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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Bi-fold doors

Liniar bi-fold doors feature between 2 and 7 glazed panes. Doors fold neatly away to allow the entire aperture to be opened up - meaning you can enjoy unrivalled standards of accessibility and spaciousness.


What are Bi-Fold Doors?

A popular choice for homeowners to allow unrivalled access to gardens, bi-folding doors can add the 'wow' factor to both homes and commercial buildings.

'Bi-fold doors' is the general term for multi-panelled, glazed door systems that fold and slide. All Liniar bi-folds create a stunning entrance and offer high security and energy efficiency along with letting in natural light.

Our Bi-Fold Door Range

Bi-folding doors are designed to offer a seamless flow between the inside of your home and outside, making them perfect for patio areas - and with a stunning appearance, bi-folds are often included in home improvement plans. Liniar was the first UK systems company to offer a bespoke, designed-from-scratch uPVC bi-folding door, and has since developed its range to add a choice of two other bi-fold systems, including a heavy-duty aluminium bi-fold door. Which style and opening configuration you choose depends on the needs of your property and project.


Liniar standard bi-folds in white with swimming pool

Standard uPVC Bi-Fold Doors 

We’re proud to have designed the very first bespoke uPVC bi-fold door in the UK - and the original Standard bi-fold is still a sector leader for its thermally efficient profiles, slim fixings and hidden hinges. With U-values as low as 1.3 W/m²K, the standard bi-fold is cost-effective and secure and features Liniar's patented bubble gasket for superb weather resistance.


ModLok™ Bi-Fold Doors 

If you’re looking for an award-winning solution for your home, then allow us to introduce uPVC ModLok™ bi-folding doors. This unique design won the coveted Queen’s Award for Innovation in 2017. The ModLok can span up to 7 panes wide and features a patented aluminium outer casing, or exoskeleton, with a multi-chambered uPVC core, resulting in superb strength and stability - as well as Secured By Design security.


modlok bi-fold
Alumina bi-fold doors in 7016 Grey

Aluminium Bi-Fold Doors 

Liniar has applied it's design and development expertise to creating a unique Aluminium door system, Alumina. With bi-fold doors able to comprise up to 7 panes with a maximum width of 8.5m and panes as high as 2.5m, Alumina includes an innovative thermal lock to prevent the transfer of heat and save energy. Doors can be foiled in a wide range of colours for a warm-touch exterior, and achieve Secured By Design security standards.


Bi-fold Doors 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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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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