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uPVC Sliding Sash Windows For That Classic Look

We specialise in supplying and installing bespoke uPVC sliding sash windows. Our uPVC windows offer an authentic period look with superior thermal performance, weather-resistance and home security than timber windows.

Choose from ECOMax double glazing or Comfort Glass—a specially coated alternative to triple glazing. uPVC windows are available in woodgrain effects in more than 150 attractive RAL colours. A range of sash window furniture includes authentic sash lifts, fasteners and pullers in a variety of stylish finishes.

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    White bay sliding sash window

    Super Slim

    With a width of just 35mm, our meeting rail, the slimmest on the market, delivers unrivalled aesthetics.

    Traditional Horn

    Smooth run-through sash horns with no revealing cap lines or wraparounds

    Optional Deep Cill

    Recreate the authentic timber look with a deeper cill option available

    What is a sliding sash window?

    Sliding sash windows are a common sight in Georgian and Victorian homes consisting of a movable panel that allows you to easily control the ventilation in your home. Our sliding sash windows allow you to retain the original character of your home while improving its performance.

    Just like the originals, they are easily operated. Spring balances are concealed within the framework for easy adjustment and eliminating the need for cords. Either sash can also be tilted inwards to allow for easier cleaning. With traditional features such as an oval-shaped frame, classic sash horns, and authentic Georgian windows, they can be approved for use in conservation areas.

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    What sliding sash windows can do

    Slim appearance

    Featuring a 35mm mid-rail, our sliding sash windows are slimmer than most

    Wide range of options

    Designed to redefine classic sash windows, custom designs include run-through sash horns, no horn and deep cill options.

    Exceptional home security is locked in

    Able to last up to 35 years, our heritage uPVC windows include heavy duty components

    Low maintenance

    Our uPVC heritage windows offer a maintenance-free design that won't rot, crack, warp, or fade throughout their lifespan.

    10 years’ product guarantees

    All new windows carry a standard guarantee for 10 years on fit, function and finish.

    Environmental protection

    As well as offering EcoMax Glass, our uPVC heritage windows incorporate a recycled section and are fully recyclable.

  • Colours
  • Glazing
  • Furniture
  • Additional Features
  • Colours

    Our finishes consist of popular wood effect finishes available in black, white, natural, oak and cream.

    White

    White

    White Woodgrain

    White Woodgrain

    Cream

    Cream

    Cream Woodgrain

    Cream Woodgrain

    Golden Oak

    Golden Oak

    Irish Oak

    Irish Oak

    Glazing

    Our uPVC and aluminium windows come with EcoMAX Glass™, one of the most sustainable glass units on the market. You can also choose Comfort Glass for higher levels of thermal efficiency, security and noise reduction, or decorative glazing, such as stained glass, floral patterned, or modern etched glass.

    Furniture

    Authentic furniture for your sliding sash windows

    A range of window furniture options adds a personal touch to your windows. Choose from elegant designs for handles and window restrictors and pegs.

    Furniture Options

    D-Handle Top Sash

    D-Handle Top Sash

    Lift Bottom Sash

    Lift Bottom Sash

    Tilt-Latch Opening Knob

    Tilt-Latch Opening Knob

    Offset Sash Ring

    Offset Sash Ring

    Sash Ring

    Sash Ring

    Furniture Colour Options

    Black Finish

    Black Finish

    Brass Finish

    Brass Finish

    White Finish

    White Finish

    Chrome Finish

    Chrome Finish

    Steel Finish

    Steel Finish

    Additional Features

    Authentic Timber Look Cill

    Radlington Cills are deeper nosed cills, one at the standard 30mm height and another at a 55mm height; they are reproductions of timber cills.
    Window with a white cill

    Overhead Ventilation

    In overhead, concealed ventilation the external trickle vent is hidden on the head of the outer frame, providing a much-improved finish.
    Window with an overhead concealed vent

    Sliding sash windows to suit period and modern homes

    Our heritage vertical sliding sash windows particularly complement older properties but the many colour and finish options also add a unique character to modern properties. Choose from classic white sash windows, timber effect uPVC sash windows or Chartwell green sash windows.

    Our sliding sash window collection can also be specified in dual-colour options with contrasting exterior and interior colours. There are styles and options available whether you're looking for a Georgian style with an authentic grid, or aiming to capture the ornate detailing of Victorian windows.

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    Grey sliding sash installation on modern home
    Vertical sliding sash windows in orangery

    uPVC sliding sash windows for conservation areas

    Our sash window furniture range includes many original features, including Brighton fasteners, sash horns  and sash pulls. Features such as detail in replicating traditional joinery add to their genuine appearance and mean they are commonly approved for listed buildings and conservation areas where building regulations restrict home improvements.

