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The Liniar range of lead-free PVCu products is designed and manufactured by HL Plastics at its state of the art factory in Derbyshire. Products include lead-free uPVC windows, doors, bi-fold and patio door sets and conservatories, as well as decking, fencing and piling and retention systems. Liniar invests in product design and development to ensure the latest technology is utilised in advance of legislative requirements. Liniar windows achieve Windows Energy Ratings of A++ with ease, using cost effective double glazing. Explore the brochures and case studies to find out why Liniar products are perfect for large and small projects alike, offering more benefits than other uPVC systems.
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Product catalogue
With Liniars lead-free, multi-chambered profile, patented co-extruded bubble gasket, glazing flip...
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Product catalogue
The full range of Liniar PVCu products, with consumer-facing benefits - including energy efficien...
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Product catalogue
Many systems companies are using the same window and door profile that they brought to the UK mar...
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Bay and Bow Window 70 mm
PVC-U bay and bow windows.
- L10 Windows/ Rooflights/ Screens/ Louvres
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Casement Window 70 mm
PVC-U casement windows.
- L10 Windows/ Rooflights/ Screens/ Louvres
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Composite Door Outer Frame 70 mm
PVC-U composite door.
- L20 Doors/ shutters/ hatches

Image gallery

A beautiful Liniar Flush Sash window in grey
Alumina - true aluminium bi-fold from Liniar
Alumina bi-fold doors with Liniar windows in grey
Bay window
Bi-Fold window
Casement window

Quality Assurance

Liniar is certified to the following Quality Assurance schemes/standards:
PAS 24: 2007 PAS 24 Enhanced security performance requirements for door assemblies. Single and double leaf, hinged external door assemblies to dwellings
BS EN 12608: 2003 12608 Unplasticized polyvinylchloride (PVC-U) profiles for the fabrication of windows and doors. Classification, requirements and test methods
PAS 23-1: 1999 PAS 23-1 General performance requirements for door assemblies. Single leaf, external door assemblies to dwellings
BS 7950: 1997 7950 Specification for enhanced security performance of windows for domestic applications

Trade names


Contact details

Flamstead House,
Denby Hall Business Park,
Derbyshire, DE5 8JX
Tel +44 (0)1332 883900
Fax +44 (0)1332 883901

Alternative contacts

Business Development
Charlotte Curtis
Technical Support
Carl Buckley