About Advanced Sash Windows
A small sash window specialist based in Maidstone, working across Kent, London and the South East since 2016 — rated 5.0 from 84 Google reviews.
Advanced Sash Windows, trading as Sashworx, is a sash window repair and restoration company based at 5 St Andrews Road, Maidstone. We have been trading since 2016, the team is led by Harry, and we hold £5m public and employers’ liability insurance.
What we believe about old windows
Most sash windows that get replaced did not need replacing. The box frames in Victorian and Georgian houses were built from slow-grown timber that lasts far longer than anything sold today, and the decay is nearly always local — a sill, a bottom rail, the last few inches of a stile. Cut that out, splice in new timber, re-cord the sashes and seal the gaps, and the window will outlive the plastic one that would have replaced it.
That is the whole business: keep the original window, make it work, and tell people straight when it genuinely is past saving.
- Trading since 2016, based in Maidstone
- 5.0 out of 5 from 84 Google reviews
- £5m public and employers’ liability insurance
- Listed building and conservation-area work as a matter of routine
- Domestic work and commercial subcontract work for councils, developers and managing agents
- We will beat any like-for-like written quote
Where we work
From Maidstone we cover the whole of Kent and Greater London, plus Surrey, East Sussex and Essex. There is no travel charge within Kent and London.
Areas we cover
Work we have finished recently
