Sash Windows


A Unique Collection of Sash Windows


Our unique collection of sash windows aims to replicate the timeless designs gracing some of the most beautiful, historic properties in the country.


Our box sash windows also use modern methods, allowing for easy future maintenance and decoration as and when required.

Timber sash windows are among the most attractive, enduringly popular of all UK window styles. Whether you need replacement sash windows or haven’t had sash windows before, JTP Joinery can help. We provide a complete Devon sash windows service, encompassing design, manufacture and installation, for residential and commercial projects. Simply contact us to discuss your requirements.


Distinctive Design and Impressive Craftsmanship


Introduced in the late 1600s, sash windows became a hallmark of Georgian, Victorian and Edwardian architecture. Numerous period properties have them, and they’re still widely used. What better way to frame glorious Devon scenery!


Sash windows’ distinctive design typically features two panels – the sashes – with either several small panes or large sheets of glass. One or both sashes can slide vertically within the frame. Thanks to our impressive craftsmanship, your timber sash windows will glide smoothly, enabling you to open and close them with ease. When closed, the sashes can be locked together for security.


The sashes’ movement is facilitated by spiral balances in our sash windows, while weights perform this role in our box sash windows. The most obvious difference between a sash window and box sash window is the latter requires a more imposing frame to conceal the weights.

Advantages of Our Sash Windows


  • Our sash windows are designed in an architecturally sensitive manner, crafted largely by hand and built to last.
  • When we replace sash windows, we can match the existing style, including the fine details.
  • Traditional single glazed and slimline double glazed sash windows are available.
  • We carefully select the finest timber, plain and decorative glass, hardware, breathable microporous paints and other materials.
  • Our unique perimeter draught seal system offers enhanced energy efficiency.
  • Our high-quality sash windows are complemented by the highest level of customer service.
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Factory applied, three coat system. Our paints are micro-pourus and available in a variety of colours.

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We offer three standard timber types – multi layered softwood, hardwood and Accoya. Please ask about the benefits of all options.

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Our windows are supplied with high quality locking systems as standard for advanced security levels. Our clip in staff and parting beads add an additional level of security while looking completely traditional.

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Our thermally insulated glazing units are sourced and supplied by the leading supplier locally. These are designed for use with our windows and will far exceed any ‘standard’ double glazed unit. Our beads are applied to the inside of your windows for maximum security.


Our windows are available in traditional or contemporary styles with fully customisable glazing bar designs. We can also offer leaded and stained glass options.

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We have carefully selected traditional looking products that compliment this traditional style of window whilst offering the highest security possible.

Sash Windows FAQs


Where Are the Sash Windows Made?

They’re made in our Newton Abbot workshop in South Devon, using time-honoured techniques and cutting-edge computerised technology.


Should I Choose Sash Windows or Box Sash Windows?

Box sash windows can be more suitable for period properties, as they’re more traditional and grand.

Sash windows have slimmer frames and a more contemporary feel, making them an excellent choice for newer buildings.


Is It Better to Replace or Repair Sash Windows?

If you’re unsure about whether you need sash window replacement or restoration, we can examine your property and help you decide.

Generally, it’s advisable to replace sash windows if they have significant structural issues.


What about Listed Buildings and Conservation Areas?

Our surveyors and project managers have years of experience navigating the legal requirements concerning sash windows for listed buildings and conservation areas. We’re committed to helping customers reach their desired outcome.


Can I Get a Free Quotation?

Absolutely – we offer free, no-obligation quotations and advice. It’s one of the reasons we receive so many 5* reviews.

Interested in our products?


Simply click to get in touch with one of the JTP Team.
We’ll be delighted to help and assist you with your requirements!