We use various types of gaskets to seal windows and doors: nailed down, glued or recessed into grooves. We must remember this in any case, that the fixed seal does not tear off when closing the sash of the window or door. When closing, the leaf should evenly press the seal against the frame. Therefore, on the vertical edge of the leaf near the lock and on the horizontal edges, we fix the gasket in the leaf rebate. At the hinges, install the gasket not on the sash, but in the frame rebate.