KAT Super-Slim sliding patio doors

What do you want your vision to be?


Our vision is yours. Because our guess is that you’d prefer a vision of your garden or the great outdoors in preference to a less than great obstructive door or window!

At KAT, we specialise in installing frameless doors and windows in homes and commercial buildings across the UK.

Benefits you WON’T see!
It could be said that, in one way, you won’t see the benefits of our superb range of KAT Super-Slim Aluminium Patio frameless doors! Because our vision from day one was to take glazing to a whole new level by simply making it invisible.

And, to achieve just that, our single-minded commitment to product and system development ensure that we are always at the very forefront of glazing technologies.

Your vision realised… beautifully
Whatever your vision might be, our team can bring it to life beautifully, smoothly and seamlessly, from planning to completion. And, with multiple configurations available, your imagination really is the limit to make your dreams reality.

Key features of KAT Super-Slim sliding patio doors

  • Utilising the natural strength of aluminium to create slim thermally broken profiles
  • Low maintenance, hard wearing powder coated aluminium
  • 20mm sight lines
  • Multi point locking system
  • U-values from 1.3W/M2k
  • Moving corner posts/options
  • Automated opening option
  • Flush tracks and slot drainage available
  • A variety of glazing options including solar control and easy clean
  • Up to 4 tracks available providing 80% opening

KAT Super-Slim Aluminium Patio doors incorporate frameless design with 20mm sightlines allowing for as much
daylight as possible. Recessed tracks allow for as little interrupted views as possible.
Highly efficient double glazed units with thermally broken aluminium allow for low thermal U-values.
Aluminium can be painted to any RAL, Syntha Pulvin or BS colour.
While all calculations such as wind-loading, U-values, size and weight limitations are calculated on a project basis these are
the average values for an average door.
1.3W/m2K (Using a 1.1W/m2K glass unit)
1.1W/m 2K (Using a 0.7W/m2K glass unit)
Wind Resistance
EN 12210:2000 Class C5
Water Tightness
EN 12208:2000 Class 7A
Air Permeability
EN 12207:2000 Class 4
Document Q
Document L
Maximum Dimension
Each panel can go to 3000mm high by 3000mm wide, please enquire if you would like to go
outside these sizes.
Maximum Weights
500kg - please enquire if you would like to go outside this weight.
Frame Depth 44mm
Glazing Thickness
28-32mm double glazed units - triple glazing is available on request.



At KAT, we specialise in installing frameless doors and windows in residential properties and commercial buildings all across the UK. These doors feature bonded glass and cater for really substantial openings where the external view is optimum.

Material Information


Aluminium has become the preferred material for manufacturing windows and doors from and that is why it is widely specified by Architects for most new build and refurbishment projects.
Aluminium doors require very little maintenance, just an occasional wipe with a damp soapy cloth 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 uPVC and is not likely to warp or rot. We offer a 10 year warranty on standard paint and a 25 year warranty on Marine Grade paint.




We believe in keeping things simple. Our super-slim doors are supplied with a very discreet handle with an up down lever and cylinder lock, that sit close to the door edge. In order to maximise the glass area we have kept our aluminium edge profiles as slim as possible.


Safety & Security


Our KAT super-slim range of sliding patio doors are always supplied with safety glass as standard. We are constantly improving the locking options available and we are currently conducting indicative testing prior to full testing at BSI.

Safety & Security

Colour Options


KAT Aluminium French Doors are available in a any RAL colour or textured finish.

We stock the following finishes:

Traffic White Gloss
Anthracite Grey Matt

Dual Colours:
Anthracite Grey Matt outside / Traffic White Gloss inside

Call into our showroom in either Newhaven or Macclesfield and we will can show you a colour chart demonstrating each of the RAL colours