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Welcome to our website. Please read about what we do and don't be afraid to get in touch if you'd like to book.

@info@goldenratiojoinery.com | checkatrade

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Call on: 02034881695 Or try: 07507391329

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Restoring the Heritage of London’s Traditional Sash Windows

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Golden Ratio Windows have been providing the people of London with a wide range of customer focused sash windows and doors services for many years!

Specialists in Sash Window Restoration, Replacement & Repair

Golden Ratio Windows has been serving the residents of London for many years, providing a comprehensive range of customer-focused window and door services. We are well-established as a premium and affordable sash window and door company in London, known for our high-quality bespoke manufacturing and installation.

However, our expertise extends beyond just sash windows. Our skilled team offers a full spectrum of window installation services in London, catering to various styles and materials, including efficient double glazing window installations and tailored solutions for replacing old windows in London homes.

At Golden Ratio Windows, we take immense pride in our meticulous and professional workmanship. Our fully qualified window fitters are dedicated to exceeding client expectations, meeting deadlines, and operating to the highest industry standards. Our long-standing reputation as a reliable window company in London is built on our commitment to quality and customer satisfaction.

So, whether you require specialist sash window restoration in London or are looking for dependable window installers for new builds in London, Golden Ratio Windows offers the expertise and service you can trust.

Areas We Cover

Technical Specifications & Materials

  • Window Components: Box frames, sashes, glazing bars (astragal bars), meeting rails, sash cords and weights, spiral balances, staff beads, and parting beads.
  • Performance & Tech: Slimline double glazing (vacuum glass), draught-proofing systems, acoustic glass (noise reduction), U-values, Low-E coatings.
  • Materials: Accoya® wood (long-lasting timber), hardwood, traditional pulleys, brass or chrome furniture, fitch fasteners.
  • Regulatory Terms: Conservation Area compliance, Article 4 Directions, Grade II listed property requirements, FENSA certification.
Sash Window fitters London
A highly qualified team of sash windows and doors specialists in London

Our philosophy

Our mission is to provide the residents of London with a no hassle window and door installation service where all work exceeds expectations, meets deadlines and offers excellent value for money. We offer a friendly and reliable sash window and door installation service to the residents of London and surrounding areas and have been doing so for many years.

sash windows and doors specialists

Sash Window Installers in London

Why choose us?

We know that choosing the right company to complete work on your property can be difficult and time-consuming. Below we have highlighted some reasons to choose us for your next project.

  • Great Rates & Quotes

    Here at Golden Ratio Windows we strive to give all of our customers the best installation quotes we can, and constantly research our competitors so that we can keep doing so, time and time again. Are you looking for a sash windows and doors quote? Look no further!

  • A Name You Can Rely On

    We strive to be a window installation company that you can rely on. That’s why we arrive on time each day, and are well equipped for the job at hand. Doing so means that we can always stick to a predetermined time scale, and the initial quotation that we have provided.

  • A Time Served Team

    We are time served window and door installation company and have many years experience working within trade. Throughout our many years operating in London we have built up a wealth of experience along with a long list of satisfied customers.

  • Quality through and through

    Our work is of the highest quality due to our attention to detail and the fact we only use the highest qualtiy materials. We hand pick using only the most reliable and reputable suppliers. The time and care in which we put into picking our materials may seem unimportant, but these small touches result in a far superior finish that can stand the test of time.

  • Highly recommended

    Most of our work is gained through word-of-mouth recommendations, which goes to prove just how much care we put into our work. Many of our previous clients return to us for other work.

Here at Golden Ratio Windows we have built up an excellent reputation in our local area by offering the most comprehensive and expert service in London. From the planning stage to the finished article; we are with you every step of the way, making sure that whatever the task, you are completely satisfied with the end result. You can also rest assured that you will be receiving a professional, yet personal service for each job that we attend.

See our services

With so many years working in the trade, we are happy to answer any queries and provide quotes for any work that you are looking to have done. If you are in need of any work in London or the surrounding areas, then give us a call on 02034881695, or send us a message through our contact page.

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