Previously, in our homes there were two frames of wooden windows, which before each winter had to be insulated. Now they were replaced by more modern plastic windows. And they seem to be made without any cracks, but still require insulation. Probably, almost every person came across such a problem after a couple of years of operation of windows. In order to determine how exactly it is necessary to insulate the window, it is necessary to identify the cause. Having checked the windows, it is necessary to install where exactly, the cold penetrates the apartment. The reasons can serve as several different factors. The most important reason may be old worn elastic bands. Over time, when opening and closing windows, hermetic elastic bands wear out and lose their original properties. If the cause is in them, then this means that the elastic bands need to be replaced. Buying such elastic bands will not be difficult. Just visit a specialized store is enough. The problem can also be in the mounting foam, which poured gaps between the window and the wall. Most likely she, over time, lost her properties and simply turned into a dust. In this case, you will need to remove the remnants of the old penalty and fill the holes by the new. I want to note that if from under the slopes it blows almost from the very moment of installation, then this is most likely related to saving materials when installing. Bend a plastic slope and look behind it. The space between the wall and the slope during high -quality work should be filled with foam to the maximum. If you see numerous voids, fill them with foam. The cause of the draft between the frames can be a slight shrinkage of walls or the shaking of the mechanism. Here it will be enough to adjust the door door door. Also, for insulation, you can smear all the cracks from the outside of the window using a concrete solution. And the internal plastic slopes replace drywall. You can also replace your double -glazed window with a thicker one, using from 3 to 4 flow. Thus, the window will be well insulated. But let’s imagine the situation when -300C is on the street, pulls from the window with cold and if you start to warm it up, you just freeze and cool the apartment at the end. In this case, you can simply tighten the window with a plastic transparent film. She misses the light and holds the heat well. This will help you stretch out until the summer without drafts and cold in the apartment. And in the summer to fully insulate the windows.