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Sliding sash windows on property with outside foliage
Modern sliding sash window heritage property

Market leading design

Vertical sliding sash windows are commonly used in heritage and conservation areas, and are a great addition for properties designed with Georgian and Victorian architecture.

At Direct Trade Windows, we use the VS600 system from Smart, delivering the best performance for any property and combining traditional stylings with the advantages of modern thermal technology.

These windows also feature an innovative ‘tilt’ function which allows for effortless cleaning – perfectly suited for high rise buildings.

Our vertical sliding sash windows are:

  • Fully customisable – Tailored to complement any style.
  • Thermally efficient – Overall U-value of 1.6 W/m²K.
  • Safe – Equipped with a ‘tilt’ function, these windows suit high rise buildings.
  • Durable – Fully tested to ensure maximum weather resistance.
  • Expertly engineered – Featuring a concealed drainage and coupling option.
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VS600 Vertical Sliding Sash Windows

The VS600 vertical sliding sash window from Smart can be used in heritage and conservation areas, while its excellent and natural ventilation rates mean that it’s also suited to high rise buildings.

Thanks to a flush opening with no projection into or out of the building, this window is ideal for commercial buildings such as schools or hospitals.

  • Innovative ‘tilt’ operation to facilitate external glass cleaning
  • Low line glazing gasket that accepts 28mm sealed units
  • U-value of 1.6 W/m²K
  • Concealed drainage and concealed coupling option
  • Optimised fabrication through square cut outer frame
  • Maximum width of 1600mm and height of 2800mm
  • Maximum weight of 50kg
  • 28mm glazing
  • 126mm frame depth
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White vertical sliding windows
Sash windows on modern brick home
  • VS600 Vertical Sliding Windows
  • Colours
  • Downloads
  • Glass Options
  • VS600 Vertical Sliding Windows

    Technical Specification

    Brand VS

    Material Aluminium Polyamide

    Thermally Broken Yes

    NBS Available Yes

    WER Rating C

    U Value 1.6W/m²K (using correct glass unit)

    Document L Compliant Yes

    BS 6375-1:2009 Yes

    Vertical Sliding Max Width (mm) 1600mm (based on frame height 1300mm)

    Vertical Sliding Max Height (mm) 2800mm (based on frame width 750mm)

    Vertical Sliding Max Weight (kg) 50kg (per sash)

    Glazing (mm) 28mm

    Frame Depth (mm) 126mm

    VS600

    Colours

    Colours

    Pure White RAL-9010

    Pure White RAL-9010

    Matt White

    Matt White

    Matt Brown

    Matt Brown

    Jet Black RAL-9005

    Jet Black RAL-9005

    Grey

    Grey

    Gloss White

    Gloss White

    Gloss Off White

    Gloss Off White

    Dark Red

    Dark Red

    Dark Grey

    Dark Grey

    Dark Green

    Dark Green

    Dark Brown

    Dark Brown

    Dark Blue

    Dark Blue

    Cream

    Cream

    Black

    Black

    Anthracite Grey RAL-7016

    Anthracite Grey RAL-7016

    Airforce Grey

    Airforce Grey

    Downloads

    Glass Options

    Glass Options

    Unglazed

    Unglazed

    Standard Tough

    Standard Tough

    Standard Self Clean

    Standard Self Clean

    Solar Control

    Solar Control

    Self Cleaning

    Self Cleaning

    Self Clean Solar Control

    Self Clean Solar Control

    Satin Obscure

    Satin Obscure

    Laminated Security

    Laminated Security

    Gallery

    Vertical Sliding Sash Windows - Your Questions Answered

    Discover everything you need to know about our VS600 Vertical Sliding Sash Windows. From their unique features to their suitability for heritage and modern buildings, we've got you covered.

    Get a Free Quote for VS600 Sash Windows

    What are Vertical Sliding Sash Windows, and where are they commonly used?

    Vertical Sliding Sash Windows are a classic window design popular in heritage and conservation areas, especially in properties with Georgian and Victorian architecture.

    What is the unique feature of these windows for cleaning, and in what kind of buildings is it most beneficial?

    These windows have an innovative 'tilt' function, making external glass cleaning effortless. They are ideal for high-rise buildings, such as schools or hospitals, due to this feature.

    Can these windows be customised to match different architectural styles?

    Yes, our Vertical Sliding Sash Windows are fully customisable and can be tailored to complement any architectural style.

    What is the thermal efficiency of these windows, and how does it benefit a property?

    These windows have an impressive overall U-value of 1.6 W/m²K, ensuring excellent thermal efficiency and energy savings for your property.

    What are the key specifications of the VS600 Vertical Sliding Sash Windows?

    The VS600 windows have a low line glazing gasket that accepts 28mm sealed units, concealed drainage, concealed coupling option, and a maximum width of 1600mm, height of 2800mm, and a maximum weight of 50kg. They also feature 28mm glazing and a 126mm frame depth.

    Close up view of steel look windows

    Delighted Customers Share Their Experiences

    At Direct Trade Windows, our commitment to excellence is reflected in our exceptional customer satisfaction.
    We take great pride in our impressive 4.9 rating on Google, a testament to the unparalleled quality and service we offer.

    Check Out Our Google Reviews

    Highly recommend this company for doing a fantastic job in fitting windows and doors. Very good quality windows , fantastic service and all for a good price. Attention to work on there fitting. We are extremely happy

    Jack Vasiliou

    Brilliant company, everyone I dealt with through from initial quoting to installation were very helpful and friendly, the fitters were excellent, the product is fantastic and the price is reasonable, what more can you ask for!

    Ryan Flynn

    Superb company. Highly recommend them. Proper engineers for design and fitting. We changed spec due to some building changes and they were clear and responsive to queries and redesign. Really trustworthy group of people from sales to design to fitting. I would use them again without hesitation. Warm regards Daniel

    Daniel Champman

    The team delivered great sliding doors at a more competitive price than other suppliers. They responded to our changing development schedule without making it an issue and have provided great aftercare as well.

    Daniel

    We had been severely let down by a previous supplier, but when we turned to Direct Trade Windows for help, we hit the jackpot. Helping us to transform a residential development in Hersham, they supplied us with high-quality, ultra-slim Cortizo sliding doors, complete with the bespoke sliding options that we needed. Our requirements were very specific and not readily available on the market, but Direct Trade Windows really went the extra mile to help us out, coming through with quality products and excellent service. We will definitely be using their services again.

    Park Lane Developments

    Nothing but praise for this outfit. It was a pleasure to work with them. It was a nerve-wracking undertaking for us, the biggest single expense to fit three large window/french door combos in our extension, yet the team made it a relatively relaxing experience with their professionalism and good humour. Thank you all so much for everything you and the whole team have done to get from the initial sale (well done Hash!) to the fun visit we made to the workshop, to the design and its multiple iterations (thank you Taz!) and finally to the installation. Thoroughly recommended.

    Eloise Price

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