UPVC or Aluminium?

Bi Fold Doors - A grand design


Bi-folding doors are becoming more popular than ever before, thanks in part to their regular appearance in television home make-over and lifestyle programmes.


Timber or aluminium are often perceived as the only materials that can be used for bi-folding doors, but doors made from lead-free PVCu can actually offer many more benefits:

• Smooth operation

• Higher thermal efficiency 

• Low maintenance

• Perfectly matches your other doors and windows

• Cheaper than aluminium

With Liniar’s foiled woodgrain-effect options, your bi-folding doors can have the appearance of timber, without the need to repaint them each year.

If you choose our flat grey frames, your bi-folding doors will rival the most contemporary aluminium range on the market, keeping your home much warmer at a more cost effective price.

Liniar’s innovative and patented ModLok™ bi-folding door offers even greater strength and rigidity, combining all of the structural benefits of aluminium with the energy efficiency of PVCu. Discover why more and more people are choosing bi-folding doors to add an extra dimension to their homes.


…the unique aluminium bi-folding door system with beautifully sculptured frames and optional foiled finishes, spanning apertures up to 6.5m wide and sashes 2.4m high and able to span up to 1.2 meters wide per sash.

 •Thermally efficient – U-values as low as 1.2W/m²K

 • Choice of thresholds available - including P Part M      compliant options

  Optional foiling to exterior, interior or both


Aluminiums strength and size makes it ideal for a wide range of projects, from extensions and self builds to large scale commercial use

Aluminium doors are supplied as standard in plain white, black or grey (7016 Anthracite) powder coated finishes. You can also order your doors in your own personal powder coat colour option, simply by quoting a RAL number.


Doors are also available with beautiful matching coloured foils, which can be applied to the interior, exterior or both.


Our high quality foil range is precision factory fitted and fully guaranteed for 10 years.

Use our handy comparison table to choose the most suitable bi-fold system for your intended application:

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