Scores based on 247 reviews

Reliability & timekeeping

Invoice history based on 222 reviews.

Invoice History
Charged as per quote / estimate98.2%
Above quote / estimate: kept informed1.8%
Appointments reported as missed (6 months) 0
Average score 9.77
247 reviews
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London Sash Works Ltd is a small, family run business based in Middlesex. We provide a full range of repair, restoration and replacement services for all timber sash and casement windows. 
We pride ourselves on having a flexible approach, always trying to find the best overall package to suit each customer's pocket.
Both domestic and commercial contracts undertaken
Steve Vanstone, the business owner personally oversees all our jobs, which are carried out by our full-time team of carpenters

NEW FOR 2017: we have partnered with a local shutters business to offer our customers top quality plantation shutters at a competitive price
NEW FOR 2016: We have opened a workshop in Hampton enabling us to  carry out even better quality restoration work and double glaze your original sashes.

Call 0800 160 1550
There are many ways we can improve your timber sash windows.....

  • Full refurbishment of sash openers and box frame
  • Sill and lining replacements
  • Repair / replace any rotten sections
  • Draught proofing
  • Re-glaze broken panes of glass
  • Fit double glazing units into original sashes

We use top quality materials including the
Repair Care 
Timber repair system 
If your original sashes are beyond restoration or your budget allows, we can fit lovely new timber double glazed sashes into the refurbished box frame we have the expertise to make exact replicas of your existing windows, no matter how intricate.
Complete replacements: 
Either made to exactly replicate what you have already or made to your specification 
Beautiful new timber box frames and sashes that combine both a traditional aesthetic with modern efficiency
Full draught proofing with brush pile along all moving surfaces 
Architrave and sill nosing fitted
Leave fully painted and finished inside and out
FENSA certificate provided
Insurance backed guarantee from the Glass and Glazing Federation
UPVC sash windows
In response to demand from customers, we have now started to fit new uPVC sashes from the best supplier in the market. There are many cheaper versions on the market but these are really special. 
Complete with wood grain finish they are very close to the originals and are significantly cheaper than hardwood
UPVC is not for everyone, but these are the best on the market and are actually very practical where access for maintenance may be an issue. 
The UPVC sashes we fit are from Roseview
You can view their product range by clicking on this link
Who will call at my house and who will do the actual work?
Steve Vanstone (the business owner) will call at your home to explain your options and provide you with any necessary quotations. We have two teams of dedicated staff who cover the area and Steve will remain responsible for overseeing any works and be your main point of contact until the job is completed. 
Conservation area? 
No problem, your new sashes will look exactly the same as the old ones. Including configuration of glazing bars and if necessary the shape of the decorative horns and internal moulding profiles
When will I need to paint them again? 
For all our external paintwork we use a combination of trade Dulux Weathershield (which says 'guaranteed for 6 years' on the tin) and TEKNOS micro porous paint (for new sashes). How long paint actually lasts will depend on which direction the window faces and how sheltered it is. For example a window facing South gets both the sun and all the wet weather and will need repainting before a similar window on the other side of the house
Do we work all year round?
Yes we do. In this country it is just as likely to rain in January as in August! We use plastic sheeting to keep the rain away from the area where we are working.

Based in

Teddington, TW11 0RH

Works in

West London, Middlesex and Surrey.