Timber Window Restoration & Sash Window Repair in South Kensington
Restore My Window provides expert timber window restoration, sash window repair, casement window refurbishment, draught proofing, and bespoke window replacement services throughout South Kensington.
South Kensington is home to some of London’s finest Victorian and Edwardian properties, many of which sit in conservation areas or are Grade II listed. Original timber sash and casement windows are a defining feature of these buildings — and they almost always need specialist care rather than full replacement.
At Restore My Window we specialise in sash window repair South Kensington, wet-rot timber splicing, sash cord replacement, draught-proofing, and sensitive upgrades (including slimline or vacuum double glazing) that meet RBKC planning requirements.
Whether your property is on Thurloe Place, Thurloe Square, Onslow Gardens, Queen’s Gate, Cromwell Road, or any of the surrounding streets, our heritage joiners deliver precise, like-for-like repairs that preserve character while improving performance.
Trusted Timber Window Specialists in South Kensington
We combine traditional joinery techniques with high-quality materials to deliver long-lasting restoration and repair solutions.

Common Sash Window Problems in South Kensington Properties
Grade II Listed & Conservation Area Window Specialists in South Kensington
We regularly work on Grade II listed properties and buildings within the Thurloe Estate and Smith’s Charity Conservation Area under RBKC. We provide:
Dual-Specification Quotations
Option A: Pure like-for-like repair & maintenance
Option B: Upgraded replica with vacuum or heritage slimline double glazing
Traditional Timber Splice Repairs
Expert restoration using period-appropriate timber species and precise historic moulding profiles.
In-Situ Repairs
Carefully executed repairs carried out directly on-site to minimise disruption to your home and daily routine.
Full Documentation & Consent
Comprehensive specifications and statements suitable for submission to planning authorities and listed-building consent.
Our Window Services
Why South Kensington Homeowners Choose Restore My Window
Ready to Restore Your Period Windows?
Contact Restore My Window today to discuss your South Kensington timber window project. Get a free, no-obligation assessment from London’s trusted sash window restoration specialists. Protect your property’s character and value today.
Trusted By Homeowners Across London
J Noel
Chris Snoxall
Marco Gargiulo
Frequently Asked Questions
1. Can you repair sash windows on Grade II listed properties in South Kensington?
Yes. We specialise in Grade II listed and conservation-area window work across South Kensington (including the Thurloe Estate and Smith’s Charity Conservation Area under RBKC). We carry out traditional timber splice repairs, like-for-like restoration, and can provide dual quotations when required for planning or listed-building consent.
2. Do you offer dual quotations for repair versus upgrade options?
Yes. Many clients in South Kensington request two clear options:
- Option A: Pure like-for-like repair and maintenance (retaining original single glazing and secondary glazing where present).
- Option B: Upgraded replica sashes or casements designed for ultra-thin vacuum glass or heritage slimline double glazing, allowing the removal of internal secondary glazing.
We break both options down clearly so you can compare cost, performance and planning implications.
3. What common problems do you fix on sash windows in South Kensington?
The most frequent issues we see are wet rot in the lower rails and meeting rails, broken or painted-over sash cords, windows that have been painted shut, stiff or unbalanced sashes, and single-glazed windows that need better draught-proofing or thermal performance while remaining conservation-compliant.
4. Can original timber sash windows be repaired rather than replaced?
In the vast majority of cases, yes. We prioritise repair and restoration over replacement. Using traditional joinery techniques (including precise timber splicing with period-appropriate timber and moulding profiles), we can restore structural integrity while preserving the original character of Victorian and Edwardian windows that are so common in South Kensington.
5. Do you work on casement windows as well as sash windows?
Yes. We restore and repair both traditional timber sash windows and timber casement windows (including arched French casements) throughout South Kensington.
6. How does the process work for a window survey in South Kensington?
We carry out a free, no-obligation site survey. Our craftsmen assess the condition of the timber, cords, pulleys, glazing and frames, then provide clear recommendations and a detailed quotation. For listed or conservation-area properties we can also prepare the dual-specification quotes many clients need for planning discussions.
