• uPVC Sliding Sash Windows - Vertical Box Sash
  • uPVC Sliding Sash Windows - Vertical Box Sash
  • uPVC Sliding Sash Windows - Vertical Box Sash

Sliding Sash Windows


Sliding Sash Windows are the perfect choice when looking to achieve a traditional appearance. Sliding sash windows open vertically and feature a tilt facility for easy cleaning purposes. With a wide range of ironmongery, Georgian bar designs and any RAL colour, you can make your design as modern or traditional as you like. With advanced security and thermal performance built-in as standard, our vertical sliding sash windows are the perfect choice for your project.

Sliding Sash Windows

PVC Vertical Sliding Sash Windows White

Key Features

Corners ▷ Standard Welds

Glass ▷ 24mm Double Glazing (standard)

Style ▷ Georgian Bar Designs

Horns ▷ Option for Run-Through Horns

Colours ▷ 14 Standard Combinations

U-Value A Rated - 1.4 (standard)

Security ▷ High Security Standard (PAS24 available)

Warranty ▷ 10 Years

From £336 inc VAT - free delivery

Sliding Sash Windows - Seamless Corner Welds

Key Features

Corners ▷ Seamless Welds

Glass ▷ 24mm Double Glazing (standard)

Style ▷ Georgian Bar Designs

Horns ▷ Option for Run-Through Horns

Colours ▷ 5 Standard Woodgrain Options

U-Value A Rated - 1.4 (standard)

Security ▷ High Security Standard (PAS24 available)

Warranty ▷ 10 Years

From £436 inc VAT - free delivery

Sliding Sash Windows - Mechanical Corner Joints

Key Features

Corners ▷ Traditional Mechanical Joints

Glass ▷ 24mm Double Glazing (standard)

Style ▷ Georgian Bar Designs

Horns ▷ Option for Run-Through Horns

Colours ▷ 5 Standard Woodgrain Options

U-Value A Rated - 1.4 (standard)

Security ▷ High Security Standard (PAS24 available)

Warranty ▷ 10 Years

From £528 inc VAT - free delivery

uPVC Sliding Sash Windows Explained

From parts, options and components, to measuring and installation guides, click through the tabs below to learn everything you need to know about uPVC Sliding Sash Windows before placing your order.

High Security as Standard

At External Doors Online, we understand the importance of keeping your home safe and secure. Our range of PVC sliding sash windows are high security as standard, fully fitted with insurance approved locking mechanisms and locking keeps. With the option to upgrade any of our PVC sliding sash windows to PAS24, you can rest easy knowing that your home is safe and secure for years to come.

PVC Vertical Sliding Sash Windows Georgian Agate
PVC Vertical Sliding Sash Windows PAS24 Security

Exceptional Thermal Performance

With ever rising energy costs, it’s important to choose a high quality sliding sash window that’s going to reduce your bils. Manufactured using multi chambered frame profile, our sliding sash windows use the power of air as an insulator to stop the internal warmth escaping. Our PVC sliding sash windows come with A rated argon filled double-glazed units as standard, allowing the windows to achieve an overall U-Value of 1.4 W/m2K.

PVC Vertical Sliding Sash Windows Energy Ratings

Measuring & Installing Your Sliding Sash Windows

There are mainly two different ways in which the windows will be originally installed; brick to brick or check reveal. Both methods are explained in more detail below

Brick to Brick

You will see about 20-40mm of visible brick showing on the outside.

How to measure?

Measure between the external brickwork opening and deduct 10mm both in width and height.

Check Reveal

The full width of the brick is visible on the outside

How to measure?

Measure between the external brickwork opening and add 40mm to the width and 20mm* to the height, with equal 20mm* sitting behind the brick. (*Providing there is sufficient clearance to do so.)

PVC Vertical Sliding Sash Windows Chartwell Green

uPVC Sliding Sash Window Colours

With any of our uPVC Sliding Sash Windows, you can choose a colour that suits your property perfectly and that gives it that first impression you’ve always dreamt of. As standard, all of our windows and doors come in a smooth white finish, although because every home is different, we offer a large range of different colours in both a smooth and woodgrain finish.

Our PVC Sliding Sash Windows are available in 14 standard colour combinations and come in the choice of a smooth or woodgrain finish. If you are looking for a more unique finish, you can choose any bespoke RAL colour to achieve a truly one of finish

PVC Vertical Sliding Sash Windows Colours External Doors online

PVC Sliding Sash Window Features

PVC Sliding Sash Window Hardware

PVC Vertical Sliding Sash Windows Hardware

PVC Sliding Sash Windows

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