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020 7275 9862

Sash Windows London

Welcome to White Cat Joinery, The Traditional Window and Door Master Craftsmen

White Cat Joinery is the leading manufacturer and installer of traditional windows and doors in London and the surrounding areas. No job is too big or too small and we pride ourselves on retaining the heritage of period homes when we restore or repair traditional windows and doors so that our rich history is carefully retained.

Our small, experienced team boast over 20 years of invaluable experience. We operate from out of our London workshop and every product and component we make is bespoke, crafted to fit your project perfectly. Our window and door service is extensive, including restoration, repairs, new windows and doors, draught proofing, double glazing, new sashes, new cords and so much more. We also design and install French doors, timber front doors and wooden bi-folding doors.

We are used to working on period properties, for example, Edwardian, Georgian, Regency and Victorian homes. We also work closely with conservationists and on listed buildings, making sure that everything is in keeping with its heritage.

With a number of exceptional customer testimonials, accreditation to the industry’s leading bodies, full insurance, workmanship guarantees and certification, our customers trust us to deliver an outstanding job along with exceptional customer care. To obtain a free, no-obligation quotation, click here or alternatively, contact us on 020 7275 9862 where one of our team will assist you with your query.

Our Services

Trust White Cat Joinery to Take Care of All Your Sash Window Needs

We are White Cat Joinery, the premium joiners for sash windows and casement windows. Our long-established reputation is a testimony to our craft, for more information on what we do, click individual services.

Our Products

White Cat Joinery has years of industry experience restoring and replacing sash windows, casement windows, front doors and French Doors. All our products are handmade in our London workshop, for more information about our products and how it is made, click individual products.


All of our window and door work complies with building regulations and is fully guaranteed for 10 years and our customers always recommend us. While word of mouth is invaluable and testimony to our skill, to give you extra peace of mind, our company is fully accredited by the leading industry organisations. When you use White Cat Joinery, you get a fully insured, experienced business that is certified and accredited to the following bodies:

Acredited by

So, how does it work ?

FREE Estimation Process

It’s so easy to get an estimate from White Cat Joinery. Simply visit our online estimate form, an easy to fill-in tool asking you a series of short questions that relate to your windows or doors. Following submission, one of our team will get back to you within 24 hours with an online, no-obligation quotation. Following this, we advise that we come and visit your home to discuss your requirements in detail.

Here’s how it works:

  • Access the form here
  • Select the type of work you want (sash windows, casement windows, French Doors)
  • Select the type of sash window or casement window or French Door
  • Select "Continue"
  • Add in the detail, e.g. select whether you want double glazing, draught proofing or even full restoration
  • Select "Continue"
  • Fill in your name, email address and post code in the boxes
  • Select "Continue"
  • Leave the rest to White Cat Joinery – we will send you a quotation within 24 hours

Areas We Cover

White Cat Joinery is proud to service Greater London.