But the most important can be called the moment of choosing a company from which PVC of the window should be purchased. In this matter, one should give preference to the one that has its own production facilities and has been working in this market for at least 5 years. So it is possible to guarantee the quality of the purchased products, since such campaigns have previously invested considerable funds in the development of their business, received a license for the right to carry out this type of activity and certified their products. As a rule, the warranty on plastic windows is from 3 to 5 years.
