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Contemporary architecture leaves no room for randomness. In a world where design lines must go hand in hand with functionality, every detail gains strategic importance. One such detail, once considered marginal but now a hallmark of quality and comfort, is the threshold—or more precisely, its absence.
Threshold-free solutions have firmly established themselves in recent architectural trends. They fit seamlessly into minimalist aesthetics and meet the expectations of users seeking barrier-free spaces. The absence of a threshold is not just an aesthetic choice — it reflects a design philosophy where the smooth transition between zones — interior and exterior — becomes a symbol of modern luxury. For architects, it offers the opportunity to create visual and compositional continuity. For users, it ensures safe movement for children, the elderly, and people with disabilities, as well as everyday comfort that becomes a natural standard.
AS 100 Pivot – entrance with drop-down threshold
With the AS 100 Pivot system, Aluron proves that elegance can go hand in hand with absolute functionality. It is a front door solution that redefines the entrance zone — not merely as a utilitarian element, but as a conscious extension of the building’s form. The drop-down threshold, concealed within the door leaf, activates automatically upon closing. It protects the interior from cold, moisture, and noise — without the need for any visible threshold elements. Pivot doors are ideal wherever architecture is meant to tell a story. Perfect for modern villas, residences, and other spaces with a high aesthetic standard.
AS 178HS Modern and ULTRA version – integrated linear gap detailing
The AS 178HS Modern system meets the demands of architectural projects where light, space, and visual continuity are key design principles. These ultra-modern lift-and-slide doors feature the narrowest central mullion among HST systems — just 25 mm — delivering an effect of near-complete transparency. These are more than just doors — they are a frame for the view. Here too, the boundary at floor level disappears thanks to the use of a slot-type detail or the AS LD linear drainage system.
The slot-type solution is a truly 100% threshold-free variant. The sliding door’s running mechanism and fixed part are fully integrated into the floor. Only a discreet 9 mm-wide gap remains visible, allowing for smooth sash movement. It’s the perfect choice for open-plan homes, panoramic terraces, or any project where maximum interior daylight and uncompromised functionality are essential.
AS LD linear drainage – hidden technology, visible quality
In both of the systems described above — as well as in AS 178HS PRO SLIM, AS 75, and AS 100 doors — a threshold-free installation can be achieved using the AS LD linear drainage system.. The drainage channel is installed at floor level. Available with several grille variants, the AS LD system enables water drainage either downward or sideways. Effective rainwater management is especially important in terrace constructions, as their large dimensions expose them to higher levels of precipitation. Thus, the AS LD system not only enables the implementation of flush threshold designs, but also ensures watertightness, safety, and visual clarity.
Comfort and design in the service of modern architecture
In all of the presented solutions, the key lies in the invisible technology — it functions precisely where it should, without drawing visual attention. This is architecture’s response to the needs of the 21st century: fewer barriers, more light, more space, more freedom. That’s why threshold-free solutions are a design detail worth planning already at the architectural concept stage.
