[rev_slider alias=”installer_new”]

Perfect for installers

The launch of Alumina allows installers to offer a single source of supply and warranty
for a full house of fenestration products

Alumina by Liniar is a heavy-duty bi-folding door that’s strong, durable and resilient – as well as the most attractive on the market. Fully matching to Liniar’s PVCu windows, doors and conservatories, Alumina is the only aluminium bi-fold to enable you to offer customers a full product range with a single point of guarantee for their installation.

All Liniar bi-fold doors are bottom rolling, not top hung, so no extra forces are acting upon existing lintels – removing the need to add extra strengthening.

Alumina’s uniquely foiled aluminium bi-fold doors are supplied with matching PVCu beads, enabling faster glazing onsite and offer higher thermal efficiency for customers.

The optional low threshold and tray for Part M compliant threshold both require no trench excavation – making installation easier and faster.

If you don’t already offer aluminium bi-fold doors, Alumina will enable you to open up new markets in self-build or commercial projects where size is required but thermal efficiency is also key.

How to install an Alumina bi-fold door

This video is to help installers fit an Alumina by Liniar bi-folding door set.

It will take you through each step of the process to ensure your doors are fitted properly and to Liniar’s standards.

This video should be used in conjunction with the full Alumina by Liniar Bi-fold Doors installation guide to ensure a perfect fit and avoid any future remedials.

Music credit: bensound.com

To order an Alumina door, please complete a survey form and email it to alumina@liniar.co.uk.



Unique design

Recognising the need for a pure aluminium bi-fold that fully matched with Liniar uPVC windows – the Liniar design team designed one!

Foiled exterior

For a beautiful colour match to uPVC windows and doors, Alumina bi-folds can be foiled with any woodgrain or coloured finish.

‘True’ U-values

Alumina offers ‘true’ U-values as low as 1.2W/m²K thanks to its innovative thermal lock, with 28mm double glazed and 36mm or 40mm triple glazed units available.

All in the detail

The attention to detail is what makes an Alumina bi-folding door ‘best in class’, with innovative features including folding keys, ergonomic handles, hidden fixings for hinges and discreet magnets.