Who makes the slimmest sliding doors?

Who makes the slimmest sliding doors? If you are in the market for one of the latest generation aluminium sliding patio doors, there has never been more choice.  Bigger glass, better views, light and smooth sliding even automatic opening and closing are just some of the features you will find in modern aluminium slimline sliding doors.

First of all, one of the many features found in the current generation of aluminium sliding patio doors is a choice of aesthetics.  For these products options such as standard or slim mullions and even the new breed of minimalist or ultra-thin slimline sliding doors.

Secondly, aluminium patio doors have many facets in their design, and some come more complex than a bifolding door.  For instance, their overall specification, fabrication, glazing and installation too.  Moreover, many sliding patio doors achieve panel sizes of up to 9m2 with some systems also exceeding this area by a long margin.  However, one consistent message with the latest breed of sliding doors is how slim you can have them.  This trend for ultra-thin doors is all to do with the sliding door interlock.

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Slimline doors and windows

What is a sliding door interlock?

The interlock is the central mullion where the front edge of one sliding panel interlocks or overlaps with the back edge of the other.  Additionally, the interlocking design must allow for rigidity as well as protection from wind loadings and deflection.  Furthermore, with many modern ultra-slim sliding systems, the interlock also acts as a door handle.

Consequently, whether you choose an inline, lift and slide, automatic or tilt and slide aluminium sliding door, all doors from two panel up to six or more have an interlock. With the interlocks also being the most prominent feature of a current sliding door, we can, therefore, help you navigate the many different doors on the market and help you find out who makes the slimmest sliding doors too.

Do remember that many of the sightlines you’ll see marketed, slim or otherwise relate to the interlock only.  We are frequently contacted by homeowners disappointed to find the outer frame and door rails and stiles not as slim as the interlock.

List of the slimmest sliding doors

Through extensive research, product knowledge and detailed study of the fabrication and technical manuals, we have compiled a list of the majority of sliding door systems sold in the UK today.  Included are all the top brands you may have heard of as well as many other products less well known.  As well as the standard mullion is an option for a slimline version.  As a result, you can see in one place, who makes the slimmest sliding doors.

Optional Slim Interlock
SL18 Hyline  Sliding Door18mm 
Sunvista Sliding Door19mm 
Air 20 SL Sliding Door20mm 
Sunflex SVG20 Slimline Door20mm
Edge 2.0 by ID Systems20mm
Fenster Fabrications Uni-Slide Door20mm 
Origin OS-20 Artisan 20mm 
PanoramaH! Sliding Door20mm 
Greenways Architectural Ultraline Sliding Door20mm 
Sightline Aluminium Glazing Systems20mm
Infiniglide 3 Sliding Door20mm 
AluK Infinium Sliding Door21mm 
Minimal Windows Sliding Glass Door21mm 
Maxlight Doors21mm
System 22 Fineline Aluminium Sliding Door22mm 
Infiniglide 6 Sliding Door24mm 
YES Glazing Vision Sliding Door 24mm
Alumen Cor-Vision Plus25mm 
Europa ESS47 Inline or Lift and Slide 25mm
Minimal Windows 4+ Sliding Glass Door26mm 
Origin OS-29 Sliding Door29mm
Sunflex SVG30 Sliding Door30mm
Schuco ASS70 PD Panorama Design Sliding Door30mm 
Sieger 30 Sliding Door30mm 
Metra NC-S 120 STH Slim Sliding Door30mm 
Exlabesa Xlaslide32mm
Solarlux Cero Sliding Door34mm 
Reynaers Concept Patio 68 (CP 68)34mm
Reynaers Hi-Finity Sliding Door35mm 
Technal Systems Lumeal Sliding Door38mm 
Artline by SAPA Sliding Door38mm26mm
Reynaers CP68 Sliding Door41.5mm 
Schuco ASE60 Sliding Door with slim interlock40mm 
Hueck Volato S Sliding Door40mm
Arkay Edgeglide/Cortizo 4200 Sliding Door42mm 
Dutemänn Glide-S47mm
Cortizo 4700 Sliding Door47mm
Sliders UK Ultimate Evoslide (rebranded Cortizo 4700)47mm
Air 500LS Sliding Door 48mm 
Air 600LS Sliding Door48mm 
Schuco ASS70.HI DE Sliding Door48mm 
AluK Infinium SC156 Sliding Door50mm 
Reynaers MasterPatio50mm
SAPA Confort C125 Sliding Door50mm 
Panoglide Sliding Door50mm 
Stellar Aluminium Lift and Slide Door50mm
Sunparadise ISO 41 Sliding Door51mm
SAPA Crown 98 Sliding Door51mm45mm
SAPA Crown 120mm Sliding Door51mm45mm
Deceuninck Decalu163 Slide73.3mm
Kawneer AA3572 Lift and Slide Doors74mm 
Origin OS-77 and OS-44 Inline Sliding Doors77mm44mm
Technal Tigal Pull and Slide 78mm outside
69mm inside
Senior Architectural Ali Slide Door79mm50mm
Smart Systems Visoglide Plus83mm35mm
Sunflex SVG83 Sliding Door83mm30mm
ID Systems Grand Slider II Sliding Door83mm 
Warmcore Inline Patio Sliding Door84.5mm 
AluK BSC94 Sliding Door85mm45mm
Schuco ASS48 Sliding Door85mm 
Sieger 85 Sliding Door85mm 
Comar 7P.i LS+88.9mm 51mm
SAPA C160S Lift Slide Door92mm 36mm
Alumil S-70094mm47mm
Dutemann Glide-S94mm47mm
Metal Technology System 25 HI/HI+ Sliding Door94mm 50mm
Sunparadise Thermoslide 80 Sliding Door96mm 
Senior Architectural Systems PURe® SLIDE and SL.96.5mm50mm
Reynaers CP130 Sliding Door98mm69mm
Kloeber Kustomslide Mono Sliding Door98mm 69mm
Reynaers CP155 Sliding Door102mm76mm
Hueck Volato M Sliding Door103mm 
Stayfix S3 Lift & Slide Door104mm52mm
Exlabesa KLS Sliding Door105mm 
Schuco ASS 70 HI108mm48mm
Alutech Systems SL160115mm 
Comar 7P.1 Sliding Door123mm 
Smart Systems Ultraglide Sliding Door 125mm 
SAPA Confort C160 Sliding Door126mm 
Metal Technology 5-20 Tilt & Slide Door149mm 

