Windows
The types of windows offered by CB Aluminium System, for residential and commercial use. Below you will find all the information regarding the construction, differences, and specifications of each type of window.
Fixed
Fixed windows are much more than just "non-opening panes" – they are a strategic element of modern architecture that allows for the free operation of light and space where traditional sashes would be too heavy or non-functional.
Division of structures according to their construction and location:
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Single-pane models: These are single, undivided panes of glass in a single frame. Ideal for creating so-called "living pictures," where the window frames the view outside without any vertical or horizontal visual barriers.
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Multi-section models: Equipped with posts and crossbars dividing the surface into smaller sections. Used not only for aesthetics (e.g., in loft or classic styles), but primarily to enhance the rigidity of the structure in very large openings.
The choice of system depends on whether the window is supposed to be a subtle detail or a dominant element of the building's exterior
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Standard: A proven solution for typical window openings. They offer the best price-to-thermal insulation ratio.
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Slim: Designed to make the frame virtually invisible, they allow for a larger glazing area within the same opening, resulting in better interior lighting and significantly improving the aesthetics.
Facades / Curtain Walls represent the highest level of fixed glazing. They utilize a framework of aluminum mullions and transoms, allowing the creation of large glass surfaces that, in conventional window systems, would simply bend under their own weight or wind pressure.
Side-hung
Side-hung windows are a classic of their kind, symbolizing simplicity, openness, and reliability in an age of complex multi-functional mechanisms. Unlike popular tilt-and-turn windows, this model focuses on a single, specific movement.
The foundation of this solution is the opening function, i.e., the movement of the sash around a vertical axis. The lack of a tilting mechanism makes the fittings less complex and therefore sometimes more durable.
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Visible hinges: A standard solution where the hinge covers are visible on the frame. They allow for a wide opening angle and are easy to adjust.
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Hidden (invisible) hinges: The entire mechanism is hidden within the rebate (between the sash and frame). When the window is closed, the hinges are completely invisible, giving the structure a modern, minimalist look and making it easier to keep the frame clean.
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Handle and hardware: Although simple to operate, the hardware can be enhanced with multi-point locking, significantly increasing tightness and resistance to burglary attempts. Furthermore, handles can be individually selected for aesthetic appeal.
Side-hung windows are often chosen for applications where access control or extreme security is a priority.
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Hotel Solution: Using a key-operated handle prevents guests from opening the window. It remains locked for security purposes and can only be opened by housekeeping staff to clean the windows.
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Resistance classes (Burglar-proof): Thanks to their solid construction, these windows can be equipped with RC2 or RC3 class fittings, reinforced catches and handles with anti-drill protection.
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Bulletproof windows: This represents the highest level of technical sophistication. They require specialized, thick glass units and reinforced profiles (usually steel or aluminum with a special cross-section) that can absorb the energy of a bullet impact.
Moreover, some systems have additional stylistic variants for such windows.
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Concealed sash: From the outside, the sash frame is completely concealed by the frame. This gives the appearance of only the glass in the wall (like in "fixed" windows), even though the window opens.
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Slim: Extremely narrow frame profiles that increase light penetration and give the structure a lightweight feel.
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Decorative profiles: Profiles with non-standard shapes (rounded, rustic, etc.) ideal for renovating older houses and residences in the style of traditional architecture.
Tilt
Tilt windows are the foundation of safe and discreet ventilation. Unlike side-hung models, their design is based on a pivot axis located at the bottom edge of the frame, allowing the sash to only tilt inward. This is an ideal solution where space is at a premium or where fully opening the window would be unsafe.
Simplicity and stability are priorities in a tilt window. The sash tilts by a dozen or so degrees, creating a ventilation gap at the top.
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Hardware System: Equipped with dedicated tilt hardware and visible hinges (usually located at the bottom). This mechanism is exceptionally resistant to accidental slamming due to drafts.
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Limiters: Special elements that prevent the window from tilting too much, ensuring safe use even in strong winds.
Thanks to their limited opening function, these windows are a natural choice for places with increased security requirements.
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Anti-burglary reinforcements: Even though the tilt seems to be "more delicate", these windows can have advanced anti-burglary fittings (RC class) that protect the house against attempts to force the sash open.
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Bulletproof versions: Although this feature is less common, technology allows for the production of tilt windows with bullet-proof glass and a reinforced frame, which is used in facilities with the highest level of protection.
Tilt windows don't have to be boring – modern systems allow them to be adapted to the most demanding projects.
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Concealed sash: From the outside, a tilt-and-turn window can look identical to fixed glazing. The sash frame hides behind the frame, creating the effect of a clean, clear glass pane.
