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Doors, windows & stairs
Sash Window Restoration
Splice out the rot, rebalance the weights, keep the original glass.
- Free measured survey
- Fixed written quote
- Workshop-made, site-fitted
- 10-year workmanship guarantee
- Fully insured
Walls in your home are rarely square and floors are rarely level. A sash window restoration that is built in a workshop to a nominal size will show every millimetre of that. We survey first, scribe on site, and finish so the joint line disappears.
How we build it
Moisture matters more than most people expect. Timber is conditioned before machining, and anything going into a kitchen, utility or bathroom is specified in materials that will not swell at the bottom edge. That is why the base of a well-made unit still closes cleanly after five winters.
Finish and materials
Every finished job gets a short handover: what the surface is, how to clean it, and how to adjust a hinge if a door drops after the heating has been on for a season. Adjustment is normal in timber and takes about two minutes once you know which screw to turn.
| Typical guide price | from £480 per linear metre, fitted |
|---|---|
| Typical lead time | 3–5 weeks from signed drawings |
| Typical construction | Spliced repair in Accoya |
| Guarantee | 10 years on workmanship |
Guide prices are indicative. Real cost depends on the run length, ceiling height, finish and what goes inside. The indicative price tool gives you a range in about a minute, and a free survey turns it into a fixed written quote.
Where we fit sash window restoration
We survey and fit across 76 counties. Pick your area for local detail:
Often specified alongside
Bespoke Internal Doors
Doors made to the opening you have, not the opening a merchant stocks.
See detailTimber Front Doors
Solid hardwood entrance doors with modern locking and weather seals.
See detailTimber Sash Windows
Traditional box sash profiles with slim double glazing and draught seals.
See detailTimber Casement Windows
Flush or stormproof casements built to the original sightlines.
See detailStraight answers
Sash Window Restoration — common questions
Is it worth restoring rather than replacing?
If the boxes and pulley stiles are sound, almost always. Restoration keeps the original glass and joinery, is cheaper, and in a conservation area or listed building it is frequently the only option that will be approved.
How do you deal with rot?
We cut the decayed timber out entirely and splice in new — usually Accoya — with a scarfed and glued joint. Filler over rot is a cosmetic fix that fails within two years; we do not do it.
Can you save the original glass?
Yes, and it is worth saving. Old cylinder and crown glass has a movement and a slight distortion that no modern glass reproduces. We de-glaze carefully, keep it aside and re-putty on reassembly.
What is involved in overhauling the mechanism?
Ease the sashes, renew the cords, check and rebalance the weights, replace worn pulleys, and refit the beads with new brush seals. Done properly the window runs with one finger and stays where you leave it.
Can double glazing be retrofitted into original sashes?
Sometimes. The rebate has to be deep enough to take a slim unit, and the sash has to be strong enough for the extra weight. Where it is not viable, secondary glazing or a high-performance draught-proofing overhaul gets much of the benefit.
Will draught-proofing alone make a difference?
A significant one. Most of the discomfort from an old sash is air movement, not glass conduction. A full brush-seal overhaul typically cuts the draught to near zero for a fraction of the cost of replacement.
How long does restoration take per window?
One to two days per window on site for an overhaul. If sashes need to go back to the workshop for splicing, allow two to three weeks and we fit temporary boarding or a holding sash.
Do you paint them afterwards?
We prepare, prime and can apply the full finish, or leave them primed for your decorator. Repaired areas need the same coating system as the rest for the finish to wear evenly.
Start with a measurement
Tell us the space — we’ll tell you what it costs
Every quote starts with a free measured survey, so the price you get is the price you pay. No deposit is taken until you have drawings you are happy with.