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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 window
Alumina

Bi-Fold Windows

Bi-fold windows are a striking addition to any home and the ability to open up an entire wall with a Liniar bi-folding window is an increasingly popular option.

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Liniar bi-fold windows

seamless integration

Folding fully open with a smooth rolling mechanism, Liniar's aluminium bi-fold windows offer unrestricted views and enhanced ventilation whilst retaining wall space for furniture. 

High performance

Designed and manufactured in the UK from high-quality aluminium with slim,

sightlines, Liniar bi-folding windows offer large expanses of glass for maximum light even when closed.  Patented features include an innovative thermal lock, helping to keep homes comfortable all year round with U-values as low as 1.2W/m²K. You can also customise your bi-fold window with a wide choice of colours, including powder-coated or finishes.

Liniar bi-fold windows
Liniar bi-fold windows

Precision engineering

Engineered with precision and craftsmanship, these bi-fold windows glide effortlessly along their tracks, allowing for smooth opening and closing.

A popular choice for a kitchen, orangery or conservatory, a Liniar bi-fold window brings additional ventilation and adds the ‘wow’ factor to any home.

Customise your Bi-fold Window
Available Colours
9162D7A1-7B47-4581-9B0A-4AE2C604D808Exterior
9162D7A1-7B47-4581-9B0A-4AE2C604D808Interior
White (Gloss)
RAL 9910
Available in
S
SCULPTURED
chamfered
White
7016 Grey
Black Brown
White
Cream
Irish Oak
Golden Oak
Rosewood
7016 Grey
Black Brown
Chartwell Green
Zoom in
086893B1-1E55-41C0-BD9C-46BA6CDD2C43
Alumina BiFold Window Catalogue White Exterior

This product is available in more colours for bespoke orders. See the full colour range here.

Technical information

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619E3D06-F09C-40F6-B917-F7383D1418E5
Material
Aluminium
1B1D40E1-1C48-4A2C-928C-185D9C44145F
Styling
Sculptured
259BC305-9CAC-4A82-B307-5DEBB1470364
Frame Depth
70mm
Profile
Profile
Alumina
7A92A4EA-2AC1-46E5-A6FC-2D05048B5E4E
Glazing
28mm, 36mm or 40mm IGU
894B6FFF-425C-4A6B-8FD7-7B708DC6921B
Lowest U-Value
TBA
EAB63F1A-8E5C-4736-907B-69FB8B586F7C
Best Acoustic Rating
37 (-2;-5)
E2A03DE8-F5CC-4E82-8886-34B2E1D7B78B
Highest Energy Rating
A+
2A2D6E87-4676-4E05-AC96-8E42947F4F73
Patented Bubble Gasket
No
Recycled material
Contains Recycled Material
No
ED81E880-F76F-4CFA-AB10-4FC758ED9229
Fully Recyclable
Yes

BI-FOLD WINDOW 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

Accreditations
SBD

Secured By Design

BSI PAS24 kite mark

PAS24 Security

BSI ISO14001 Logo

ISO 14001

BSI EN 6375

BS EN 6375