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A guide to installing aluminium windows in period properties
13 February 2025 | General
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.
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
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
Colours
Colours
Pure White RAL-9010
Matt White
Matt Brown
Jet Black RAL-9005
Grey
Gloss White
Gloss Off White
Dark Red
Dark Grey
Dark Green
Dark Brown
Dark Blue
Cream
Black
Anthracite Grey RAL-7016
Airforce Grey
Downloads
Downloads
Glass Options
Glass Options
Unglazed
Standard Tough
Standard Self Clean
Solar Control
Self Cleaning
Self Clean Solar Control
Satin Obscure
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 WindowsWhat 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.
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