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Wooden Sash Window Specialists

Beautifully crafted box slash and sliding sash windows, custom made for your project.

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Survey, Supply and Installation Services

An efficient end-to-end solution from a trusted, reputable and reliable contract partner.

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Quality Products, Competitive Quotes

Sash windows made from the finest timbers… at a competitive price.

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Wooden Sash Window Specialists – London & South East

Based in Essex and primarily serving construction partners across London and the South East, Flexwood’s wooden sash window specialists offer a tried-and-trusted turnkey solution. Our experienced team survey, supply and install the highest quality timber sash windows, helping you to bring your projects in on time and on budget.


Traditional sash windows, modern methods

Beautifully crafted from the highest quality woods, our box sash and sliding sash windows are the perfect complement to new builds, developments and renovations of Georgian, Edwardian and Victorian properties.

Sympathetically styled to meet architectural, aesthetic and regulatory requirements, they deliver the charm of traditional sash windows with the benefits of modern materials and advanced production methods.

With our extensive experience in social housing projects and historic, listed and municipal buildings, we’ll ensure your windows are custom made with precision and installed with dedicated attention to detail.

Traditional Sash Windows
beautifully crafted timber windows

Sash windows built to your specifications

Every building or development has different criteria, so we supply box and sliding sash windows in a wide range of options, made-to-measure for each individual opening:
  • Softwoods, hardwoods and Accoya
  • Single, double and triple glazed
  • Laminated, toughened, tempered and heat soaked glass
  • Standard or specialist fittings
  • RAL colour matching or stained finishes

Sash window surveys, supply and installation


Our onsite surveys are quickly followed by the production and presentation of window drawings for your feedback, with revisions made where required ready for your final approval – then we’ll set a date for installation.
Upon delivery to site, our installation team will remove any existing windows and make good the surrounding brickwork if required, before professionally fitting your timber sash windows and cleaning up any work debris.

Areas we cover

We offer our window manufacture and installation services throughout the UK, although with our head office in Loughton, Essex, we regularly provide support to our construction partners in areas such as:
  • London – Hackney, Kensington, Camden
  • Essex
  • Hampshire
  • Sussex
  • Kent
  • Berkshire
  • Surrey

Flexwood – your trusted partner for wooden sash windows

We’ve been the chosen timber window and door partner for a range of housing organisations, construction companies, developers and architects for over 25 years, building many strong, long-term relationships along the way.
So if you’re looking for exceptional quality wooden sash windows, supplied and installed to your site by time-served and trusted specialists, please get in touch for a no-obligation chat.

Discuss your project

Call our sash window specialists on 0208 502 4606