Looking for secondary glazing in London? S&K Glazing has been installing across Greater London for over a decade. Secondary glazing is the ideal solution where you can't replace the primary window — listed buildings, conservation areas, rental properties, and period homes with original sash windows. For London properties near Heathrow, Gatwick, City, Luton, Stansted, we can specify acoustic-grade glass to reduce aircraft noise alongside thermal performance.
Secondary glazing is the ideal solution where you can't replace the primary window — listed buildings, conservation areas, rental properties, and period homes with original sash windows. We install slim, virtually invisible aluminium-framed secondary units behind your existing windows, delivering noise reduction up to 50 dB and a 60% improvement in thermal efficiency, without altering the building's appearance.
London is our largest single market — 33 boroughs, five international airports, the M25 motorway and railway lines crossing every postcode. Our acoustic glazing dominates demand in flight-path postcodes near Heathrow (TW, UB, SW), Gatwick (RH, KT, CR) and City Airport (E16, E14). Plus commercial shopfront work across every high street and Zone 1-2 retail district.
For acoustic glazing in London, aircraft noise from Heathrow, Gatwick, City, Luton, Stansted shapes the brief — overhead noise here peaks above 85 dB during arrivals. Our acoustic specifications start at Rw 38 dB reduction for standard double-glazed acoustic units and scale to Rw 52 dB for triple-glazed asymmetric builds with laminated PVB interlayers. Most commonly we're working across M25, E16 and E14 postcodes. We can normally survey within a week and return a proposal showing measured baseline noise alongside the projected indoor level after install.
We measure existing reveal depths and assess the primary window's condition. Our surveys are accepted by listed-building officers and planning departments.
Each unit is made to fit your exact reveal — slim aluminium frames in white, brown, black or RAL-matched colours. Glass options include acoustic laminated and Low-E thermal.
Installed entirely from inside the property with no disruption to the original window. Most installations are completed in a single day.
Free survey, fixed-price quotes, no pressure sales. Call us, message on WhatsApp, or fill in the form — we typically respond within an hour during working days.
Local survey, fixed-price quote, no obligation.
