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We specialise in the repair, restoration, and replacement of traditional timber sash windows across Mayfair. Our master joiners blend traditional craftsmanship with modern techniques to preserve your home's character and improve thermal efficiency.
No obligation · Free site survey · Reply within hours
Golden Ratio Windows provides specialized Sash Window Restoration across Mayfair and surrounding areas.
Restore the heritage charm and thermal comfort of your period property with our bespoke sash window restoration. We refurbish original sashes, eliminating draughts and timber rot while keeping your authentic glass intact.
Our restoration process involves strip-painting, timber repairs using advanced splice techniques, and the integration of high-performance draft seals. Mayfair's architectural heritage comprises grand Georgian townhouses and prestigious commercial facades. Restoring sash windows here demands exceptional care to detail, ensuring original timber profiles and FENSA compliance are preserved.
We understand the importance of preserving original Georgian and Victorian detailing around Berkeley Square, Bond Street, and Mount Street. Our restoration works in W1K and W1J ensure your historic windows operate smoothly and quietly, significantly reducing street noise and heat loss.
Maintain the original beauty of your home with sash window restoration in London. We cover Mayfair and surrounding locations with master joinery care.
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 — 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 — 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 Mayfair 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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