Golden Ratio Joinery Ltd

07/09/2026

Accoya is the timber we build most of our sash windows from.

It starts as sustainably grown softwood and goes through a process called acetylation, which changes the structure of the wood so it no longer readily absorbs moisture.

That one change matters more than it sounds. Timber that doesn't take on water doesn't swell in winter or shrink back in summer — so the sashes keep sliding, the joints stay closed, and paint holds far longer because the surface underneath isn't moving beneath it.

It carries a 50-year above-ground warranty from the manufacturer, and takes a hand-painted finish beautifully.

Bespoke Accoya sash windows, made and fitted across London.

https://goldenratiowindows.co.uk/accoya-windows-london.html

15/07/2026

✨ "The difference the new doors have made is amazing." ✨

We just finished installing these beautiful oak French doors for Ercan at his tailoring shop — and honestly, the transformation speaks for itself. 😍

Swap a solid door for full-height glazing and suddenly the whole space breathes differently. More light, more openness, more of that lovely period charm the shop already had.

Here's what Ercan had to say:

"Really happy with my new French doors from Golden Ratio. I wanted to bring more natural light into our tailoring shop and completely open up the space, and the difference the new doors have made is amazing. From the first conversation through to the installation, the team were professional, helpful and a pleasure to deal with. The quality and finish are perfect, and I'm genuinely so happy with how the doors have turned out."

⭐⭐⭐⭐⭐

Thank you so much, Ercan — it was a pleasure working on this one!

Thinking about French doors, sash windows, or bespoke joinery for your home or business? Drop us a message or give us a call — we'd love to help. 🛠️

https://goldenratiowindows.co.uk/french-doors-london.html

16/06/2026

Two sash windows, one Edwardian home, two days. ✅

Aishwarya reached out needing both windows replaced in her Central London Edwardian property. We fitted bespoke timber sash windows — period-accurate glazing bar detail, smooth operation, and done inside 48 hours.

Her words: "Friendly, communicative and done quickly — in just 2 days."

If you've got tired, draughty, or failed sash windows in a period home, we'd love to help. Read the full case study 👇
https://goldenratiowindows.co.uk/case-study-edwardian-sash-window-replacement-central-london.html

16/06/2026

We get asked this a lot: "What does the golden ratio have to do with windows?"
The short answer: Georgian and Victorian architects used it to proportion everything — including the windows in your home. It's why period houses look the way they do, and it's the standard we've built our work around since day one.
We wrote a proper explanation here 👇

goldenratiowindows.co.uk/blog/why-were-called-golden-ratio

06/06/2026

31/05/2026

Traditional Shutter Sash Windows Refurbishments, Restorations & Repairs in

29/04/2026

At Golden Ratio Sash Windows and Doors, we pride ourselves on a "no-stress" installation process. We don’t just fit windows; we respect your space. Here is exactly how we ensure a smooth experience from start to finish:

✅ Clear Communication: You’ll receive a full schedule of work so you always know which windows are being replaced and when.
✅ Home Protection: We use protective coverings and manage dust and noise to keep your environment clean and professional.
✅ Safety & Security: Your property is never left exposed. We work efficiently—usually one opening at a time—and ensure everything is 100% weatherproof and secure before we leave each day.
✅ The Finishing Touch: From full debris removal to the final quality walk-through, we don’t consider the job done until your space is tidy and you are completely satisfied.
✅ Peace of Mind: Every installation comes with full warranty details for both our products and our workmanship.

Ready for a professional, hassle-free upgrade?

📩 Message us today or visit https://goldenratiowindows.co.uk/ to book a consultation.

26/03/2026

Navigating the 2026 Planning Maze: How to upgrade Sash Windows in London Conservation Areas without losing heritage status. From Article 4 Directions to the 0.7\ U-value of Vacuum Glazing. 🏛️💻

Expert guide to sash windows in London conservation areas. Learn about Article 4 directions, Accoya® timber, and slimline double glazing for heritage homes by Golden Ratio.

26/02/2026

Preserving Victorian Charm in North London 🏛️

There is something truly special about restoring the original character of a Victorian home. We recently completed this project where we reproduced traditional sash windows with intricate joinery, blending classic aesthetics with a modern, robust finish.

As our client Federico mentioned, "The detailing is very well done and accentuates the property nicely." From the solid feel of the timber to the smooth operation of the high-quality window furniture, we take pride in every millimeter.

Thank you, Federico, for trusting us with two of your properties and for recommending us to your family!

https://goldenratiowindows.co.uk/

29/12/2025

⭐ 5-Star Review ⭐

We’re incredibly grateful to Nick for this fantastic feedback.

From first consultation through to final installation, this project was all about listening carefully, offering honest advice, and delivering joinery finished to the highest standard. Attention to detail, clear communication, and pride in craftsmanship are things we never compromise on — so it’s great to see that recognised.

Thank you for trusting Golden Ratio with your project. Reviews like this genuinely mean a lot.

If you’re looking for bespoke joinery, window work, or a beautifully finished door, we’d be happy to help.