The popularity of plastic windows is not doubted. They have many advantages, so they are in demand. There are much fewer problems during operation, but still they are. Over time, you have to repair structures. The replacement of double -glazed windows in plastic windows is not excluded if they are damaged. It is better to entrust such an operation to specialists. They will not only qualitatively replace, but also select a suitable double -glazed window, which is extremely important for the tightness of the window. Experts have all the necessary set of tools to conduct a replacement without damaging the structure. Problems with fittings may occur. When an attempt to change the position of the sash does not give results, then you should pay attention to the brand of accessories. There are differences in the design in models from different companies.
However, in one form or another there is an element that is responsible for operations with the opening of the window. It should just press it so that the window can be closed. The pen at a certain moment can also present “surprises”. When jaming the handle, you have to lubricate the mechanism. Buy the necessary substance is not a problem. The problem of sagging sash is solved by the removal of protective pads and tightening fasteners using a hexagon. One of the advantages of such windows is complete tightness. If it is broken, then you need to look for the reason.
It can be a cracked double -glazed window, which should certainly be replaced. The seal will have to be changed over time so that the window fully fulfills its original functions. A lot of problems appear if the installation was poor -quality. If the window is not installed in level, then the sash will certainly begin to sag, since the load is distributed unevenly. Proper care of windows and timely elimination of problems will allow to extend their operation.