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 Stoke newington. 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 Restoration across Stoke Newington and the surrounding London Boroughs.
See our craftsmanship in action: Victorian Sash Window Restoration Case Study in Stoke Newington.
We offer high-quality sash window refurbishment designed to extend the life of existing timber windows and maintain the historical integrity of your property.

Our specialized services breathe new life into original windows, enhancing their beauty and thermal performance without stripping away the unique patina of the original timber.
Our team is dedicated to the heritage restoration of sash windows in London. From Stoke Newington to Highbury, we preserve the original charm of your period property.
Read about a recent sash window restoration project we completed in Stoke Newington.
View Case StudyWe 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 Stoke newington 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
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