London's trusted window installation service โ call us for a free site survey.
We specialise in the repair, restoration, and replacement of traditional timber sash windows across Wood green. Our master joiners blend traditional craftsmanship with modern techniques to preserve your home's character and improve thermal efficiency.
No obligation ยท Free site survey ยท Reply within hours
Golden Ratio Windows provides expert Sash Window Repair across Wood Green and the surrounding London Boroughs.
Restore the beauty, functionality, and value of your Wood Green property. We understand the diverse architectural character of Wood Green, from its Victorian and Edwardian terraces to its more modern developments.

Our skilled craftsmen are experienced in addressing issues ranging from simple draught-proofing and essential security upgrades to more complex timber repairs and sash cord replacements.
The properties in Wood Green and Noel Park are part of a rich architectural history. Many original sash windows in this area have suffered from over-painting, which causes sashes to seize up. Our repair service includes paint removal, pulley lubrication, and cord replacement, ensuring that your original windows operate as they were intended over a century ago.
Our team provides essential sash window repairs in London. From Wood Green to Tottenham, we fix draughts and broken cords to keep your heritage windows functional.
We have helped hundreds of London homeowners upgrade their inefficient single-glazed windows.
Finsbury Park
"Saved our original Victorian windows when others said replace. Beautiful workmanship โ our sash windows look brand new."
Stoke Newington
"Draughts completely gone. Warm house for the first time in years. Fair price and they clearly know period properties inside out."
Central London
"They completely replaced two windows in our Edwardian home. Friendly, communicative and done quickly โ in just 2 days."
North London
"The detailing is very well done and accentuates the property nicely. The whole front of the house looks much better as a result."
Yes. We regularly carry out sash window repair and restoration services in Wood green and all surrounding boroughs. We offer free site surveys for all local residents.
Yes, absolutely. We specialise in retrofitting slimline double-glazed units into original timber sash windows. This means you don't have to rip out the entire window box, saving money and preserving the historical character of your property.
Costs vary depending on the extent of the damage (e.g., rotten sills vs simple broken cords). However, repairing is almost always significantly cheaper than a full replacement. We provide completely transparent, itemised quotes after a free survey.
Stop the draughts and start saving on energy bills. We offer a free, no-obligation survey and quote for all window upgrades across London.
218 Hornsey Road, London, N7 7LL
Fill in the form and we'll get back to you within one business day.