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    uPVC woodgrain sash windows

    uPVC wood effect sliding sash windows are a popular choice with homeowners looking for the traditional timber appearance but wanting the benefits of uPVC. Ultimate Rose uPVC sash windows are exceptionally thermally efficient with a multi-chambered window profile that keeps the warmth inside. This multi-layered structure, accompanied by other security features, also protects your home from unwanted intruders.

    Unlike other materials, uPVC sliding sash windows, with their traditional design features, are virtually indistinguishable from their timber counterparts and enjoy a maintenance-free life that can last up to 35 years. Finished in an anti-fade coating, they won’t rot, warp or split, even when exposed to harsh weather.

    Based on a Victorian design, our uPVC sash windows have the classic look that will suit any home. Replicating traditional joinery techniques, and with authentic woodgrain textures and finishes, it’s almost impossible to tell uPVC wood effect sash windows from timber sash windows.

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    White uPVC sliding sash windows
    Classic sliding sash windows

    Thermally insulating sliding sash windows

    Our highest-rated double glazed windows have an energy A+ rating (the highest there is). So, you can be sure that they’ll keep the inside of your home at an optimum temperature.

    Efficiency is a result of careful design and engineering. Our windows feature new performance oriented technologies including multi-chambered window profiles, argon-filled inter-pane areas, low-e glass that’s specially treated to reflect heat back into a room, and the newly patented Warm Edge Spacer Bar.

    In a commitment to sustainability we include almost 100% biodegradable EcoMAX Glass™ as a standard fitment on all uPVC and aluminium products. We also offer Comfort Glass that is designed to outperform triple glazing thanks to the inclusion of a tough laminated layer and an effective low-e coating.

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    Replacement sash windows to heighten your home’s security

    Sliding sash windows’ security features include sash fasteners that prevent the window from being opened from outside, sash window stops that limit opening of the window sashes from the inside, and meeting rails that stop them being picked or forced open. there are also safety latches that allow each sash to tilt inwards.

    These sash windows exceed industry standards, giving you peace of mind that your home is safe and secure. Additional features can be included if security is your priority.

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    sliding sash windows

    Compare window styles

    Casement Windows

    Casement Windows

    • Available in high-performance uPVC or aluminium
    • U-values as low as 0.8 W/m2K
    • • Multi-point locking system

    Popular Colours:

    Deep Black
    Anthracite Grey
    Smoke Grey
    White
    Bay Windows

    Bay Windows

    • Available in high-performance uPVC or aluminium
    • U-values as low as 0.8 W/m2K
    • Multi-point locking system

    Popular Colours:

    White
    Elephant Grey
    Anthracite Grey Grained
    Black Brown
    Conservation Windows

    Conservation Windows

    • Multi-point locking system
    • Achieve A++ energy ratings
    • Multi-point locking system

    Popular Colours:

    White
    Black Brown
    Anthracite Grey
    Elephant Grey

    Your Window and Door Journey with SEH BAC

    Replacing your windows and doors is easy.

    Choose the right windows and doors

    Fill out a form online or visit one of our 10 showrooms to see our range of high-quality windows and doors up close and speak to our expert team for any advice on materials, styles, colours, energy efficiency and glazing. Once you are happy with your choice, we’ll provide you with a free no-obligation quote.

    FAQs

    How much will new sliding sash windows cost?

    Thermally sound, industry-accredited custom-made windows must be individually priced to take into account manufacturing to size and any features you wish to specify. We offer a range of finance options to spread the cost of new windows. You can read more about what affects the price of double glazed windows on our site.

    How do I know if my windows need replacing?

    There are always obvious signs like poor fit, rot in wood, loose fittings, and inconsistent lock operation, but sometimes it’s just time for a change. New windows can have a big impact on the outward appearance of your home. See our blog for more on this.

    Which window material is best?

    All our windows are designed for visual appeal as well as security, thermal efficiency and durability. Complete with industry-leading and highly accredited hardware, any of our award-winning replacement windows could transform your home. Read more

    What is A rated double glazing?

    Energy efficiency is often the top priority and it’s no wonder as the bills keep rising. The British Fenestration Rating Council (BFRC) rates window energy performance and publishes results to help you decide which windows are best for you. Read more.

    Begin Your Project

    Get your free quote – with no-obligation to buy. Simply fill in the online contact form below to get started:







      By submitting your details you confirm that you agree to the storing and processing of your personal data by SEH BAC as described in the privacy statement.

      This site uses Akismet to reduce spam. Learn how your comment data is processed.

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      Multi-award winning company

      Here at SEH BAC, we’re proud to have won many prestigious awards for our products as well as our work in the community:

      Installer awards 2022
      G21 Finalist
      SEHBAC showroom winner
      Ultraframe designer winner
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      The best place to narrow down your options and pick up on any points of interest.

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      What folks say about us

      Astonishingly good or room for improvement, it’s all here. Thank you to all our customers old and new. We really appreciate your reviews. Really. Yes, really, really.

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