North London | West London | South London

Sash Window Specialist London

London Sash Window Specialist offer top quality sash window repairs, professional draught proofing, double glazed sashes and bespoke timber window replacement. Serving London and surrounding areas.

In recent years there has been an explosion of sash window companies in London.  Avoid the cowboys and trust Sash Window Specialist to restore your period home. 

We have been overhauling sash windows and installing double glazed sash frames for over 20 years in London. In that time we have built a reputation for providing the highest possible quality of craftsmanship at affordable prices. 

London sash window refurbishment and repairs are covered by two of our branches.

Sash Windows in North London, West London and Central London

 Allow Sash Window Specialist (London & Berkshire) to renovate & upgrade your wooden sliding sash windows to improve the comfort, energy efficiency and security of your home.  Based in Reading, Berkshire we offer coverage in North London, West London and Central London.  We are the Sash Window Specialist UK head office and offer the full range of Sash Window Specialist conservation services for timber sash window restoration, renovation, double glazingdraught proofing, replacement or repair.   Our reinstate sash service removes window conversions and restores them to double-hung sash windows.

We also restore and repair period doors, french windows and casement windows.

Our sash window workshop in Reading, Berks is dedicated to producing bespoke windows and doors to the highest possible standards. We can replicate any style of timber casement, door or sash window, supplied with either single glazing or Low-E double glazing.  Castellated, Gothic, round & other difficult sash window types that other timber window companies can’t manage are our specialty.  Accoya Acredited. 

Contact Liam today for a friendly chat about your sash window & door renovation and repair requirements.

Mob :  07799 023326

Workshop: 01189 699407


  • review rating 5  It is now a year since Liam fitted our first double glazed sash windows in our five sitting room windows. A friend wisely advised us to have one room done first. We were so pleased with the result that we had all the other twelve windows replaced. We live in a conservation area and it was important that the new windows looked exactly the same as the originals. The work was completed so efficiently and so neatly that we cannot recommend Liam and his company highly enough. We survived the cold spells of this winter with our thermostat set several degrees lower than in the past. On stormy days, we no longer have any rattling windows.

    thumb Carl Gilbey-McKenzie
  • review rating 5  Great job speedily done. Liam advised us on how best to use our money rather than up selling us. Will use again, recommended

    thumb jonathan fox
  • review rating 5  Liam is great - did a brilliant job for us a few years back restoring some old sash windows and we have since recommended him to others. Would definitely use again.

    thumb Sam Elworthy
  • review rating 5  We were delighted with our sash windows. Liam and Paul refurbished the majority of windows in our house, and created new sashes to replace modern metal frames and to use in our extension. They were pleasant, extremely knowledgeable and did a great job at a great price. We have had no problem with the windows in the five years since, and they still delight us. We recommend them highly.

    thumb Rachel Caseby
  • review rating 5  Liam fitted replacement double glazed sashes to my property back and front and I have been delighted with them. I had old secondary glazing in the front which was ugly and did not do the job. I now no longer have condensation dripping down the windows and the house is quieter and warmer. After doing some research into specialist companies I am so pleased that I chose the Sash Window Specialist. Liam is very knowledgeable and the work carried out was done with the minimum of disruption. My new windows have transformed the house. Very happy with the Sash Window Specialists and would certainly recommend without hesitation.

    thumb JANE MAGUIRE

South London Sash Windows


Sash Window Specialist Sussex & South East pride ourselves on providing a complete service to address all your period window and door requirements.  From sash window overhaul and draught-proofing to complete window replacement with double glazed bespoke joinery, we have the right solutions. 

We repair, renovate & upgrade glass in all traditional wooden windows and doors to improve the energy efficiency and security of your period property.

Based in Crawley we cover the South East inc South London, Kent, Hampshire, Surrey, East & West Sussex Inc Crawley, Brighton, Guildford, Horsham, Worthing, Tonbridge.

Contact Gary today for a friendly chat about your sash window & door renovation and repair requirements.

Mobile:  07748 648429 

How much does it cost to refurbish sash windows in London?

We are the affordable sash window and door renovation experts in London, see our price guide to estimate how much our period window and door renovations cost.  You will find us very competitive although London sash window prices are typically towards the top end of the prices in our UK price list, due to congestion and parking charges.

At Sash Window Specialist London we believe in quality first and so we have no need to hide behind stock images or employ professional photographers. The images throughout our site were taken by our own tradesmen, ensuring you see an accurate representation of our high quality craftsmanship. For more examples of our work see our Blog and Case Studies.

Our Sash Window Services

With so many years experience restoring sash windows & doors we can usually provide an accurate estimate from photos alone.  Attach your pictures below or e-mail us including close-up shots of any obvious problem areas.  In your message provide as much information as possible, including an approximate size of the window height & width. We will send you an estimate by email before arranging a meeting to confirm your specific requirements.

London & South England


London Boroughs of Barnet, Camden, Enfield, Hackney, Haringey, Islington, Westminster

NW1, NW2, NW3, NW4, NW5, NW6, NW7, NW8, NW9, NW10, NW11,NW12, NW13, NW15, NW15, NW16



London Boroughs of Brent, Ealing, Hammersmith and Fulham, Harrow, Hillingdon, Hounslow, Kensington and Chelsea

W1, W2, W3, W4, W5, W6, W7, W8, W9, W10, W11, W12, W13, W14, W15, W16



London Boroughs of Croydon, Kingston upon Thames, Lambeth, Merton, Richmond upon Thames, Sutton, Wandsworth

SW10, SW11, SW12, SW13, SW14, SW15, SW16



London Boroughs of Camden, City of London, Kensington and Chelsea, Islington, Lambeth, Southwark, Westminster

“Advanced Solutions for Historic Windows”