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Sash window servicing and draught proofing

Servicing and draught-proofing

If your sash windows are jammed, or the cords are broken, then a service and draught proofing from us will get them working smoothly again. It will eliminate draughts, rattles, save heat, energy, money and will improve sound-proofing.

Man using a tool on a wooden window frame.

Is this for you?

  • Are your windows cold and draughty?
  • Do they rattle?
  • Have you got a broken cord?
  • Are they noisy?
  • Is it hard to open and close them?
  • Are they jammed shut?
Man using a tool on a wooden window frame.


  • Your windows will no longer rattle and feel draughty.
  • Our draught-proofing system will eliminate all the draughts.
  • The room will feel warmer and will have improved sound-proofing.
  • Your windows will open and close smoothly without getting stuck.
  • Your windows will stay open without falling down.
Man using a tool on a wooden window frame.

How do we do it?

We remove the sashes; then we can clean the sash box. We check that the sashes fit squarely within the sash box and re-shape the sashes if required. We repair any rot and replace any missing putty. Next, we install a new top of the range draught-proofing system, re-balance the sashes using additional lead if required and re-fit the sashes using a highquality waxed cotton cord. For more detailed information on how we do it, click below 

Sash window servicing case studies

This project was a refurbishment of existing sash windows in a Victorian property in Wimbledon.

East Molesey – Full Service

This job consisted of 18 windows, all of which were fully serviced and draught proofed. We also replaced all of the cills, repaired all of the existing rot and finished off the windows with beautiful new furniture.

Full restoration – Chiswick

A full sash window refurbishment at a beautiful house in Chiswick. Renovation of two square bay windows and a large stained glass window.

SashWise fully restored the original sash windows in this stunning Victorian house in Mortlake.

SashWise fitted new Accoya double-glazed sash windows into the original sash boxes at this beautiful Edwardian detached townhouse in Hampton.

We installed 5 x new double glazed sashes into this pretty Victorian home in Kingston upon Thames.

The original sash windows had been removed from this beautiful Victorian cottage in Twickenham. Our client wanted the windows changed back to their original style.

We completely restored 20 original timber sash windows though out this gorgeous Victorian house in Richmond.

Our client completely restored the property and wanted to replace the windows with a more robust solution, keeping the original features in the windows.

We replaced the original single glazed windows in this beautiful Victorian House in Teddington with new hardwood double glazed sashes.

To find out more about our draught-proofing process contact us for a no obligation chat

Our other services

Sash window draught proofing

Servicing and draught-proofing

If your sash windows have broken cords or are stiff or jammed shut then this service will restore them to their original smooth working order.

Georgian sash window

Sash window repair and restoration

We completely and sympathetically restore your windows, so they will look like new without losing any of their original features.

Hardwood double glazed sash windows

New hardwood double glazing

If you do not require complete window replacement we can make new double glazed timber sashes to fit your original box sash frames.

Victorian sash window

New hardwood sash boxes

We can supply and fit new hardwood sash boxes complete with double glazed sashes that exactly replicate your original windows.