How much does secondary glazing cost in London?

Secondary glazing in London typically costs between £300-£600 per window for professional installation. Factors affecting price include window size, glazing type, and frame material. We offer free surveys and quotes.

Does secondary glazing reduce noise effectively?

Yes, secondary glazing can reduce noise by up to 80% (45dB). It's particularly effective for traffic noise, aircraft noise, and busy urban environments. The air gap between windows is key to acoustic performance.

Can secondary glazing be installed in listed buildings?

Yes, secondary glazing is often the preferred solution for listed buildings as it preserves original windows. It typically doesn't require planning permission as it's a reversible internal alteration.

How long does secondary glazing installation take?

Professional installation typically takes 30-60 minutes per window. Most homes can be fully fitted within a single day with minimal disruption to your daily routine.

London heritage specialists

Secondary glazing installers across London

A quieter, warmer way to improve period windows without replacing the character that makes your home yours. We survey, specify and install acoustic, thermal and heritage secondary glazing across London.

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25+ years heritage experience10-year guaranteeSingle-day installation where suitable

Acoustic secondary glazing installed in a London period property

Made for London homes

Sash windows, bay windows, listed buildings and conservation areas.

One specialist team

The right specification for the right room

Noise, heat loss, condensation and heritage constraints are connected. We start with the window and the building, not a one-size-fits-all product.

Acoustic secondary glazing

Reduce outside noise through sash, bay and casement windows with a specification designed around the room and the noise source.

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Thermal secondary glazing

Improve comfort and reduce heat loss while keeping original windows, reveals and period character in place.

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Listed-building glazing

A reversible internal approach for listed homes and conservation areas, with consent guidance before work starts.

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Areas we serve

From Kensington to Hampstead and beyond

We work across Greater London, including Westminster, Kensington & Chelsea, Chelsea, Belgravia, Hampstead, Richmond, Camden, Mayfair and surrounding areas.

Sash and Victorian windows

Bay and Georgian windows

Conservation-area homes

Listed and period properties

Browse London areas Read the refurbishment guide

Start with a proper survey

Good glazing starts with good questions.

Tell us about the property, the windows and the problem you want to solve. We will recommend the most appropriate route, including whether refurbishment, replacement or secondary glazing makes sense.

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