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Safe & Secure

Our aluminium bifold doors are tested to PAS24 standards for the best in building security levels. They also comply to Document Q regulations and can be specified as a Secured By Design product.

Range of styles

Depending on your customer’s requirements, choose open-in or open-out configuration with left or right sliding options. For the best in personalisation, there is over 200 RAL powder coated finishes to choose from.

Made to measure

With an increased amount of individual door sashes available with aluminium bi-fold doors, compared to its uPVC rivals, these can be used to fit a wide range of opening sizes.


Here at SVS Frame Tech we supply a wide range of energy efficient double glazed Roof windows.

Whichever style roof window you are looking for, we have the right Aluminium double glazed roof windows for your home.


Our double glazed roof windows are manufactured to the highest standards for energy efficiency. We use the latest technology to improve thermal efficiency and reduce heat loss. 

10 year guarantee

Extensive range of styles

Vast collection of colours, hardware and glazing options

Long lasting, low maintenance

Made to measure windows.

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Our Roof Lanterns keep you Warm in winter, cool in summer.

The ultra-slim frame will provide a clean, crisp and modern look to your home.

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The SVS Frame Tech Flat Glass Rooflight is fitted with high-efficient glazing, keeping you nice and warm in the winter and suitably cool in the summer. Great for use in kitchen extensions.


Our Energy Efficient roof windows have warm edge glazing as standard. This glazing helps to enhance your window's performance and helps to keep heating bills down in the winter.

Roof Windows

Make your home warmer, quieter and more secure by choosing our very latest energy efficient roof windows.

Whether you're looking for a modern or traditional look to your home, our roof windows will complement any home in Yorkshire, Nottinghamshire & Derbyshire. 

All our range of windows are carefully crafted by a hugely experienced team and built using the highest quality materials with energy-efficient double glazing units.


Our double-glazed windows are available in a wide range of colour options, varying from Modern Anthracite or brilliant white.

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