Alumina Bifolds

Ideal for residential or commercial use the Alumina bi-fold doors offer added strength and security. Spanning up to 7 panes wide, and with sash sizes from 0.6m to 1.2m and up to 2.5m high, Alumina bi-folding doors are ideal for any project. Built with Liniar’s ModLok™ technology and thermal patented polyamide lock, Alumina bi-folding doors can achieve a U-value as low as 1.3W/m²K when using the correct glazing option. Alumina bi-folds can also be fully foiled to perfectly match the Liniar range of windows and doors, or powder coated in any RAL colour of your choice. Even better – by matching windows and doors this offers a single point of guarantee for the homeowner.


All Alumina doors are available with a choice of five threshold options – including the rebated aluminium frame to the 23.5m high low threshold and the Part M compliant threshold with tray. A full-size Alumina door has also been weather tested with a thermally broken threshold, achieving incredible results – beating the minimum requirements for both air and water tightness by more than double the most severe pressures within BS 6375.


Alumina is brought to you by the same team of experts as the innovative, energy efficient, PVCu Liniar window system. The Liniar design team has now developed three bi-folding door systems from scratch, giving consumers the ultimate in choice and flexibility when it comes to selecting the best bi-fold to fabricate, to install and to use every day.


Suitable for high traffic entrances or commercial applications, the Alumina flush door is built with Liniars ModLok™ technology.