Each uPVC window has three special eccentrics. These are adjusted with an Allen key and can be set for summer or winter use depending on the season. By turning the eccentric, the pressure of the window sash on the frame changes - now in more detail. To prevent the window from flying away, adjust the eccentric so that it points mostly towards the center of the house. This presses the seals tightly against the window frame, preventing cold air from entering. For clarity, I have shown in the picture the location of the eccentric on the inside of the window, depending on whether the window is set for summer or winter use.
Window adjustment.
Once the lower eccentric has been adjusted, we move on to the other two eccentrics to ensure even pressure around the entire perimeter of the window.
Then we compensate for any remaining eccentricities.
It is also worth checking the condition of the seals, as they lose their effectiveness over time and should be replaced if necessary.
The window is now draught-free, which is visible as a flat flame.
As a result, such a simple adjustment will help solve the problem of window drafts, the house will become warmer, and there will be no snow on the windowsill in winter.
