Alumina Bi-Fold Doors Somerset

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.

Available in a choice of three powder-coated colours as standard, Alumina is also available with a beautiful factory-fitted foiled finish. Colours and finishes can be different inside and out, so you can choose the perfect match for both the exterior and interior of your home.


Liniar’s cutting-edge Alumina doors can be glazed using matching uPVC beads for the most stunning finish. Available in white and sculptured in form the PVCu bead is painted to match the white RAL finish of Alumina doors using only the latest technology. Alumina’s uPVC beading comes with the same 10-year warranty to cover wearing and discolouration. Discover all the benefits of using uPVC beads versus conventional aluminium shuffle beads on our Why Alumina page.

Alumina doors are supplied as standard in plain white, black or grey (7016) powder coated finishes. Doors are also available with beautiful matching coloured foils. Liniar’s high quality foil range is precision factory fitted and fully guaranteed for 10 years against discolouration, as well as ensuring Alumina bi-folds match perfectly with Liniar PVCu windows, French doors, sliding patio doors, conservatory roofs, soffits and fascias, for a seamless, cost effective and attractive installation.

The colours shown below are representative only; please ask to see an Alumina foil swatch booklet for the most accurate colour choice and match.

Bi-Folding Doors Bridgewater, Somerset

Folding back to only a few inches, bi-fold doors allow you to make the most of your available space. Installed with finger-safe gaskets which prevent the trapping of fingers, your new bi-fold doors from Lancelot will be the envy of all your friends and family.

Alumina Security Features

Before the Alumina aluminium door system was launched, and again after its launch, the system underwent exhaustive testing, both internally and by an independent third party. The full sized doors easily surpassed the highest marks for security, achieving PAS24, Part Q and Secured by Design accreditations.

All types of Alumina doors include Liniar’s patented combined lock and thermal insert, following the same principles as the Queen’s Award winning ModLok™ bi-folding door. This unique modular lock blends the ultimate security specification with a high strength engineering polymer lock body, the lock itself acting as a thermal break and helping achieve U-values as low as 1.3 W/m²K.

Designed to keep families safe whilst at the same time offering supreme energy efficiency, Alumina doors also include bespoke hardware to help protect against break-ins, including:

  • Opposing hooks
  • Shootbolts that secure firmly into the track
  • Anti-lift features
  • Anti-bump cylinders

Alumina’s bi-directional locking points add further security. Slimline hinges with concealed fixings not only look beautiful, but ensure the doors can’t be unscrewed from the outside.

These innovative features make for an entry solution to commercial properties, homes and gardens which offers the ultimate in security.

The jewel in the crown of the Alumina range – our bi-folding door system enables a full wall of your home or property to be opened up to the outside.

Ideal for commercial or heavy duty applications, Alumina sliding bi-fold doors offer added strength and security.

Spanning up to 7 panes wide, Alumina bi-folding doors can be supplied with almost any powder coated RAL finish, or foiled with a realistic factory fitted woodgrain foil.

A true aluminium bi-fold system, Alumina doors are available with 28mm double or 36/40mm triple glazing, offering U-values as low as 1.3W/m²K.

Flexible Configuration

 Threshold options

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.

A Striking Addition

Bi-Fold Doors Ashcott, Somerset

An increasingly popular option for homes in the South West, make a lifestyle choice by installing a beautiful bi-fold door that will enhance panoramic views and increase natural light.

Complement your home with a bi-folding door from Lancelot Windows & Conservatories LtdAlumina_02 Alumina_05 Alumina_11 Alumina_12 Alumina_18.

Your Design

The bi-fold door gives you the option of choosing your own unique colour. Our bi-fold doors come in a wide range of designs, colours and finishes so whatever your preference, you are sure to find a style that best suits you and your property.

Customise your bi-folding door with the option of folding from the left or the right. Slim sightlines and concealed hardware .