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Soundproof Window Specialists London | Acoustic Secondary Glazing

Reclaim Your Peace.

London's leading soundproof secondary glazing specialists. Our 10.8mm acoustic laminate glass delivers up to 54dB noise reduction — the highest available for residential properties. Heritage and listed building window specialists serving Belgravia, Chelsea, Richmond, Hampstead, Notting Hill, Mayfair, and all London boroughs. Free noise survey. Prices from £350 per window. No planning permission required.

We are London's trusted listed building secondary glazing installers. Whether you face traffic noise from the A316, Heathrow flight path disturbance, or nightlife noise in Portobello Road, our bespoke acoustic solutions — fully compliant with conservation area requirements — transform your home into a sanctuary of silence. Westminster enforcement alone won't fix your noise problem. Properly specified secondary glazing will.

Start Your Silent Journey →

    Heritage & Sash Window Soundproofing Calculator

    Get an instant rough estimate for acoustic secondary glazing — designed for Grade I, Grade II listed buildings and conservation areas.

    Heritage & Sash Window Calculator

    Get an instant rough estimate for acoustic secondary glazing — designed for listed buildings and period homes.

    Get a Guaranteed QuoteFull Acoustic Calculator

    Estimates are indicative. Final pricing depends on site survey, access, and frame condition.

    Why Secondary Glazing for Heritage Homes?

    Planning-Friendly

    Fully reversible internal addition — generally exempt from Listed Building Consent.

    Original Windows Preserved

    Your timber sashes stay untouched. 20mm slimline frames colour-matched to heritage palettes.

    Up to 50dB Reduction

    10.8mm acoustic laminate glass with 150mm air gap delivers recording-studio silence.

    Ready for a Guaranteed Quote?

    Our free noise survey will give you exact pricing for your property. No obligation, no pressure.

    Book Free Noise Survey