The window defect can be determined by logical fabrications, if with all equal characteristics only one window fogs, then it is clearly with a defect. If all windows are covered with moisture, then most likely the reason is not in this factor. It is very unlikely that all the windows are defective. The defect should be eliminated by the company that installed and made windows. This option is quite rare, most likely, the matter is for another reason.
For example, too wide glass package. In this option, only ventilation of the room will be effective to reduce humidity from the inside. In other ways, this factor cannot be equated. You can, of course, install air conditioning, or climate system. But, it is best to immediately make sure that the window is not too wide in thickness. This cannot be affected if the windows are already installed. The best option is seventy millimeters. Which will provide all characteristics, and will not indulge the formation of fogging of plastic window systems.
Thus, the best guarantee of the normal functioning of the window is its high -quality manufacture and professional installation. An experienced master will always tell you that you should not use the large thickness of the double -glazed window.