UPVC Liniar Casement Windows

LiniarStylish, practical and versatile, Hart Windows offers a superior range of UPVC Liniar casement windows.

Designed to the very highest levels of security and energy efficiency, our Liniar casement windows are a superb addition to any home.

Liniar uPVC Casement Window

How To Install A Liniar uPVC Window

Tailor Your UPVC Liniar Casement Windows

Our UPVC Liniar casement windows are available with astragal bars and Georgian bars for those who are looking to add character.

Choose from a wide configuration of openings, colours, glass styles and hardware. Tailor your UPVC casement window to your preferred specifications.

Innovative Design

The UPVC Liniar casement window offers slim sightlines which not only look great aesthetically but also work to maximise light.  Stylish and modern, the Liniar casement window will enhance the appearance of any property.

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Energy Saving Trust Recommended

Our UPVC Liniar casement windows are Energy Saving Trust Recommended. Featuring Liniar’s revolutionary multi-chambered profile, our UPVC casement windows achieve an energy rating as high as A+12. This means you benefit from extremely high thermal efficiency.


Liniar UPVC casement windows are 100% lead free and 100% recyclable. When you choose our Liniar casement windows you will benefit from technologically advanced profile which meets EU and UK legislation ahead of time, ensuring you reduce your carbon footprint and help the environment at the same time.

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Key Features

  • Six Chambered Profile: Our energy plus range achieves the highest energy ratings available.
  • High Security: Yale shootbolt locking systems as standard, fully compliant with Secured By Design specification. Our windows are also covered with a 10 year security guarantee.
  • Fully Accredited: Kitemark accredited for security and weatherability

10 Year Warranty

Our Liniar casement windows come with a 10 year manufacturer’s warranty against warping, splitting and discolouration so you can be confident our windows will last the test of time.

Get in Touch

For further information or technical advice regarding our Liniar UPVC casement windows, get in touch online or call us on: 01252 623 404