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We specialise in the repair, restoration, and replacement of traditional timber sash windows across Kentish Town. Our master joiners blend traditional craftsmanship with modern techniques to preserve your home's character and improve thermal efficiency.
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Golden Ratio Windows provides expert Sash Window Restorations for period homes throughout Kentish Town (NW5).
A full restoration is the best of both worlds for a Kentish Town period home — you keep the original, irreplaceable timber and glass that give NW5's terraces their soul, while gaining windows that open smoothly, seal tightly and look freshly made. It is the option most conservation-conscious owners choose.
Restoration goes well beyond a quick repair. We take each window back to sound condition and rebuild its performance from the ground up:
We strip back old paint, cut out any decayed timber and splice in matching seasoned wood, retaining as much of the original window as possible.
New sash cords, serviced pulleys and correctly balanced weights mean both sashes glide and stay exactly where you leave them.
Discreet brush seals stop draughts and rattles, and we re-putty or carefully re-glaze, keeping original crown glass wherever we can.
A full repaint in a durable microporous finish protects the timber and leaves the windows looking immaculate for years.
With large parts of Kentish Town under Camden conservation area protection, including the Fortess Conservation Area, retaining and restoring original windows is exactly the right approach — it preserves your home's authenticity and avoids planning complications. Where you want extra warmth, restoration pairs perfectly with draught-proofing or a slimline double-glazing retrofit.
If a window proves beyond restoration we can build a matching replacement, and for smaller faults a simple repair may be all you need. We also restore windows in nearby Camden Town.
Book a free, no-obligation site survey with our FENSA-registered joiners. We will assess your windows, explain your options honestly, and give you a transparent written quote. Call 020 3488 1695 or request a callback today.
We also provide expert sash window restoration across these neighbouring London areas:
A selection of recent sash window repairs, restorations and installations completed for homeowners across Kentish Town and North London.
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."
Queens Park
"The window is perfect. I couldn't be happier."
Yes. We regularly carry out sash window repair and restoration services in Kentish Town 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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