Opening types: top-hung, tilt-and-turn, sliding

Top-hung windows are best suited where comfortable and safe ventilation is paramount without the sash needing to be opened wide inwards. This option is practical, for example, when there is a worktop, built-in units or an area beneath the window that is used intensively every day. Tilt-and-turn windows offer greater flexibility, as they allow both tilting and full opening. They are therefore often chosen for bedrooms, studies and living rooms. In Aluprof’s range, the MB‑86N window are a good point of reference here; they can be adapted to various functional and aesthetic requirements, including the use of concealed fittings.

For the largest glazed areas, sliding doors often prove more suitable than traditional inwards-opening sashes. The reason is simple: a sliding sash does not take up space in the room and does not restrict the arrangement of furniture. In homes where the living room opens onto a terrace or garden, this is a major advantage. In the Aluprof range, this category is represented by, amongst others, the MB‑82HS doors and MB‑SKYLINE TYPE S. The former allow for the creation of large glazed areas with convenient access to the outside, whilst the latter emphasise a minimalist look and very subtle frame lines, with a concealed slotted threshold ensuring maximum comfort of use.

Before choosing how to open windows or doors, it is worth asking yourself a few simple questions:

• will the window be opened frequently, or only from time to time,
• is there enough space in the room for the sash to open fully,
• is convenient ventilation more important, or a wide opening for access,
• is the main purpose of the large glazed area to let light into the interior, or also to facilitate access to the terrace or garden.

It is precisely these practical considerations that most often determine whether the chosen joinery will remain convenient even after several years of use.

Impact on airtightness and ergonomics

The opening mechanism also affects airtightness. With large sashes, it is crucial that the profile and fittings maintain stable operation and adequate pressure. This is precisely why, with larger sizes, it is worth paying attention not only to the type of opening mechanism itself, but also to the quality of the construction. The ergonomics of aluminium windows, on the other hand, is an aspect that is most easily felt in everyday life. A large casement sash may restrict furniture placement or make it difficult to use the space immediately next to the window. A sliding design eliminates this problem, which is why it is often simply more convenient for wide patio glazing. A low threshold is also very important, as it makes it easier to move between the interior and the terrace. With large glazed areas, it is precisely such details that often determine whether the windows are genuinely comfortable, rather than merely visually striking.

Integration with roller shutters and automation

When planning window installation, it is worth considering external shading and control systems right from the start. It is not just about convenience, but also about sun protection, greater privacy and a more stable indoor temperature. Aluprof offers external roller blinds, screens and facade blinds, which can be integrated with windows and doors into a single, cohesive system. These shading solutions can be operated manually or electrically, individually, in groups or centrally, including via home automation systems and weather sensors.

This is particularly important when large glazed areas face south or west. In such a setup, well-chosen shading systems help to limit the build-up of heat inside, whilst automation simplifies the day-to-day use of the home. In practice, this means that the way a window or door opens should be planned in conjunction with the shading system, rather than separately. Only then will the glazing function as it should: providing light, a view and comfort without excessive compromises.

FAQ

Which opening mechanism is the safest for large glazed areas?

There is no single option that will always be the best. With large glazing units, safety depends primarily on the structural rigidity, the quality of the fittings and matching the opening type to the size of the sash. In practice, the safest windows or doors are those that have been well suited to the room’s function and are not subjected to excessive strain during everyday use.

Do sliding windows compromise thermal insulation?

No, provided they are properly designed and well installed. Modern sliding doors can maintain very good performance parameters, and the overall result depends on the entire structure: the profile, glazing, sealing and installation. The mere fact that the sash slides does not automatically mean poorer thermal insulation.