Bespoke Timber Flush Casement Windows

Timber flush casement windows are a traditional style used in many conservation projects and suited to buildings dating back several centuries.

At Patchett Joinery we can design and customise our flush casement windows to complement the period and style of your property, to ensure the finished product fits with your current windows and blends with the existing features.

We use only the best quality sustainable timber, energy efficient glass and the latest technology to produce the highest standard of windows that are made to last.

  • British Manufacturer
    British Manufacturer
  • Eco-Friendly Products
    Eco-Friendly Products
  • Extensive Guarantee
    Extensive Guarantee
  • Energy Efficient
    Energy Efficient
Design Features


  • Made from engineered timber
  • Excellent thermal and weather performance
  • Independently tested
  • Enhanced security as standard
  • Guaranteed performance
  • Stainless steel hardware, hinges, locks and fixings as standard
  • Fully gasket sealed for greater weather resistance
  • Hardware locking system and hinges are concealed from the elements
  • Multipoint locking – securing the window shut at several points along the length of the frame and helping to combat the effects of seasonal movement
  • Multiple draught seals, for maximum thermal and acoustic insulation


  • Large choice of handles and colours
  • Available in any RAL paint colour including stain and two tone (different colour on the inside and outside)
  • Double glazed “U” value can be 1.4 W/M2K, triple glazed “U” value can be 0.99 W/m2K
  • Restrictors available to limit the opening to prevent small children opening the window too far
  • Slender timber sections to replicate original window details
  • Can be locked in ventilation mode to provide background ventilation with peace of mind that the window is locked shut
  • Security hinges protectors – provide additional security to the hinges
  • Trickle ventilation – to meet current building regulations where required trickle vents are concealed into the frame of the window with an external timber canopy to conceal them on the outside
  • Egress hinges – where required and if the dimension allow egress hinges allow the sash to open 90 degrees for escape
  • Range of opening configurations including top hung, side hung, egress, flying mullion (providing fire escape on narrow windows)
  • Bay and bow windows – all configuration options are possible, even curved on plan with curved glass!
  • Facilities to provide shaped, arched, bullseye, raked and arched sightline
Paint Process

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Using only a water-based painting system which allows timber to “breathe” and adapt to climatic changes, our finishes provide maximum protection against weathering, fungal attack and UV degradation. The water-based application significantly reduces harmful emissions and disposal issues associated with solvent based systems.

Working with our paint partner, Sikkens, we can finish in any RAL colour, stain, or match against all well known paint ranges and brands. With the ability to have different internal and external finishes, your windows and doors can be finished just as you require.

Our factory is audited quarterly to ensure that the finished product has the highest quality paint finish and performance you would expect.

Hardware Accessories
  • 101 Bulb End Handle

    101 Bulb End Handle

  • 101A Offset Bulb End Handle

    101A Offset Bulb End Handle

  • 101B Offset Reeded Handle

    101B Offset Reeded Handle

  • 101C Offset Spoon End Handle

    101C Offset Spoon End Handle

  • 101D Offset Bulbous Handle

    101D Offset Bulbous Handle

  • Connoisseur Handle

    Connoisseur Handle

  • Teardrop Handle

    Teardrop Handle

  • Monkey Tail Handle

    Monkey Tail Handle

Timber Options
  • Accoya


  • Engineered Redwood

    Engineered Redwood

  • Red Grandis

    Red Grandis

Glass Options
  • Low Iron Glass

    Low Iron Glass

  • Wired/Fired and Pyro-Tech Glass

    Wired/Fired and Pyro-Tech Glass

  • Anti – Sun Glass

    Anti – Sun Glass

  • Acoustic Glass

    Acoustic Glass

  • Obscure Glass

    Obscure Glass

  • Decorative Glass

    Decorative Glass

  • Leaded Glass

    Leaded Glass

  • Gas


  • Spacer Bars

    Spacer Bars

  • Planitherm Total+ and Low Emissivity (Low E) Glass

    Planitherm Total+ and Low Emissivity (Low E) Glass

  • Standard Glass

    Standard Glass

  • Toughened and Laminated Glass

    Toughened and Laminated Glass

Technical Downloads and Product Brochure

Patchett Product Guarantee

All our timber windows and doors come with fantastic guarantees giving you the assurance that our products are made to last. Every window and door we make and supply is engineered using the highest quality materials and will require minimum routine maintenance.

  • 30-year* manufacturer-backed guarantee against rot. (50 years with Accoya*)
    5-year* manufacturer-backed guarantee for paint on factory finished windows (Up to 12 years with Accoya*)
  • 10-year*manufacturer-backed guarantee on weather seals
  • 10-year*manufacturer-backed guarantee on double-glazed units
  • 5-year*manufacturer-backed guarantee on hardware