Twsplastics have now the Evolution Software installed so we can offer INSTANT QUOTES all Liniar Upvc Windows and Doors Systems . If your Trade or Diy , phone fax or email your requirements through to Craig or Clive for the Most Competitive Prices in the area . We offer the Liniar Fully Beveled & Fully Sculptured Casement Window. We Offer Linair Flush Casement Windows , Liniar Residential & French Doors , Inline & Bi Folding Doors . We also offer Endurance Composite Doors With Liniar Outer Frames with a massive range of door styles and colour options.

Hand Finished uPVC Windows

Each Liniar window frame and sash undergoes a rigorous hand finishing procedure by a skilled operative. This ensures our customers receive only the highest quality Liniar windows.

Industry Leading Energy Efficiency

Liniar window systems offer superior thermal efficiency as they are capable of achieving WER (Window Energy Ratings) A+12 or a U value as low as 1.0 W/(m2·K) with triple glazing.

Yale High Security Locking Systems

All of our Liniar windows are supplied with Yale high security Shootbolt locking systems as standard alongside a 10 Year Security Guarantee.

Specially Designed for Triple Glazing

The Liniar uPVC window profile is unique since unlike other window systems, it has been specifically designed to accomodate a triple glazed sealed unit with its 36mm glazing bead.

Better for the Environment

The Liniar profile is extruded using 100% lead free and recyclable materials. This means our windows meet UK and EU legislation ahead of time.

10 Year Liniar Guarantee

All of our uPVC Liniar windows carry a 10 year manufacturer’s guarantee against cracking, warping and discoloration.


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Liniar Flush Sash Windows

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Liniar French Casement Window

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Liniar Run Through Horn Window

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Liniar Sliding Sash Windows

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Liniar Tilt And Turn Window

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Liniar Bay Window

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