Reduce Outside Noise with Acoustic Double Glazed Windows & Secondary Glazing
Living near a busy road, railway line, or noisy neighbourhood can make it difficult to relax, sleep, or work from home. At Colin’s Sash Windows, we help homeowners reduce unwanted noise using high-quality double glazed windows and secondary glazing solutions designed to improve acoustic insulation without compromising the character of the property.
While no window can make a home completely silent, the right glazing configuration and professional installation can significantly reduce external noise and improve everyday comfort.
What Are Sound Proof Windows?
At Colin’s Sash Windows, soundproof windows refer to windows that are designed to reduce noise transmission into your home.
Rather than being a separate product line, soundproofing is achieved through:
These elements work together to reduce airborne noise such as traffic, trains, and neighbour disturbance.
How Our Windows Reduce Noise?
Noise enters a property through vibration and air gaps. Our approach focuses on controlling both. Here are some of the points to note down:
Acoustic glazing
Laminated glass includes a specialist interlayer that dampens sound vibrations as they pass through the glass.
Asymmetrical pane thickness
Using panes of different thickness helps disrupt sound waves across a wider range of frequencies than standard glazing.
Increased air cavities
Both double glazing and secondary glazing rely on air gaps to interrupt the sound path; larger, sealed cavities generally improve noise reduction.
Airtight fitting
Even small gaps around the frame can allow sound to leak through. Our installations focus on tight tolerances and effective perimeter sealing to maximise performance.
Sound Proofing Solutions for UK Homes
Reducing noise pollution is a growing concern for UK homeowners, especially in urban areas, near main roads, rail lines, or flight paths. Our sound proofing window solutions are designed to minimise airborne noise while complying with UK building standards and preserving the character of your property. Each option addresses different levels of noise exposure, architectural requirements, and planning constraints.
Double Glazed Sash Windows for Noise Control
Our double glazed sash windows are a practical upgrade for traditional UK properties that require improved acoustic insulation without compromising heritage style. By using sealed double glazed units, sound waves are slowed and dispersed before entering the interior space.
This solution works particularly well for Victorian and Edwardian homes where external noise is moderate but persistent. Combined with modern draught proofing and precision balancing, double glazed sash windows reduce common sound entry points found in older timber frames, while also improving overall energy efficiency.
- Period homes with original sash window layouts
- Residential streets with consistent background noise
- Homeowners seeking a balance between aesthetics and performance
Double Glazed Casement Windows for Urban Noise Reduction
Our range of double glazed casement windows offers a more contemporary approach to sound insulation. Their outward opening design allows the sash to press firmly against the frame when closed, creating an effective acoustic seal that limits sound penetration.
This type of window is particularly effective in suburban and urban settings where noise levels fluctuate throughout the day. When fitted with modern double glazing, casement windows help reduce traffic noise, voices, and environmental sounds while meeting current UK thermal performance expectations.
Best suited for:
- Modern homes and extensions
- Properties near roads, schools, or commercial areas
- Homeowners prioritising strong seals and easy maintenance
Secondary Glazing for Maximum Noise Reduction
Secondary glazing is widely regarded as one of the most effective acoustic solutions available for UK properties affected by high noise levels. Rather than replacing the existing window, a discreet internal glazing system is installed on the room side, creating a much larger air cavity than standard double glazing.
This wider gap dramatically improves sound insulation, making secondary glazing highly effective against low frequency noise such as traffic, trains, and aircraft. It is commonly recommended for listed buildings and homes within conservation areas, where original windows must be retained to meet planning and heritage requirements.
Best suited for:
- Listed buildings and conservation areas
- Properties exposed to heavy or constant noise
- Homeowners seeking maximum sound reduction without altering the exterior
How Much Noise Reduction Can You Expect?
Noise reduction in windows is measured in decibels (dB), and depending on the glazing solution and noise type, most homeowners enjoy a significant drop of 20–30 dB, often transforming daily life by making busy roads, voices, or trains far less intrusive.
The level of improvement varies based on the noise source (such as traffic or rail), your window sizes and construction, whether secondary glazing is added, and the quality of installation.
During your free home survey, we carefully evaluate these factors and recommend the best options to deliver the maximum noise reduction for your specific situation.
Common Problems Sound Proof Windows Help With
Our sound-reducing window solutions are commonly installed to address:
- Road and traffic noise
- Train or tram lines
- Aircraft flight paths
- Noise transfer between neighbouring properties
- General urban noise pollution
Our sound-reducing window solutions are commonly installed to address:
- Bedrooms
- Living rooms
- Home offices
- Nurseries
Sound Proof Windows vs Standard Double Glazing
Standard double glazing is mainly designed for thermal efficiency and does offer some noise reduction as a by-product, but it’s not optimised for sound insulation.
For significantly better noise control, our sound-reducing sash & casement windows or secondary glazing solutions use specialist acoustic glass configurations, prioritise airtight seals, and are specifically engineered to block external noise.
If your home suffers from ongoing traffic, rail, or street sounds, choosing an acoustics-focused upgrade will deliver a far more noticeable and peaceful improvement.
Our Installation Process
Our every sound reduction project follows a clear, professional process:
1.
Initial consultation
Discuss the noise issue and affected rooms.
2.
On-site survey
Measure openings and assess noise sources
3.
Solution
Double glazing or secondary glazing
5.
Professional installation
Careful fitting and sealing
6.
Final checks & aftercare
Ensuring performance and finish
All installations are carried out to meet UK building standards and are backed by our guarantees.
Sound Proof Windows Cost
The cost of enhancing sound insulation varies depending on several factors: the size and number of windows, the glazing type (such as double or specialist acoustic laminates), whether you opt for secondary glazing or full replacement, and any specific property access or installation needs.
Tip: Secondary glazing is frequently the most affordable way to achieve significant noise reduction,
especially for preserving existing sash windows.
After your home survey, we’ll provide a detailed, itemised quotation with no obligation, completely transparent and tailored to your requirements.
Suitable for Period & Listed Properties
Many of our sound-reduction solutions are ideal for heritage homes. Secondary glazing is commonly used in listed buildings and conservation areas because it:
- Preserves original windows
- Does not alter the external appearance
- Provides excellent noise and thermal improvement
We’re happy to advise on suitable options where planning considerations apply.
To Get Value For Money
Choose Colin's Sash Windows
10 Years Gaurantee
All our double glazed windows comes with the 10 years on parts and labour.
Made in Britain
We supply only made in Britain double glazed windows that are manufactured in UK.
We Match Your Price
If you have got a cheaper price from any other supplier then we are ready to match the price.
Book a Free Noise Assessment Me. I would like to chat about this with you
If external noise is affecting your comfort, sleep, or productivity, the first step is a professional assessment. Contact Colin’s Sash Windows today to arrange a free survey and receive expert advice on the best sound-reduction solution for your home.
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