Why Choose Alumina


Excellent energy efficiency, a beautiful warm touch foil finish or RAL coating and stunning, vast expanses of glass are only a few of the reasons why customers choose Alumina bi-folding doors by Liniar.

From character properties to modern new builds, the Alumina bi-folding door is an ideal solution. With hundreds of wood grain and plain colour foil finishes available and over 150 RAL colours, Alumina bi-folding doors match perfectly with Liniar uPVC windows and doors. For homes and businesses that need traditional looking timber appearances, the realistic wood grain foil finishes are the perfect solution. A low maintenance alternative to timber, Alumina bi-folding doors are easy to clean and don’t require annual care or staining.

  • Foiled Alumina bi-fold doors come with matching uPVC beads
  • Range of threshold options including Part M low threshold, giving customers a range of threshold options
  • Flexible uPVC beading for easy glazing and less risk of damage during the glazing process
  • Triple glazing ready and U-values as low as 1.3W/m2K
  • Compatible with the Liniar uPVC frame extensions
  • Foiled Alumina bi-fold doors offer a fully matching, sculptured appearance when paired with the Liniar window suite
  • Singular Liniar 10 year guarantee covering the entire range
  • Concealed drainage eliminates the need for face drain caps
  • Available fully built or in kit format, making projects with limited access easier
  • Captive top track makes Alumina easier to install and prevents mishandling
  • Full installation support from Liniar, including installation guides and videos
  • Alumina’s revolutionary uPVC beading can be painted to match the RAL white finish of the doors
  • PVCu beads mean no risk of damaging painted surfaces during glazing – which commonly happens with aluminium beads – simply bow and arc the beads into place
  • No visible wedge gaskets – the uPVC bead utilises Liniar’s patented co-extruded gasket technology
  • Glaze doors at over 2x the speed with no extra gaskets to insert and a simple tap with a nylon hammer
  • Alumina bi-fold doors offer a perfect match to an existing Liniar window suite, thanks to 150 RAL colour combinations and hundreds of solid and woodgrain foil finishes available inside and out
  • The aluminium exoskeleton provides the appearance of an aluminium door with the thermal and energy efficiency of a uPVC door
  • Each pane of an Alumina bi-folding door is up to 1200mm wide and 2500mm tall, offering configurations of up to seven panes wide – wider than possible with composite or uPVC options
  • Numerous opening configurations allow Alumina to be adapted to suit any property
  • U-values as low as 1.3W/m2K and triple glazing ready
  • Unlike most bi-folding doors available on the market, Alumina offers five, severe weather-rated threshold options – including a Part M compliant threshold, perfect for commercial properties and those needing wheelchair access
  • Alumina’s industrial, warm touch finish provides a sleek, low maintenance entry solution for homes and businesses
  • Achieve a seamless finish with Alumina’s colour-matched PVCu beads