The most up-to-date brand of uPVC profile on the market. With a focus on research, development and design, the Liniar range continues to push the boundaries when it comes to product innovation.
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Standard frame

Composite Doors

Although Liniar doesn't manufacture composite door slabs (panels), composite doors can be supplied with a Liniar 70mm uPVC frame - ask your Liniar supplier for the choices available.

Liniar composite door

A stunning entrance


can provide immediate 'kerb appeal' for your home - and with the number of style options available, there's sure to be one to match your character. 

perfect frame

Liniar composite doors are manufactured by specialist nationwide fabricators, which means they have access to a huge range of door slabs from different specialist composite door companies – all surrounded by a PVCu frame made from Liniar’s

, energy efficient profiles.

Liniar composite door
Liniar composite door

superb insulation

You have a world of choices when it comes to colour, style, glazing, security and optional extras - and the frames themselves contain all of Liniar’s design features for a superb seal and thermal performance.

Technical information

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Frame Material
Sculptured or Chamfered
Frame Depth
Patented Bubble Gasket
Recycled material
Contains Recycled Material

Inherently thermally efficient, Liniar composite door frames work to keep homes and businesses more comfortable through the colder months. Due to their exceptional design, when combined with an energy efficient composite door, the frames can achieve A+ standards.

70mm Composite Door FAQs

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Liniar designs and tests products, extrudes the PVCu profiles and delivers them to independent specialist manufacturers and resellers all over the UK. You can find your nearest with a simple postcode search.

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Contact us

It’s easy to get in touch with Liniar. Fill in a quick form and your enquiry will be directed to the correct department. Note our office hours are Monday-Friday, 8:30am to 5pm and we endeavour to respond within 24 hours.

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Product information

BS EN 12608

BS EN 12608

BSI EN 6375

BS EN 6375

BSI ISO9001 logo

ISO 9001