"Warm" is called glazing balconies with plastic glazing. They have several advantages, but not always profitable. Sealed windows do not let the cold air and on the balcony becomes significantly warmer. This option appropriate when you want to create a specific microclimate on the balcony, for example, to grow flowers. But if you intend to use the balcony as a dwelling, it is impossible to rely only on the glazing plastic glass. You will need additional spending – a complex finish, wall insulation, top and bottom plates, summing up the wiring and heating. In plastic windows, there are some disadvantages: they reduce skylights, and in the adjacent room becomes darker. In addition, in the summer, at a balcony can be very stuffy, so it is important to establish not deaf, and opening doors.
Then you will have the opportunity to ventilate room in the heat. But these deficiencies deprived of the "cold" glazing, which consists of a sliding aluminum structures. The only drawback of aluminum balcony – the inability to retain heat. In Otherwise, they are very convenient in operation: sliding doors are easy to wash, open, ventilate the room. On this balcony will never close, or dark – aluminum, unlike plastic, does not narrow skylights room. K Moreover, leaf apart to the sides with roller mechanism – quickly and comfortably, and do not clutter up the space a balcony. But the lunch or tea on a balcony in the winter it is impossible, especially in cold weather – the temperature on the balcony only a few degrees higher than .I a "warm" and "cold" glass has its pluses and minuses. Decide how you will use the loggia – as a hothouse flower, a living room-terrace or simply as a convenient addition to the apartment. And depending on that, choose the type of glazing that will suit you to the destination.