London's #1 Acoustic Glazing Specialists
Secondary Glazing LondonFrom £350 Per Window, Installed
How much does secondary glazing cost in London? From £350 per window for standard glass to £900 for premium 10.8mm acoustic laminate — installed across all 32 boroughs without touching your original windows. Reduce traffic, rail, and flight noise by up to 80%.
3,200+
London installations
45–50dB
Average noise reduction
4.9/5
Customer rating
Same day
Survey booking
Why London Homeowners Choose Secondary Glazing
From Heathrow flight paths to Hackney bus routes, London's noise is relentless. Secondary glazing is the only solution that delivers extreme noise reduction without altering your period windows.
Up to 80% Noise Reduction
10.8mm Stadip Silence acoustic laminate paired with a 100–200mm air gap cuts traffic, rail, and flight noise by 45–50dB.
Heritage & Listed Building Safe
Internal fitting means no planning permission needed — fully reversible and conservation-officer approved across all 32 boroughs.
Slash Energy Bills
Secondary glazing reduces heat loss through windows by up to 65%, saving London homeowners an average of £380/year on heating.
Increase Property Value
Quiet homes in noisy postcodes command a 1–3% premium. In Kensington, that can mean £30,000+ on a typical property.
Our London Installation Process
Free Noise Survey
We visit your London property, measure decibel levels room-by-room, and identify the weakest acoustic points.
Bespoke Design
Every frame is CNC-cut to the millimetre — essential for heritage windows that have settled over 150+ years.
Precision Install
Most London homes are completed in a single day. No scaffolding, no mess, no disruption to your neighbours.
Acoustic Verification
Post-install measurement confirms the dB reduction. You'll notice the difference the very first night.
Areas We Serve Across London
We cover every London borough — here are some of our busiest areas and the noise challenges we solve there.
Hover over pins to see borough names • We serve all 32 London boroughs
Kensington & Chelsea
King's Road nightlife, A4 traffic
Westminster — Belgravia
Victoria Coach Station, Buckingham Palace Road traffic
Westminster — Mayfair
Heathrow flight path, Park Lane traffic
Camden — Hampstead
High Street buzz, overground rail
Islington & Canonbury
Upper Street, bus routes
Hackney & East London
Dalston nightlife, A10 corridor
Lambeth & Southwark
Brixton Road, rail lines
Wandsworth — Clapham & Battersea
A3 traffic, Clapham Junction trains
Wandsworth — Putney
A3 corridor, Roehampton traffic
Richmond & Twickenham
Heathrow approaches, A316
Greenwich & Blackheath
A2 traffic, rail lines
Ealing & Hanwell
Uxbridge Road, Crossrail
Merton — Wimbledon
A219 traffic, District line
Hounslow — Chiswick
A4 Great West Road, flight path
Westminster — Marylebone
Marylebone Road, Euston traffic
Camden — Highgate & Crouch End
Archway Road, Parkland Walk corridor
What London Homeowners Say
Real results from real London properties — verified installations with measured noise reductions.
"We're on the A4 — 50,000 vehicles a day. After the 10.8mm secondary glazing went in, our bedroom is quieter than our friend's house in the Cotswolds. Genuinely life-changing."
Sarah T.
Kensington, W8 • Grade II listed Victorian terrace
A4 traffic + Heathrow flight path
"Dalston nightlife used to wake us every Friday and Saturday. Now we sleep through it completely. The installation took one day and the frames are practically invisible."
David & Emma R.
Hackney, E8 • Converted Victorian warehouse
Nightlife, Kingsland Road bus route
"Our flat overlooked Marylebone Road — 78dB at peak. Post-installation measurement was 31dB inside. The surveyor couldn't believe the difference. Worth every penny."
James P.
Marylebone, W1 • Edwardian mansion flat
Marylebone Road traffic
"Under the Heathrow flight path, a plane every 90 seconds. The low-frequency rumble is completely gone. I can finally use the garden room as my home office."
Catherine L.
Richmond, TW9 • Georgian townhouse
Heathrow aircraft approaches
"Clapham Junction is the busiest railway station in Europe and we live 200 metres from it. The secondary glazing reduced the train noise to a gentle background hum. Our house valuation went up £45,000."
Mark & Lisa H.
Clapham, SW4 • Victorian terrace
Clapham Junction rail traffic
"As a GP working night shifts, daytime sleep is essential. The 10.8mm glass with the 150mm air gap turned my bedroom into a sanctuary. I should have done this years ago."
Dr. Anita S.
Hampstead, NW3 • Grade II listed cottage
Heath traffic, construction
Frequently Asked Questions
How much does secondary glazing cost in London?
Prices start from around £350 per window for standard 6.4mm laminate and £500–£900 per window for premium 10.8mm acoustic glass. A typical 3-bedroom Victorian terrace costs £3,500–£6,500 fully installed. Use our cost estimator for an instant ballpark figure.
Do I need planning permission for secondary glazing in London?
Almost never. Secondary glazing is an internal addition that doesn't alter your building's external appearance. It's the preferred solution for Grade II listed buildings and conservation areas across Westminster, Camden, Kensington & Chelsea, and all London boroughs.
How long does installation take?
Most London properties are completed in a single day. A standard 3-bed terrace with 8–10 windows typically takes 6–8 hours. There's no external scaffolding, no planning delays, and no need to redecorate afterwards.
Is secondary glazing better than double glazing for noise?
Yes — significantly. Double glazing achieves around 25–30dB reduction. Secondary glazing with 10.8mm acoustic laminate and a 100mm+ air gap achieves 45–50dB reduction. That's the difference between hearing every bus and hearing almost nothing.
Which London areas do you cover?
We serve all 32 London boroughs plus surrounding areas. Our busiest areas include Kensington, Chelsea, Mayfair, Belgravia, Hampstead, Islington, Hackney, Clapham, Dulwich, Richmond, and Wimbledon.
Can secondary glazing help with Heathrow flight noise?
Absolutely. Properties under the Heathrow flight path in Richmond, Hounslow, Ealing, and West London are among our most common installations. The 10.8mm acoustic laminate is specifically engineered to dampen the low-frequency rumble of aircraft.
Ready to Silence Your London Home?
Book a free noise survey — we'll measure every room and recommend the most cost-effective solution for your property.