UPVC Bi-Folding Doors

Imagine being able to open up an entire wall of your room, creating space and letting fresh air and natural daylight flood into your home.

Whether you have a bedroom with Juliette balcony, a dining kitchen, a conservatory or an orangery, bi-folding doors can provide a stunning alternative to patio or French doors. Liniar’s bi-folding doors were the first fully bespoke PVCu bi-folds to be designed, engineered and made in the UK – and we believe they are still the best.

Available in a wide choice of opening configurations and colours, your Liniar bi-fold has ultra-slim sightlines, providing your room with a clean, modern appearance Safety features include the innovative low threshold option for family friendly and wheelchair use, meeting Part M building regulations.

What’s more, the Liniar bi-fold offers high energy efficiency, combined with the best security features on the market – bringing you a modern space-saving solution for your home that will definitely give it the ‘wow’ factor. 

Helps to keep the heat in

One of the most effective ways you can save energy within your home is through installing energy efficient windows, doors and roofs.
Liniar frames outperform most of the other leading brands in the UK when it comes to thermal efficiency – mainly due to our innovative PVCu multi-chambered profile design.
The thermal efficiency of a door is measured in U-values, which demonstrate how effective the door is at preventing the transfer of heat into and out of a building.
The lower the U-value, the higher the doors’ effectiveness at keeping the heat inside your home when it’s cold outside.

Furthermore, Liniar’s patented bubble gasket isco-extruded as part of the manufacturing process – meaning seals aren’t fitted separately and therefore unlikely to leak.A continuous seal all the way around the frame eliminates draughts and provides resistance to water.