Coupling for windows and doors

To better understand the need for couplings, take a look at the facade of a building shell first. Such a facade consists of three elements. These are:

• Window opening
• Masonry
• Cross brace, also called a lintel

The lintel means that any weight acting on it is deflected to the side, so that it does not press directly on the window or door element used in this location. However, there are limits to the width of these struts — due simply to the laws of physics. If the wall opening for the window is wider than its maximum width, window coupling profiles offer the solution.

Depending on the area of application for which the coupling elements are intended, there is a choice between simple, large or corner couplings.

Spring and H coupling: small and simple

Spring and H couplings, which consist of small uPVC strips, are particularly suitable for connecting small windows or a French door. These coupling elements are simply installed in the openings provided on the window frame using the plug-in principle.

While the spring profile is no longer visible after coupling, the H coupling remains visible and can therefore be colour-coordinated with the window design.

Static coupling: big and strong

Large sliding doors and window elements are to be connected to form an elegant window front? This is no problem with static coupling elements, which are specially designed for high loads.

The connecting pieces have a steel reinforcement or plate – this also dissipates the forces acting on the lintel. The maximum loading width of the window is therefore increased.

For this purpose, the elements are embedded in the floor and ceiling and then screwed to the frame to form a stable connection.

It is important at this point to ensure that the window and, if necessary, door elements also have full frame reinforcement.

Corner coupling: looking around the corner

When designing the individual window front, you can literally think outside the box. Whether in a new building or during a renovation project – window elements are not always at the optimum angle to one another.

Practical corner couplings can help in this case and offer unrestricted design options. The coupling profiles are screwed to the frame of the window and concealed by being covered with a chosen, appropriate material.