Timber Sash Window Repair & Restoration in
South London

We treat every window as a bespoke asset. Our process begins with a careful physical assessment of your frames, sills, and hardware. We specialise in complex repairs, such as replacing broken wax-impregnated cotton sash cords and rebalancing original cast iron or lead counterweights. If your windows are painted shut or suffer from decayed timber, we carefully break the seals or perform precise sill splices using durable, seasoned timber.

This joinery-led method allows us to retain as much original material as possible. By addressing the root cause of mechanical failure rather than just the symptoms, we ensure your sash windows are restored to their intended operational standards, maintaining the authentic sightlines that define your property’s character.

London’s period properties often suffer from cold draughts and traffic noise, particularly those located near busy arterial routes. Our draught-proofing service is designed to solve these issues without compromising your home's historic aesthetic. We machine hidden brush seals into the staff and parting beads, which effectively blocks air gaps around the meeting rails and frame.

This simple, high-impact adjustment significantly reduces heat loss and creates a calmer interior environment by dampening external noise. For homeowners seeking even greater thermal and acoustic control, we also offer double glazing upgrades. These argon-filled, low-emissivity units are engineered to fit into original timber sashes, providing modern insulation while satisfying strict conservation and planning demands.

Rot in the lower box or sill is a common concern for sash windows exposed to the London weather. Rather than suggesting a full window replacement, we often find that the majority of the frame remains sound. We specialise in timber splicing, where we carefully cut away the decayed sections and replace them with new, seasoned timber or Accoya.

This process restores the structural integrity of the frame and prevents further water ingress. Once the splice is expertly joined and primed, it is indistinguishable from the original timber. Our 10-year guarantee on new timber work provides peace of mind that these repairs are built to last, preserving your home's historic fabric for years to come.

If you are dealing with a dropped sash, cracked glass, or damage resulting from a break-in, we offer urgent assistance to secure your home. We understand that a compromised window is a significant concern for your property's security and weather-tightness. Our emergency service is available Monday through Saturday, 08:00 to 18:00.

If we cannot complete a permanent joinery fix on the initial visit, we will board and weather-proof the opening immediately to keep your property safe. Permanent, high-quality timber repairs are then scheduled as a priority. To discuss your requirements or to book a detailed sash window survey and written quotation with Charlie Burgess, call 020 7046 0157.