Energy efficient windows

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Stylish & Secure

Explore our range

Light & spacious

Explore our range

About Liniar

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.

10 Year Guarantee with Liniar


All Liniar products are guaranteed (please see individual product details for specific details of guarantees).

Liniar products made in Britain

Made in Britain

The Liniar range is designed, manufactured and tested by Liniar Ltd here at our modern extrusion facility in Derbyshire.


Quality Assured

All products have been subject to the strictest quality standards, in a factory backed with ISO 9001 accreditation.

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Choose your sector

Liniar’s innovative uPVC products are sought after by a wide range of users, from architects and specifiers to installers and homeowners. Whatever your query, we can help you decide which Liniar uPVC products would be suitable for your challenges.

Please select from the options on the right to find information tailored to your particular sector or area of interest.

Why choose Liniar?

Fully Guaranteed

Liniar uPVC window profile, doors, conservatories, decking, fencing and building products are fully guaranteed. Please see individual product details for specific warranty details.

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Windows and doors

One of the newest and most technically advanced window systems on the market, Liniar was designed from scratch to take advantage of the very latest developments in uPVC window profile engineering technology.

The multi-chambered design of the Liniar profile, or window frame, makes it far more energy efficient than other uPVC window suppliers. The EnergyPlus system achieves an A+ energy rating with cost-effective double glazing and has the ability to create a carbon neutral dwelling by adding triple glazing, if required. Liniar’s latest 90mm window system has also been certified with Passive House status by the PassivHaus Institute.

Made from lead-free, fully recyclable uPVC, Liniar windows and door profile offers many benefits for fabricators, installers and homeowners, designed as they were with the wisdom of over 500 years of industry experience.

The Liniar range offers a selection of different window styles and designs, together with fully matching products including residential and composite doors, bi-folding doors, patio doors, French doors and conservatories. All products are available in a wide choice of colours and foils to give homes, offices and commercial developments a fully bespoke appearance.


The Liniar conservatory roof matches perfectly with its range of uPVC windows and doors and enables homeowners to benefit from one of the most thermally efficient conservatories in the UK.

With a design team constantly looking to enhance the roof beyond its already high standards, the Liniar conservatory roof includes patented technology such as its anti-slip glazing retainer and EnergyPlus twin wall top cap for robustness and thermal efficiency.

Available in a wide choice of colour and foiled options, each Liniar roof is individually designed and built to meet your exact needs, and supplied to installers in kit format. With built-in features enabling fast fitting and easy on-site adjustment, you can be sure of a smooth installation.

Each Liniar roof comes with a choice of polycarbonate or glass panels, with over 20 variations of sealed unit options and tints, including self-cleaning glass.  The Liniar roof can also be supplied as a lantern-style roof for use in orangeries, and teams perfectly with Liniar’s bi-folding doors to open up an entire wall of your home.

Liniar conservatory roofs can be ordered through a Liniar Approved Fabricator – find your nearest fabricator.

Decking and fencing

The Liniar decking and fencing ranges are popular with the holiday home market but all products are ideal for a maintenance free garden, with more and more consumers saving time. Made from lead-free uPVC and up to 86% recycled content, there’s no sanding, painting or staining required to keep them looking their best.

Liniar deckboards are 225mm wide with a tongue and groove design and have concealed fixings for an attractive finish. You can be sure they won’t rot, rust, warp or splinter, unlike timber deckboards. Liniar decking is designed to be built on a galvanised steel sub-frame, offering superb strength and durability.

The Liniar balustrade system features the only fully sculptured range on the market, available in a wide range of colours and foiled finishes and a choice of attractive pickets, skirting, caps and other accessories.

Liniar uPVC fence posts, fence panels and gravel boards are installed in exactly the same way as more traditional fencing products such as concrete or timber, but are lighter to carry and require less maintenance.

Find your nearest Liniar installer here or contact us for more information.

Piling and retention

The Liniar range of piling and retention systems is used by a wide variety of industries and organisations all over the UK, as well as the domestic market. With unparalleled versatility, plastic piling is made from 100% recycled PVC and offers a lightweight, cost effective alternative to more traditional steel piling.

From the rail network to flood defence systems, from construction and landscaping to environmental applications and the erosion prevention of ponds and waterways, Liniar piling is ideal for water and soil retention. What’s more, it’s made in the UK, making it even more eco-friendly.

Liniar plastic piling is available in six different styles including full pan pile, trench pile, flat pile, z-ribbed and box format piling as well as Liniar’s innovative log pile. The latter can be used anywhere due to its supreme strength, but also adds a decorative finish to parks, gardens and public areas. Lightweight to carry, plastic piling is surprisingly strong and sturdy, and has even been installed up to 11.5m deep.

Liniar uPVC piling can be ordered direct from Liniar and delivered to almost anywhere in the UK using our own transport. Find out more here.


Soffits & Fascias

Liniar soffits and fascias are designed and manufactured at the same UK extrusion facility as its range of windows, doors and roofs – using the same high quality manufacturing processes and materials.

Not only are Liniar soffits and fascias made from the same 100% lead-free uPVC, the foiled woodgrain finishes are factory fitted in-house and therefore match our other products perfectly.

Roofline Accessories

As well as soffits and fascias, Liniar’s comprehensive roofline range also incorporates a full set of associated trims and mouldings, ventilation options and dry verge.

The roofline accessories are designed and manufactured at the same UK extrusion facility as its range of windows, doors and roofs – using the same high quality manufacturing processes and materials.

Not only is Liniar’s roofline range made from the same 100% lead-free uPVC, the foiled woodgrain finishes are factory fitted in-house to ensure they match our other products perfectly.

Building Products

Liniar fabricators provide a ‘one stop shop’ for window fitters – collect your installation supplies when you pick up your windows.


Exclusively available through Liniar fabricators, the Liniar Approved building products range comprises foam trims, silicon sealant, window boards, cleaners and adhesives, fixings & glazing packers & accessories.

Designed to match

To finish off installations beautifully, ensure your internal foam trims are colour matched. The Liniar range is foiled using the same materials, machinery and processes as our windows, doors and conservatories, assuring you and your customers of a perfect match and a single point of guarantee for the whole installation.

One stop shop

Next time you collect your windows, doors or conservatory products from your Liniar fabricator, ask for the range of Liniar Approved installation supplies to help you install them perfectly.

For the quickest response to your query, please use the departmental email addresses below

Liniar HQ is open Monday to Friday from 9am – 5pm.

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