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Slim: Extremely narrow frames allow more light to enter the interior, which is crucial in small rooms (e.g. bathrooms or dressing rooms).
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Decorative and shaped windows: The tilting system can also be equipped with decorative profiles and used in windows with unique shapes.
Tilt and Turn
Tilt-and-turn windows (often marked as T&T) are the most versatile and most frequently chosen standard in contemporary European construction. Their versatility lies in the integration of two operating modes in a single sash, allowing for complete control over air exchange and access to the outdoors.
In these systems, all functions are controlled by a single handle. The key difference is the order of operations, which determines the type of hardware used:
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Tilt and Turn System: A classic model in which the horizontal position of the handle opens the window to the side, and turning it vertically upwards activates the tilt.
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Tilt-First System: A solution that promotes safety. The first 90° turn of the handle only tilts the sash, and only when the handle is fully turned upwards can the window be opened fully.
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Hinges and aesthetics: These structures can be based on traditional visible hinges (with covers in the colour of the profiles/handle) or on hidden hinges that are completely hidden under the sash rebate, eliminating thermal bridges and improving the design.
Thanks to the advanced design of the fittings, these windows offer the highest level of personalization in terms of security:
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Hotel security (Handle with key): The key can act as a selector - after turning it, the user can only tilt the window, while the full opening function remains blocked (available, for example, only to window cleaning staff).
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Burglary resistance: T&T systems allow for the installation of numerous locking points in the form of so-called mushroom-shaped anti-burglary bolts. Combined with the appropriate frame, they can meet the stringent RC2, RC3, and RC4 class standards.
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Bulletproof variants: Despite the complex mechanism, it is possible to create windows combining both functions with certified bullet resistance in aluminum systems, which requires the use of specialized glazing units and reinforced fittings.
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Micro-ventilation: This is the only system that allows for so-called micro-ventilation (unsealing), i.e. setting the handle at a 45° angle, which ensures the supply of fresh air without having to open the window.
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Concealed sash: From the outside, a tilt-and-turn window can look identical to fixed glazing. The sash frame hides behind the frame, creating the effect of a clean, clear glass pane.
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Slim: Extremely narrow frames allow more light to enter the interior, which is crucial in small rooms (e.g. bathrooms or dressing rooms).
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Decorative and shaped windows: The tilting system can also be equipped with decorative profiles and used in windows with unique shapes.
Pivot
Pivot windows are a unique design solution that redefines air circulation and space management around the window opening. Their defining feature is the specific location of the pivot axis, which allows the sash to be rotated by up to 180°, making them one of the most ergonomic designs on the market.
Unlike traditional side hinges, a pivot window relies on specialized fittings placed halfway up the height or width of the frame.
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Horizontal axis: The sash rotates around an axis running through the center of the window's height. The lower section of the sash extends outward, while the upper section extends inward (or vice versa, depending on the system). This is the most common solution for roof windows.
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Vertical axis: The sash rotates around a central vertical axis. This solution is often found in modern architecture as eye-catching, large-scale vertical glazing.
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Braking mechanism: Advanced pivot fittings are equipped with friction brakes that allow the sash to be locked in any opening position, preventing it from slamming shut.
Awning
Awning windows are a specific type of joinery designed to open the sash outward. In this system, the axis of rotation is located at the top edge of the frame, and the lower part of the sash is pushed towards the exterior of the building. This solution is highly valued in modern commercial and residential construction, where space is conserved, and is also popular in North America.
The foundation of this window is a specialized scissor or pivot fitting, which differs from the standard hinges used in inward-opening windows.
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Outward movement: By pushing the bottom of the sash outward, the window doesn't take up any usable space in the room. This allows for any arrangement of the windowsill or placing furniture directly under the window.
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Pressure stability: This design uses the forces of nature – wind pressure presses the sash against the frame and seals.
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Handle operation: Despite the unusual opening direction, the control is performed using a classic handle that sets in motion a mechanism that smoothly locks the sash in the selected position.
Awning windows are a favorite of architects looking for a glass pane effect on the facade.
For this purpose, awning windows are integrated into the façade system. A structural façade allows us to achieve a borderless glass pane look by covering the external edges of the profiles with glass.
A "Crank Out" fitting, which allows you to operate the sash using a crank instead of a handle, is also available, although very limited by max dimensions.
Complex structures
Complex structures consist of various interconnected windows, doors, facades, etc., for example, a fixed window combined with an opening window and door. Such structures sometimes require, for example, additional flashings in the inter-story area or non-standard connections between individual structures.
Such structures come in all kinds of configurations and with drastically varying degrees of complexity.
