Sagging sashes? It doesn't have to be this way.
Almost everyone has probably already experienced the following situation.
As is often the case, you open a window in the turn position to ventilate or clean it and want to close it again after a short time. In the process, the window sash starts to grind in the lower part of the window frame or, in worse cases, even needs to be raised a little with muscle power to close it.
This behaviour is normal in almost all cases. The three main reasons for this are quite natural causes:
1. Settling of the building and window: Every newly constructed building settles in the first few years, and this also applies to windows. The sashes may sag slightly during this time.
2. Severe temperature differences: The window materials expand or contract in the event of significant temperature differences (e.g. between indoors and outdoors or winter and summer). This natural behaviour can cause the sashes to sag.
3. Window aging: The materials slowly age over the window’s service life after long periods of use. As a result, older windows slowly begin to hang on the drive side.
These causes do not pose a hazard*; on the short term they are only annoying. Nevertheless, the problem should not be ignored, as the behaviour can worsen over time and lead to leaks around the window, damage to the window frame, higher shifting forces, thus shortening the fitting’s service life.
Winkhaus offers several options for solving problems with sagging sashes. First and foremost, of course, are the adjustment options in the hinge points and additional components such as DFE/TFE or support keeps, which are of course a standard feature of our fitting systems.
Our sash lifter, on the other hand, is still a relatively new solution. Thanks to its simple design and elegant operating principle, it is independent of the fitting system and reliably lifts sagging sashes when the window is closed. Particularly heavy window sashes can be lifted easily and effortlessly.
The sash lifter is also particularly recommended for double-sash windows, as many lifting devices mounted on the gear of the first-opening sash press the second sash downwards, as they support the first-opening sash against the second-opening sash.
The situation with the sash lifter is different. If two sash lifters are used, the sashes are unburdened independently of each other and both are supported against the frame.
