London · Family run since 1985
Sash windows brought back to life, not thrown away
Refurbishment, cord repair and draught proofing for period homes across London — carried out in situ by our own fitters.
Repair before replacement
We only quote new joinery when the original is genuinely beyond saving.
Time-served fitters
No subcontracted labour — the person who quotes is the person who works on your house.
Clean, tidy, on time
Dust sheets down, windows working before we leave, rooms left as we found them.
A family business
Three generations of London joiners
Sash Services started in a Chiswick lock-up in 1985 with one van and a bench. Four decades on we still work the same way: survey the window properly, repair what can be repaired, and be honest when it cannot. At Sash Services, we specialise in the repair, refurbishment, renovation, and replacement of sash windows. With over 20 years of experience, our skilled team provides everything from sash cord replacement and draught-proofing to complete window refurbishment and full replacements. We take pride in preserving the character of traditional sash windows while improving their performance, security, and longevity. Using quality materials and expert craftsmanship, we restore your windows to their former glory and deliver long-lasting quality you can rely on.
About usWhat we do
Our services
From a snapped cord on a Tuesday morning to a full set of new hardwood sashes, it is all handled by the same team.
Before & after
The same window, six days apart
A first-floor Victorian sash in Crouch End: painted shut, cords gone, putty crumbling. Spliced bottom rail, re-corded both sides, rebalanced weights, brush seals and two coats of low-sheen paint.
Reviews
What London homeowners say
All 5-star, Google verified reviews.
“Jason did a great job. First thing that stood out was his amazing manners! Tenants also commented what a nice guy he was.”
Claire Rostron · 8 January 2026 · Google verified
“Jason was a real professional. Great work, quick, clean, everything was great.”
Lorenzo Maria Russo · 26 November 2025 · Google verified
“Jason came to replace a snapped cord and upgrade the other. Super quick to book in and he arrived in the time frame he stated and got to work straight away, left the area tidy and has done a great job! Would not hesitate to recommend the company and Jason and bonus... our dog loves him. Thanks Jason!”
Sita Sharp · 5 November 2025 · Google verified
“We booked Sash Services to replace a broken cord - Jason did a great job with minimal fuss. Would definitely use again.”
Nicola McAleer · 23 February 2026 · Google verified
Get a free, no-obligation quote
Send us a photo of the window and we will usually come back the same day with an honest idea of cost.