Sash window repair & restoration in Kent and London
Keep your original timber windows. We fix draughts, rattles, broken cords, rot and sticking sashes — usually for a fraction of the cost of replacement.
- 20+ years restoring period sash windows — homes, blocks and commercial sites
- Insured to £5m · 10-year draught-proofing guarantee · listed & conservation-area experience
- Got a quote elsewhere? Send it — we’ll beat it*
What’s wrong with your sash windows?
Pick the problem — each page explains the fix, the typical price and how long it takes.
Should you repair or replace sash windows?
Short answer: if the frame is sound, repairing and draught-proofing is usually cheaper than replacement, keeps the original character and is often the only option for listed buildings or conservation areas. We’ll tell you honestly on survey which windows are worth saving.
Read the full repair vs replace guide →| Repair & draught-proof | Full replacement | |
|---|---|---|
| Typical cost / window | £100–£1,280 + VAT | Usually several times more |
| Keeps original glass & timber | Yes | No |
| Listed building consent | Rarely needed for like-for-like repair | Usually required |
| Disruption | Windows stay in place | Frames removed |
| Draughts & rattles | Eliminated with concealed seals | Eliminated |
How it works
From the first photo to the finished window — no pressure at any step.
- 1 Send photos or call Tell us what’s wrong — a rough price often comes back the same day.
- 2 Free survey We inspect every window and explain what’s worth repairing.
- 3 Fixed written quote One price per window. No surprises, no pressure.
- 4 Tidy, on-site work Dust-sheeted, cleaned up daily, backed by our guarantee.
What customers say
★★★★★ 5.0 average from 84 verified Google reviews“Harry is absolutely fantastic and his work ethic is second to none. He is extremely knowledgeable and has beautifully fixed the sash windows in my grade II listed building. I would recommend him wholeheartedly.”
“Can’t recommend Harry highly enough. He completely renovated my sash windows, and the quality of his work is outstanding… The windows look fantastic and work perfectly. Everything was left clean and tidy too.”
“Needed an emergency repair done and Harry was amazing. Responded very quickly and gave a clear quote. Fitted us in very quickly and our window is now better than it’s ever been.”
Sash window contractors for councils, developers & property managers
We work as a specialist subcontractor on social housing, listed and period property schemes across Kent, London and the South East — single blocks or whole portfolios. Fully insured, RAMS supplied, and used to working alongside main contractors and conservation officers.
Areas we cover
Based in Maidstone, we repair sash windows across Kent, London and the South East. Every town has its own page with local projects and reviews.
Sash window questions, answered
How much does sash window repair cost in Kent?
Draught-proofing is £280 + VAT per window, replacing broken sash cords £250 + VAT per window, freeing a sticking or painted-shut sash £100 + VAT per window, slim double-glazed units in your existing sashes £980 + VAT per window, and a full restoration £1,280 + VAT per window. Rotten timber is priced per section repaired, from £80 + VAT, because it depends on how much needs cutting out. You get a fixed written quote after a free survey — and if you have a cheaper like-for-like written quote from another company, we’ll beat it.
Can you draught-proof sash windows without replacing them?
How does your price beat promise work?
Do I need permission to repair windows in a listed building?
How long does it take to restore a sash window?
Can you fit double glazing into my existing sashes?
Everything in writing, before we start
Prices published in full
Draught-proofing £280 + VAT, cords £250 + VAT, restoration £1,280 + VAT. See the price list
10-year draught-proofing guarantee
Ten years on draught-proofing, one year on all other workmanship. What it covers
5.0 from 84 Google reviews
Read them on our Google profile, then ask us anything. Common questions