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Every new double glazed, wooden casement windows we manufacture and install across London is made to measure.

We manufacture casement windows to suit both period and modern homes, made to your specification. Beautifully finished, robust, secure and thermally efficient. We are also experts in suppling casement windows for homes in conservation areas and listed buildings.

home iconThe Sashed casement window product range includes:

  • Avialble in Flush or Stormproof profiles
  • Fully finished in the factory with 4 coats of spray paint
  • Multiple seals for optimal draft and noise reduction
  • Double glazed, with acoustic and conservation options
  • UK and EU thermal and safety standards compliant
  • Conservation and heritage styles
  • Modern security features
  • Specialised casement systems
  • Casement window bays
  • Comprehensive ten year guarantee
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    Need some Inspiration?

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    View our timber storm proof casement window up close

    Storm proof casement window

    The Sashed storm proof casement (Lipped) windows are manufactured with the opening window overlapping the frame to give excellent performance and weather ratings. The outward opening storm proof casement is the most frequently chosen wooden window design in the UK. The profile reflects a proven ability to withstand exposure to adverse weather conditions. Internally glazed with a modern concealed four point locking system, the design provides high security features compliant with Secured by Design criteria. See our Ironmongery section for more details.
    If required, we can also make your casement windows conform to listed building and conservation area requirements, using a combination of our flush or storm proof profiles, discrete double glazing, and/or traditional single glazing & putty. Check out our conservation windows here.
    As you’d expect, each casement window is made to your individual needs. We can create any design or pattern, allowing you to have either wonderfully modern windows or reproduction windows to retain the period look of your home. If you can’t find the window you need in our standard range then we offer a free replication service, it’s simple… just send a picture of your window to to kick off the process.
    Key features of a storm proof casement window:
  • High energy and thermal performance
  • High noise reduction levels
  • Superior protection against drafts and water
  • High security, using multiple locking points
  • We also offer European style tilt and turn casement windows, which are available upon request.

    View our wooden flush casement window up close

    Flush casement window

    The Sashed traditional flush casement (In Line) window is particularly suited to period properties such as listed buildings and especially those subject to conservation requirements. Flush casement windows are manufactured with tradition in mind, but we still use the latest technologies and adhere to the highest performance thermal criteria in their design. The flush design is characterised by an opening window that sits within the frame to create a flush finish externally – the perfect choice for period and listed properties. Internally glazed with a modern concealed four point locking system, the design provides high security features compliant with Secured by Design criteria.
    Key features of a flush casement window:
  • High energy and thermal performance
  • High security, using multiple locking points
  • Ideal for period properties in conservation areas
  • Suitable for listed buildings
  • Flush casement window from Sashed

    Both our flush and storm proof casement styles come complete with our quality promise, the perfect finish and choice of ironmongery

    rain iconSample pricing

    A 1000mm2 casement window, two opening windows, in finger-jointed pine with four coats of microporous paint, clear double glazing, including warm edge spacers and ironmongery. Example price £486.00 plus VAT.


    All our casement windows (storm proof and flush) are manufactured to high standards and come with our comprehensive 10-year guarantee as standard. Check out our guarantees here.
    We only use the highest quality slow grown grade 1 finger jointed pine or meranti hardwood for all windows and doors, the choice is yours. We can also offer oak windows and doors, however this requires custom pricing and we are unable to offer instant pricing. Please email and we’ll be able provide pricing in oak.
    For glazing we utilise the latest technology in thermal performance. All our double and triple glazing units are argon filled. As you’d expect we offer all kinds of toughened and obscured glazing options and all our glazing comes with warm edge spacers, so it’s difficult to tell our windows are even double glazed, which is critical in order to keep an original look to your windows and property. Click here to see our glazing options in more detail.
    You can also choose from a range of Georgian glazing bars and beading, in both contemporary and traditional styles.
    Quality wooden casement windows


    All our windows are finished to an immaculate standard and are spray painted in our factory with four coats of paint. You can choose traditional white or another colour from our Sashed RAL colour chart.
    Your windows will be fully finished with no need to paint, saving you time and money. Check out our Inspiration Gallery for some ideas.
    Sashed also offer a colour matching service to Farrow and Ball’s paint range. See our Farrow and Ball(TM) colour matching service for more details.
    Spay painted wooden casement windows


    To finish off your beautiful windows Sashed offer a choice between traditional period or modern ironmongery. We use friction hinges as standard. Our standard finishes are brass, polished chrome, satin chrome and black monkey tail. See our Ironmongery section for more details and pictures.
    Check out our range of casement window styles in our Inspiration Gallery. Check out our range of casement profiles in our Inspiration Gallery.

    ironmongery iconFitting

    We have an amazing fitting team who operate in Greater London who can not only fit your windows and doors but can also undertake modifications to the size or shape of your openings, for example, if you are replacing a sliding sash window with a French door. Our standard installation usually includes making good both inside and outside walls and disposal of old windows and doors, but other options, such as repainting of walls are available depending on your individual requirements. Check our fitting services page for full details and FAQ’s.
    The sashed fitting team

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    Contact Us

    Address: Sashed Ltd, 19 Eastbourne Terrace, Paddington, London, W2 6LG
    Email: Tel: 0800 195 2939
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