London's specialist installer of acoustic secondary glazing — 10.8mm acoustic laminate glass cutting traffic, rail and aircraft noise by up to 54dB. Listed-building approved across Kensington, Chelsea & Westminster.
Get Your Peace BackWe are London's dedicated acoustic secondary glazing specialists, focused exclusively on protecting heritage homes from the city's relentless noise. Unlike general glaziers who treat secondary glazing for sash windows as a sideline, our entire craft is built around one mission: delivering measurable, laboratory-verified silence to period properties, listed buildings, and conservation area homes across the capital. Homeowners comparing options can start with our residential secondary glazing for London sash windows or request a measured specification through our free London secondary glazing survey.
Heritage windows are irreplaceable. Original Georgian, Victorian, and Edwardian sash windows define the character of London streetscapes — and replacing them is rarely permitted, often undesirable, and never reversible. Our acoustic secondary glazing sits discreetly behind the existing window, preserving every original feature while transforming the acoustic performance of the room. It follows the reversible conservation approach described by Historic England's secondary glazing guidance and is routinely approved by local conservation officers for soundproof windows in listed buildings and conservation areas.
At the core of every installation is our 10.8mm acoustic laminate glass, engineered with an acoustic-grade PVB interlayer that dampens sound waves across the full frequency spectrum — from low-frequency bus rumble to high-frequency sirens and aircraft. Paired with our precision 100–150mm air gap, this configuration delivers up to 54dB of noise reduction, outperforming even high-end replacement double glazing. This is the gap that matters most: the wider the cavity, the better the acoustic decoupling, and we tune it to each window for peak performance. The technical detail is explained in our 10.8mm acoustic laminate glass specifications for secondary glazing and our secondary glazing noise reduction science guide.
Every installation is backed by a 25-year warranty covering materials, frames, and workmanship — a confidence underwritten by a 100% conservation officer approval rate across every listed building application we have submitted. When clients compare secondary glazing vs double glazing for noise, the verdict is consistent: properly specified acoustic secondary glazing is quieter, cheaper, and heritage-safe. For budgeting, see our secondary glazing noise reduction cost guide for London homes before booking a survey.
We serve London's most acoustically demanding postcodes, with deep experience in Kensington, Chelsea, and Westminster — boroughs where stucco terraces, mansion blocks, and Grade II listed townhouses sit beside the city's busiest arteries. Whether you need soundproofing sash windows in London on a Royal Borough mansion, an Eaton Square portico, or a Westminster Listed Building Consent project, our acoustic glazing specialists survey, design, and install in-house with no subcontractors and no compromises. Explore local guidance for secondary glazing in Kensington conservation areas, acoustic secondary glazing for Chelsea sash windows, and listed building secondary glazing in Westminster.
Engineering Acoustic Perfection
Why 10.8mm Acoustic Laminate Changes Everything
10.8mm Acoustic Laminate Glass
Our 10.8mm acoustic laminate glass is engineered from two sheets of glass bonded to a specialised PVB acoustic interlayer. This triple-layer construction dramatically increases mass per square metre — the single most important factor in blocking low-frequency rumble.
100–150mm Decoupled Air Cavity
Our installations maintain a 100mm to 150mm gap between the original window and the secondary pane — validated by acoustic engineers as the "sweet spot" for residential sound insulation.
Twin-Compression Acoustic Seals
Every secondary glazing panel features dual-durometer EPDM rubber gaskets that compress against the frame on both sides, creating an airtight perimeter with no flanking paths for noise.
Living in London's most prestigious areas shouldn't mean sacrificing peace and quiet. Traffic noise, construction, and urban activity can make homes uncomfortable and reduce property value. Traditional solutions like double glazing often aren't possible in listed buildings or conservation areas.
That's where soundproof secondary glazing excels—providing up to 54dB noise reduction with our 10.8mm acoustic glass, without altering your original windows. Our specialist secondary glazing noise reduction solutions are approved for heritage properties and deliver immediate acoustic improvements. Whether you're in a Georgian townhouse in Kensington or a Victorian terrace in Richmond, we help restore peace to your home.
Unlike general glazing companies that offer soundproofing as an afterthought, we do nothing but acoustic secondary glazing—every day, in every London borough. Our 10.8mm laminated acoustic glass and precision-engineered air gaps achieve independently verified 54dB reduction, outperforming double glazing by over 20dB.
From Kensington's Cromwell Road to Richmond's Heathrow flight path, we've completed over 200 heritage installations with a 100% conservation officer approval rate. Every project includes a free professional acoustic survey, bespoke design, and our comprehensive 25-year warranty.
54dB verified noise reduction
Grade I, II* & II listed approved
25+ years London-only specialists
100% conservation consent rate
25-year warranty on every install
Not all glazing is equal. Compare decibel reduction across solution types to see why 10.8mm acoustic glass is the professional's choice.
| Solution Type | Typical dB Reduction | Frequency Analysis | Best For |
|---|---|---|---|
| Standard Double Glazing | 28–32 dB | Mid only | Thermal insulation only |
| 6.4mm Laminate Glass | 35–38 dB | Mid–High | Light traffic & general ambient noise |
| 10.8mm Acoustic Specialist Glass Premium Choice | 45–54 dB | Low–Mid–High | Heavy sirens, trains & city noise |
dB figures based on independent laboratory testing. Actual performance varies by installation, air-gap depth, and window condition.
We offer comprehensive secondary glazing solutions tailored to your specific needs. Each service is delivered by our experienced team with minimal disruption to your property.
Transform your home with acoustic and thermal performance improvements.
Enhance productivity in offices, hotels, and educational facilities.
Conservation-compliant solutions that preserve original features.
Expert servicing to keep your systems performing optimally.
Professional noise assessments and performance planning.
Achieve up to 30% energy savings alongside noise reduction.
Authoritative sources supporting the information in this article.
This is the primary British Standard for sound insulation in buildings, providing the methodology for measuring and achieving target decibel reductions.
Statutory guidance on ventilation and air quality that must be balanced with acoustic sealing when installing secondary glazing in London properties.
The essential guide for London homeowners in conservation areas or heritage buildings regarding the installation of secondary glazing to meet acoustic needs without altering original windows.
Technical evidence supporting the capability of specialized acoustic glass (like Stadip Silence) to achieve high sound reduction levels like 54dB when used in specific window configurations.
A key research paper detailing how secondary glazing with a significant air cavity (up to 200mm) is the most effective method for reducing low-frequency traffic noise in urban London.
