Sash window repair Greenwich SE10
Hartwell Sash Β· Greenwich Β· SE10

Sash Window
Repair in
Greenwich

SE10 Β· SE3 Β· SE7

Period property specialists serving Greenwich, Blackheath, Deptford and Charlton β€” repair, restoration and glazing upgrades done properly.

Scroll down to see what we do
5.0 Google Rating β˜…β˜…β˜…β˜…β˜…
Up to 5yr Workmanship Guarantee
1 day Most Repairs Same Visit
Free Survey & No Obligation

Sash window repair Greenwich specialists covering SE10, Blackheath and surrounding areas.

About Greenwich

Georgian terraces, Victorian villas β€”
windows worth preserving

Sash window repair in Greenwich requires a careful approach, especially across SE10's Georgian terraces, Victorian villas and conservation areas. Hartwell Sash provides timber sash window repair, restoration, slimline glazing upgrades and replacement sashes throughout Greenwich, Blackheath, Deptford and Charlton.

Around Crooms Hill, Straightsmouth, Royal Hill and the streets running up towards Blackheath, original sash windows are a defining feature β€” often tall and well-proportioned, and worth restoring carefully rather than replacing.

Much of Greenwich is protected for its historic architecture, with many period homes located within Conservation Areas where original sash windows remain an important part of the property's character.

Sash Window Repair Greenwich Services β€”
done properly

Every service carried out with care and precision

01

Sash Window Draught Proofing

Cold draughts and outside noise reduced significantly β€” without changing the appearance of your windows. We replace staff bead and parting bead with precision brush pile seals and fit a brush seal at the meeting rail.

Inspection Sashes removed Brush pile beads fitted Meeting rail sealed Re-hung & tested
Draught proofing and careful like-for-like repairs are often possible without changing the appearance of the window. For listed buildings, flats or properties with specific restrictions, we recommend checking consent requirements before work begins.
02

Sash Cord Replacement

Windows that slam shut or won't stay open β€” fixed properly. We replace both sash cords on both sides and rebalance both sashes as standard. One visit, done properly.

Staff beads removed Both sashes out Pulleys oiled Re-hung & balanced
We replace both cords on both sides as standard β€” not just the broken one. Both wear at the same rate.
03

Glass Replacement

Cracked, broken or misted panes replaced carefully β€” preserving the original timber frame. Heritage glass available for Conservation Areas throughout Greenwich.

Free survey Glass sourced to spec Carefully removed New glass fitted Putty finished
04

Timber Repair & Repainting

Rotting timber repaired, not replaced wherever possible. Proximity to the Thames and the riverside exposure in Greenwich means timber windows here are particularly susceptible to moisture damage and paint failure. We address the root cause β€” not just the visible damage β€” and restore rather than replace wherever possible.

Full inspection Damaged timber cut back Epoxy rebuild Primed & finished Ironmongery replaced
05

Slimline Double Glazing Upgrade

Upgrade single glazing to slimline double glaze units β€” fitted within the existing frame, preserving the original look entirely. Better insulation, less noise, no change to the character of your property.

Frame assessed Rebate cut Slimline units fitted Rebalanced Finished & painted
12mm slimline units with argon gas filling β€” designed to retain slim heritage-style sightlines, with significantly better thermal performance. Often considered for period properties and conservation areas where the original appearance must be retained. Suitability depends on the property and local restrictions.
06

Full Sash Replacement

When a window is genuinely beyond saving β€” we supply and fit heritage timber sash windows made to match the original design of your property. Not uPVC. Timber, made properly.

Free assessment Timber sashes to measure Box frame checked Fitted & balanced Glazed & painted
We always try to repair before we replace. Replacement is only recommended when genuinely necessary.
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"Nick replaced broken sash cords quickly and efficiently. Very tidy work β€” wouldn't hesitate to book again."

Janet Bohrer Β· Google Review
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"Outstanding craftsmanship. You can tell this is done by someone who really cares about the work."

Konstantin Prichodka Β· Google Review
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"Clear communication and fast work β€” exactly what you want. Arrived on time, left everything spotless."

AndrΓ© Gomes Β· Google Review
Conservation Areas & Listed Buildings

Working in
Greenwich's
protected streets

Much of Greenwich sits within Conservation Areas administered by the Royal Borough of Greenwich, within the UNESCO World Heritage Site buffer zone. There are many listed buildings across SE10 β€” and any work affecting their appearance requires careful consideration.

In many cases, draught proofing, cord replacement and careful like-for-like repairs can be carried out without changing the appearance of the window. For listed buildings, flats, replacement work or properties under specific restrictions, we always recommend checking the correct consent requirements before work begins.

✦ Grade II Listed Crooms Hill Royal Hill Straightsmouth Blackheath Deptford Charlton Woolwich Eltham

Free survey
in Greenwich

We visit your property, assess every window and give you an honest quote β€” no call-out fee, no obligation, no pressure. We aim to respond the same day.