Aluminium Sliding Doors

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Quality KAT aluminium sliding patio doors designed in the UK


Our aluminium sliding patio door system is perfect for smaller openings up to 6 metres wide.  This patio door features slim sightlines and is very secure. When coupled with low emissivity glazing, these thermally enhanced doors achieve very acceptable U values.  These inline sliders are perfect for applications where it is desirable not to open in or out of a room and they offer a far larger glass area than a set of French double doors.


Key features of KAT Aluminium Inline Sliding Patio Doors

  • Slim aluminium sections means more glass and more light
  • Option of 2, 3, and 4 panel openings
  • Available in Anthracite Grey, Traffic White or Jet Black from stock
  • Rigid aluminium sections allow for more glass and therefore more light in your home
  • Twin Track or Triple Track
  • 83mm interlock sightline
  • Quick glaze bead for a smoother installation


  • P handle in Polished Chrome, Black, Grey, White or Polished Gold
  • Available in dual colours
  • Upgrade to PAS 24:2016 available
  • 35mm slim interlock sightline
  • Trickle Vents

General Description
Elegant and efficient in line aluminium sliding patio doors system with an 83mm interlock sightline, available as a twin or triple track.
Max sash width dependant on height and weight
Max sash height 2500mm - 2423mm to meet PAS 24 security
Maximum sash weight 250kgs
Frame depth 100mm
Outerframe sightline 177mm
35mm interlock sightline is available (Not available with Quick Glaze Bead)
2, 3 or 4 panes
Maximum 250kg panel weight for inline sliders
38mm double glazing
U value W/m2K 1.5 with 1.0 Centre Pane
Fitted with multi-point locking to lead door.
Upgrade to PAS 24:2016 available
P Handle available in a choice of five finishes:
Polished Chrome
Polished Gold

Bar handles are available on request in a Stainless Steel finish
From stock, we supply:
Single colour: Anthracite Grey, Traffic White or Jet Black

A wide range of RAL colours including a dual colour option is available on a slightly longer lead time.



It’s not the door you look at but the view through the glass, to the world outside.

Our aluminium sliding patio doors allow so much light into your home because the sashes are so wide that there are few vertical panels. Incorporate a KAT patio door into your build and add that touch of contemporary design elegance to your project.

You can choose from a wide range of RAL colours for your aluminium sliding doors and if you prefer, you can choose one colour on the outside, with a different colour on the inside. Sliding doors sashes can be made in sizes which are wider and taller than a bifolding door, as the sashes glide along their own track, rather than opening outwards into your garden.

KAT Aluminium Sliding Doors feature a slim 83mm interlock sightline and a contemporary P shaped door handle, available in a choice of five finishes. If you prefer, we can fit a pair of bar handles to your sliding doors on request.


Material Information


Aluminium offers the widest possible choice of colour options.

Aluminium sliding doors require very little maintenance, just a wipe with a damp cloth when needed and a regular check to ensure the track is kept free from grit and small stones to ensure the doors continue to run smoothly. Aluminium is more resistant to the elements than PVCu and is not likely to warp or rot.

We offer a 10 year warranty on standard paint or 20 years warranty on Marine Grade paint.




As standard, we fit a P handle, as pictured, both inside and outside. You can choose from five finishes: Polished Chrome, Black, Grey, White or Polished Gold.

If you prefer, we can fit a pair of bar handles to your aluminium sliding door in a Stainless Steel finish. Please visit our gallery to see a picture of our bar handles.



Safety & Security


Our aluminium in-line sliding patio doors are designed to discourage even the most determined intruder, thanks to our high security locking systems. 

All KAT doors are fitted with a pair of locking handles.

An upgrade to PAS 24:2016 is available on request.


Safety & Security

Colour Options


A little time and care with your choice of colour is advised and your selection should be influenced by your style of property, surrounding architecture or your other windows and doors.

From stock, we supply:
Single colour: Anthracite Grey in a matt finish and White in a high gloss finish

You can choose from a wide range of RAL Colours, including having a different colour on the inside and outside.

Just let us know your sizes and how you would like the doors to open and we can make your Sliding Patio Door to your bespoke dimensions.


Questions? us today!

If you wish to find your KAT design partner, have any questions or would like to discuss our premium range of products then please contact us.