Onyx Bespoke Doors and Windows London


Onyx DW has been creating tailor-made casement timber windows all over North London and the broader regions of London for several years, always using the highest of quality woods such as Meranti, Sapele and Oak.

We offer a variety of designs and ideas to support your needs in fitting with your home, all our wooden products can be highly customised, and we can provide a variety of glazing options- soundproofing, acoustic glass, draughtproofing to mention a few. We also offer many colour options – these timber casement windows can be professionally colour sprayed, chosen from our vast colour palette – choose to have a different shade to complement your interior décor internally.

At Onyx DW we offer a variety of purpose-built casement windows, with a high level of customisation to suit whatever type of home you have. We pride ourselves in the quality and knowledge of our team, and the service they provide within this bespoke area of window fitting. Our casement windows have the added benefit of resembling traditional sash window, however, with clever craftsmanship, they open outwards. All once more created using only the finest of woods. 

Our wooden casements can be tailored to be either traditional or contemporary, they will complement every design need, with the added element of being factory paint coated, dual layers of protection which will maximise security and minimise maintenance — not forgetting the benefits of the enhanced thermal glass, which in turn makes our wooden casements more energy efficient than ordinary double glazing.

At Onyx DW we pride ourselves on working with clients to devise a beneficial solution to a need, rather than embed an off the shelf product into an exclusive design requirement. Our knowledge allows us to cater to your specific design requirements, to develop it into a credible, well-suited and visually-compelling product.

Regardless of the size and intricacy of your development, we will ensure our timber windows provide a perfect fit, finish and specification and are delivered on budget within project timescales. To ensure this, we can be flexible in how we work with you, including:

  • Supply only;
  • Supply and installation;
  • Full project management encompassing initial measurement, design, manufacture and fit;
  • Provision of services including product performance consultation, product testing and bespoke designs

Contact a member of the team here to book your complimentary quotation.


"Fantastic service from Onyx company. Very competitive price and excellent quality windows and workmanship. Your fitters were extremely polite and carried out the work to a very high standard and as always cleaned everything up as if they were never there. We have now completed the transformation of our house with all windows and doors. We would certainly recommend using you to all of our family and friends. "

John Macintosh, Company Name

Onyx Bespoke Doors and Windows London