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Kitchen sink with a view

About London Sash Windows & Doors

London’s leading installers of sliding sash windows, noise-reducing windows and heritage slim double glazing

Family run, experienced and committed to excellence

We are a traditional, family-run business with 20 years of direct manufacturing and installation experience. As such, we now have a wealth of knowledge and expertise that makes us a highly recommended supplier of windows, doors and glazing in London.


Our focus is on producing windows of the absolute highest quality, with a level of customer service that is incomparable in its professionalism, integrity and friendly approach.


We offer a bespoke service to each of our clients, whether that be a simple overhaul and draught proofing service, new bespoke noise-reducing sashes, heritage double glazing or a complete replacement package.


Our sash windows and doors are manufactured in North London.

chair in front of French doors

A service that puts our customers first

As a family-run business, we are a company that our clients can rely on. We promise an honest, friendly work ethic that provides value for money whilst adhering to the highest quality standards.


Our clients are kept on an exclusive level and can expect to be 100% satisfied. All of our customers can benefit from a 10-year warranty on all products and services.

Decorative flourish

Our Painting workshop

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Painting Workshop
Decorative flourish

Our Joinery workshop

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Joinery Workshop

All installation work comes with:

sash window overlooking buildings
  • 10-year guarantee (T&Cs apply)

  • FENSA certificate for complete replacements (T&Cs apply)

  • Insurance backed guarantee for FENSA registered projects

  • Price match guarantee

We continue to be proud of our reputation and we kindly request that our clients leave an honest review upon completion of works.