And finally, I would like to take stock. According to the current building standards, the heat -conductivity index is 0.63 m2*s/WT. This is the minimum recommended to us for plastic windows. By the way, old wooden windows 2 — 3 times colder. But in fact, three chamber double -glazed windows from good energy -saving glass exceed this minimum. Therefore, the choice will become only behind the financial side of the issue.
