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Barrier-free thresholds with Schüco windows, doors and sliding systems

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Thanks to its level threshold, the Schüco LivIngSlide lift-and-slide system offers barrier-free access for all residents.

photo Schüco

Thanks to its level threshold, the Schüco LivIngSlide lift-and-slide system offers barrier-free access for all residents.


The level threshold in the Schüco AWS 75.SI+ window door system provides a trip-free transition.

photo Schüco

The level threshold in the Schüco AWS 75.SI+ window door system provides a trip-free transition.

The level threshold in the Schüco LivIng window system creates a smooth transition to the balcony or patio.

photo Schüco

The level threshold in the Schüco LivIng window system creates a smooth transition to the balcony or patio.

The level threshold in the Schüco AD UP door system provides ease of access while also meeting the standard requirements for entrance doors, such as watertightness and air permeability, to a very high standard.

photo Schüco

The level threshold in the Schüco AD UP door system provides ease of access while also meeting the standard requirements for entrance doors, such as watertightness and air permeability, to a very high standard.

The level threshold of the Schüco LivIng door system offers barrier-free access and high weathertightness.

photo Schüco

The level threshold of the Schüco LivIng door system offers barrier-free access and high weathertightness.

The other standard requirements like effective thermal insulation and burglar resistance to RC 2 can be combined with the level threshold in the Schüco ASE 80.HI sliding system.

photo Schüco

The other standard requirements like effective thermal insulation and burglar resistance to RC 2 can be combined with the level threshold in the Schüco ASE 80.HI sliding system.

Planning, designing and equipping buildings to provide ease of access has increased in importance in order to create living spaces in which people feel comfortable. 


The focus is not just on residents with restricted mobility or cognitive impairments, but people of all ages at any stage in their lives. As moving, functional construction units, windows and doors are of particular importance, as it should be possible for all residents to use them without constraints. The barrier-free, level thresholds in Schüco systems not only offer all-round comfort and convenience, they also enable everyone to access buildings independently.

The requirements for barrier-free thresholds in Germany are stipulated by DIN 18040. The aim of this standard is to ensure ease of access in all buildings, so that they can be accessed by people with and without disabilities and without obstructions or external aids. To this end, the standard is divided into DIN 18040-1, which stipulates the requirements for public buildings, and DIN 18040-2, which applies to the configuration of residential buildings and their external areas. This standard contains specific technical requirements which must be met by windows, doors and sliding systems in residential buildings in order to ensure ease of access. A key part of this standard is having thresholds that are level with the ground. Schüco aluminium and PVC-U system solutions can be used to create transitions without thresholds throughout the building, for a barrier-free, comfortable home for all ages.

Window doors


Access to balconies or patios can quickly become trip hazards and even a real obstruction for wheelchair users. In order to avoid this, DIN 18040 has stipulated the technical requirements for a window door to provide comfortable, barrier-free access. Thresholds are not permitted unless it is technically unfeasible to use a level threshold. In this case, the threshold must not exceed 20 mm in height. 

Schüco AWS (Aluminium Window System) barrier-free balcony and patio doors were developed to meet every requirement in terms of comfort and design. The AWS barrier-free window door can be fitted with a level threshold which enables a trip-free transition between indoors and outdoors. The threshold achieves Class 6, the highest classification stipulated by ift Rosenheim's guideline „Determining and classifying the rollover capacity of thresholds (BA-01/1)”. 

Wheelchair users, small children and people with walking aids can cross the threshold safely without any issues. A threshold gasket with delayed hydraulic lowering ensures an effortless closing process, while the Schüco fittings in the vent frame enable easy, manual operation (Class 2 operating forces). The following systems can be designed with level thresholds: aluminium window and window door constructions Schüco AWS 70.HI, AWS 75.SI+ and AWS 90 SI+ (70, 75 and 90 mm basic depth) as well as PVC-U window doors from the Schüco LivIng and Schüco LivIng Alu Inside series.

Entrance doors


To enable all residents to access buildings easily and independently, entrance doors in particular need to be designed to be barrier-free. DIN 18040 stipulates that thresholds are not permitted for entrance doors either. 

The Schüco AD UP (Aluminium Door Universal Platform) door system meets the requirements of DIN 18040 for threshold-free access in residential and commercial buildings. The cross-product construction principle of the barrier-free level threshold can facilitate unrestricted access to buildings.Ift guideline „Determining and classifying the rollover capacity of thresholds” (BA-01/1) is also met in full, achieving the highest possible classification (class 6). Furthermore, all of the usual requirements for a door, such as the watertightness and air permeability, are met to a high standard. The door system with the barrier-free, level threshold also offers burglar resistance up to RC2. An additional, automatic side-hung door drive offsets the operating forces to facilitate ease of access without having to operate the door manually.

Alongside the aluminium door system, Schüco PVC-U systems also feature an impressive barrier-free level threshold solution, which can be used in all single-leaf, inward-opening entrance doors in the Schüco LivIng system. Specially developed wind-stops for level-threshold door units and an automatic threshold gasket ensure smooth functioning, durability and optimum weathertightness for the doors.

Sliding systems


In addition to windows and doors, sliding systems also need to meet specific requirements to make them easy for all residents to use, regardless of whether or not they have mobility issues. Level thresholds are therefore a necessity here too. The Schüco ASE 60 (Aluminium Sliding Element, 60 mm basic depth) and ASE 80.HI (Aluminium Sliding Element, High Insulation, 80 mm basic depth) aluminium lift-and-slide systems as well as the Schüco LivIngSlide PVC-U lift-and-slide system all meet these requirements. 

The barrier-free, level threshold in particular provides additional convenience, for an even transition between inside and outside. Other standard requirements like effective thermal insulation and burglar resistance to RC 2 can easily be combined with the level threshold for the aluminium and PVC-U lift-and-slide systems. 

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