Lift and slide doors

A well-designed sliding patio door can be a thing of beauty. The proportions are just right, and the frame doesn’t dominate. The panes glide smoothly along their tracks, but when closed, the doors are reassuringly secure. The wind can howl but there’s no trace of a draught and you can stand indoors on a frosty morning without feeling the chill.

 The streamlined style hides engineering that makes these sliding doors safe, easy to open and easy to secure. It’s packed with technology that insulates a home. Its weatherseals are effective and long-lasting.

When you’re choosing to have feature glazing – that gorgeous wall of glass – your view will be interrupted by the vertical frame that marks the edge of each pane. If you reduce the number of panes, your view is better. One of the benefits of a sliding door is that each pane can be larger than on a bifolding door.  It’s simply a matter of weight and glass can be surprisingly heavy.

Hardware is a crucial part of any sliding door, and Crystal’s lift and slide doors boast some of the very best with four locking points on the gearing. ‘Lift’ simply means that there’s a built-in system designed to take some of the weight when you’re opening the panes. It makes them glide more freely along their tracks.  With its incredibly slim profiles and interlock options as low as 50mm, it makes the most of the glass area, delivering the coveted light and airy feel and clean aesthetics.

Features and benefits

  • 2, 3 or 4-pane layout
  • Interlock options 96mm, 68mm or 50mm
  • Glazing options 28mm, 36mm or 44mm
  • Wide choice of handle colours
  • Up to Door Set Energy Rating C
  • U-values as low as 1.4W/m2K
  • 4-point locking and PAS24 standards
  • Weather performance to BS6375-1
  • Meets Building Regs without foams or polyamides
  • Slim sightlines
  • Colour coordinated handles
  • 10-year mechanical performance guarantee
  • 25-year surface paint finish guarantee
  • 10-year mechanical guarantee on hardware


All aluminium sections are finished with a tough, durable polyester powder coat, certified to the Qualicoat standard, which surpasses European requirements. The finishes need next to no maintenance – just a quick wipe down to remove surface dirt. For more challenging environments, we can also supply special marine-grade finishes.  There’s a wide choice of stocked colours chosen to enhance all types of building materials and if you want to choose something different, it’s possible to have your windows or doors finished in any RAL colour.


Crystal Direct doors boast
huge benefits

  • Warranty

    Patios come with a 10 year manufacturer's warranty

  • Energy efficiency

    Market leading thermal performance

  • Security

    4 point locking and PAS24 standards

  • Quality

    Manufactured to the highest quality standards, fully accredited UKCA Marked

  • Recycling

    End of life products are given a new lease of life via recycling

Crystal directAccreditations

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a list of Crystal approved and Platinum partner
supplier locations
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