To date, the PVC class windows of the economy class are most popular, because you can purchase such windows at the most affordable price. The profile from Germany is in slightly less demand, because its cost is high, which makes it inaccessible to most citizens. Order in the city of Zelenograd increasingly manufacturing and further installation of the windows of the profile KBE, Rehau. The cost of a completely finished product with further delivery and installation is the most affordable. The low price causes excellent demand, and therefore they buy windows both by owners of real estate of residential type and for installation in commercial premises. According to sellers, the peak of demand is the beginning of autumn. Buyers are in a hurry to install windows before frost, because they want to increase the thermal insulation characteristics of their home, well insulate it.
At all, despite the fact that some dealers offer customers to use enhanced double -glazed window, there is no need for such insulation. Experts note that a lot depends on which side of the world the windows. So, if windows come to the north, it is better to give preference to increased double -glazed window, but most often, it is optimal to use a two -chamber double -glazed window.