Secondary Glazing Solutions for London Homes
Every project starts with four questions: how the window opens, what kind of building it sits in, what noise you are trying to stop, and which rooms matter most. The pages below are organised around exactly that. Our specialist systems can reduce external noise by up to 54dB in suitable configurations — actual performance depends on the existing window, glass specification, air-gap depth, installation quality, room construction and noise frequency.
1. Opening style
How the secondary panel opens decides day-to-day usability, ventilation and the acoustic ceiling you can reach. Fixed and hinged panels seal hardest; vertical sliders suit sash windows you use daily.
Sliding secondary glazing
Vertical and horizontal sliders for sash and casement openings
Hinged secondary glazing
Full window access with continuous compression sealing
Lift-out secondary glazing
Most discreet option for rarely-opened windows
2. Property type
Georgian sash boxes, Victorian terraces and conservation-area flats each need a different fixing and frame approach. These pages cover reveal conditions, reversibility and consent.
Secondary glazing for sash windows
Timber sash boxes, cords and weights left untouched
Listed building secondary glazing
Reversible, consent-friendly specifications
Conservation area secondary glazing
Sightline-matched frames for controlled streetscapes
Victorian terrace secondary glazing
Bay fronts, deep reveals and single-glazed originals
Bay window secondary glazing
Angled and curved bays surveyed panel by panel
French door secondary glazing
Full-height panels that keep the doors usable
3. Noise type
Traffic, rail and aircraft noise sit at different frequencies, so the glass thickness and air gap that solve one are not automatically right for another.
Traffic noise reduction
Low-frequency rumble from arterial roads and bus routes
Railway and Tube noise reduction
Impulsive rail noise and structure-borne vibration
Aircraft noise reduction
Heathrow and City Airport approach paths
Nightlife and street noise
Voices, music and late-night activity
4. Room type
You rarely need the same specification everywhere. Prioritising the rooms where quiet matters most is usually the best value route.
Bedroom noise reduction
Sleep-critical rooms and night-time noise limits
Nursery noise reduction
Daytime nap protection and ventilation
Home office noise reduction
Call clarity and concentration
5. Benefits
Beyond noise, a sealed secondary system changes the thermal and moisture behaviour of an old window.
Thermal insulation benefits
U-value improvement and draught elimination
Condensation and mould control
Managing surface temperature and moisture
Services that deliver these solutions
Survey, specification and installation across London, including heritage projects where conservation officer consent is part of the process.
Residential secondary glazing
Houses, flats and period homes across London
Commercial projects
Offices, hotels and mixed-use buildings
Heritage and listed buildings
Consent-led heritage installations
Acoustic glazing London
10.8mm laminate and specialist glass build-ups
Sound survey
On-site measurement before specification
Thermal insulation service
Heat-loss and draught-focused installations
Where we work
We install across London, with detailed local guides for the boroughs where period property and traffic noise overlap most.