With the onset of cold weather, many apartment and homeowners begin to feel unpleasant drafts coming from plastic windows. The main reason for this is usually insufficient pressure of the window sash against the frame or natural wear and tear of the sealing gaskets. Before attempting to adjust the hardware yourself, you should thoroughly inspect the window structure and review the manufacturer's official recommendations.
What is "Winter Mode" and How It Works
In manuals from leading profile and hardware manufacturers such as Salamander, the term "winter mode" refers to increasing the pressure of the sash against the window frame. In systems with appropriate hardware, eccentric locking elements called trunnions are adjusted for this purpose. Turning these elements changes the pressing force of the sash, thereby optimizing the compression of the rubber seal. However, there is no single universal scheme for all plastic windows, as designs and mechanisms vary significantly.
Contradictory Data on Seasonal Adjustment Necessity
There are noticeable differences in expert and manufacturer recommendations regarding the mandatory transition of windows to winter mode. On the one hand, profile manuals advise increasing pressure with the onset of cold weather for maximum airtightness. On the other hand, hardware manufacturer Winkhaus recommends checking and adjusting the hardware exclusively based on actual signs of malfunction: drafts, the sash catching on the frame, or difficulty opening and closing. Experts emphasize that such problems are not always solved by simply increasing pressure, and excessive force can lead to premature wear of gaskets.
Gasket Condition and Self-Maintenance Rules
A critically important step in preparing windows for winter is inspecting the gaskets along the entire perimeter of the sash. The presence of cracks, deformations, or damaged areas indicates that the material no longer provides proper tightness and must be replaced. It is strictly forbidden to try to compensate for a damaged gasket by applying stronger pressure with the hardware. If the mechanism jams or the sash is misaligned, you should contact a qualified service technician.
Safe Adjustment and Maintenance Rules
Before changing the position of the trunnions, you must identify the manufacturer and series of the hardware, find the corresponding instructions, and check if self-adjustment is permitted. Excessive pressure can overly compress the gaskets and make it difficult to turn the handle. After adjustment, check the window operation; the sash should close smoothly. If the handle turns with significant resistance, do not use force — contact a professional service master.