Importantly the mullion sightlines exclude four panel patio doors where the two central doors meet together, having a thicker sightline) and slide in opposite directions.

If you are wondering why some well-known big retail brands are missing, this is because many use the above systems or variations of them. This includes well-known retail companies such as:

  • Express Bifolding Doors using the Italian Metra NC-S 120 STH Slim Sliding Door as their XP Slide Panoramic as well as the Reynaers CP130 for the XP Glide-R
  • Bifold Direct
  • Everest Home Improvements
  • Anglian Home Improvements
  • Kloeber
  • Duration Windows

Some choose to re-engineer, rebrand, or implement modifications and improvements. We have included some of these existing systems in our table.  Several of the above brands are based on the Cortizo Cor-Vision and Cor-Vision Plus, another popular slimline sliding door.

Are the slimmest sliding doors better than the regular sliding door?

Not at all. The construction of the ultra-slim sliding doors is quite different from the systems on our listing with standard-size interlocks.  In most cases, the ultra-slim sliding doors are inline versions only. Regular size doors offer inline, lift and slide or tilt and slide opening options.  Glass choices tend to be greater with the thicker set doors as well as having more handle style options.

Slimline sliding doors come with caveats and restrictions.

Despite the trend towards thinner sliding doors, it remains their overall size, especially the height, that determines whether the slimline section is available.  For instance, many of the sliding doors at the top of our chart with interlocks less than 35mm rely on the glass providing the structural integrity, not the aluminium sections, which are secondary.

Subject to the size, exposure and location, a professional installer will carry out wind load and deflection calculations to determine whether the slim interlock can be used or whether it needs additional reinforcement.  The other area that differs from all types of other doors is the factors that affect the installation of sliding doors.  To fit a large sliding door can involve specialist skills, equipment and extra costs. 

What to consider when buying slimline patio doors.

The interlock sightline is just one consideration when purchasing a new sliding door. Here is what else is more important.

  • A slimmer door may not be the best for your property. Talk to a professional installer for the best advice.
  • Not all systems offer this facility if you are looking for doors that slide into a wall or open corner doors.
  • The overall product appearance should also be considered. Look at the perimeter frame sightlines too.
  • Always view a full-size sample of the product in a showroom or at an actual installation.
  • Examine the quality of the sliding action and the door handles.
  • Ensure you are happy and comfortable purchasing from the company in question.

Please contact us if you would like more information about the sliding door systems mentioned or have any questions about who makes the slimmest sliding doors.

Product list updates

This article was written in 2017 and is regularly updated as products change, and new ones come on the market.  The last update is in March 2023.