<P>Each nation built their homes in accordance with climatic conditions and their ideas about beauty. But all, without exception, has windows and doors. The primitive man, finding a cave suitable for housing, immediately made peculiar doors – hung at the entrance of the skin of the animal killed by him. People quickly realized that the heat in the cave was stored in this way.</p>
<P> With the development of society, houses were increasingly improved. Gradually, a person began to think not only about the reliability of windows and doors, but also about their beauty. It is enough to recall the beautiful doors of the rich houses of medieval Samarkand, lanceting windows in the Gothic architecture of European countries. In Russia, carved platbands and shutters on the windows served as excellent decoration of the house.</p>
<P>Times are changing, fashion changes, including architectural. In modern cities in multi -storey buildings, beauty and reliability manifested itself in a completely different way. Currently, the housing of the townspeople from noise and dust reliably protect metal -plastic windows. These new materials have become good wood substitutes, which is not so much on our planet. The latest technologies for the manufacture of metal -plastic windows allowed, practically, in each city, open workshops for their manufacture.</p>
<P>Many tenants have been trying to warm their balconies recently. This gives additional heat in the apartment. And some, thanks to the insulation of the balcony, get another room there for a variety of purposes: they arrange a study, a playing room and so on.<Br />
<P>Thus, installing metal -plastic windows in his housing, a modern person receives additional heat, beauty and for a long time forgets about repair and painting.</p>