, warping and fungal attack, they’re built just for you.
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