Sash Window Repair Costs — London
London Sash Window Repairs offer low cost, quality timber repairs and we won’t be beaten.
| Service | Price | What's included |
|---|---|---|
| Overhaul and draught proof | £188 per window | Sashes out, draught seal system installed on all perimeters, new sash cords, new timber profiles, new hardware. |
| Sill replacement | £120 per window | Including splicing styles. Extra if the sill runs a bay or Venetian frame. |
| Replacement sash | from £190 | More for ornate or multiple glazing-bar sashes. |
| Bottom-rail repair | £120 | Most common splice repair — primed and undercoated. |
| Small splice repair | £80 | Plus prime and undercoat. |
| Sash re-cording & counterbalance | £120 per window | Consider the fuller overhaul instead — far better value. |
| Double glazing existing sash | from £480 | Pilkington low-E unit, five-year guarantee on the sealed unit. |
| New double-glazed sash in original frame | from £680 | When the original sash can't carry a DGU. |
| Full double-glazed replacement | from £1,480 | Hard or softwood, fully decorated, modern security. |
Prices shown are honest typical rates. Every London home is slightly different — scaffolding, difficult access, unusually large sashes or listed-building constraints can change the figure. We always quote free of charge before any work starts.
How we price fairly
We're a carpenter's-rate quality trade, not a double-glazing sales operation. Bring us a like-for-like quote from a reputable competitor and if it's genuine we'll beat it.
All prices include
- Free site visit and written quote.
- Five-year no-quibble guarantee on labour and draught-proofing system.
- VAT invoice (5% reduced VAT where eligible on energy-efficiency work).
- Insurance-approved security restrictors on request.
Get a free quote
Call 020 3441 6515 or email support@sashwindowsrepairlondon.co.uk. We quote fairly, in person where possible, and stand behind our work with a five-year guarantee.