Why are the frames and the sash are attached to the seals for metal -plastic windows? In order to ensure the proper indicators of water – and sound permeability. A quality product allows you to guarantee almost 100% that no moisture will leak inside the apartment. Even with a strong hurricane wind.
What are
For the production of this element, a material with a very sophisticated name is used-ethylene-protopylene-Termopolymer-kachuk. In the International Classification, it is known as EPDM. The main advantages of the material include:
elasticity;
durability;
strength;
resistance to external environment.
Most often, window structures are supplied with a double shell circuit. True, there are some luxury models of windows in which three contours are used at once. However, this system did not receive widespread for two reasons. First – profiles are too expensive too expensive. The second is the need to make changes to the work of production lines, which are still unknown when they pay off. Although it is obvious that the triple contour is the maximum protection of the room from extraneous noise. In addition, it perfectly prevents moisture and dust from entering the elements of accessories, which can cause its failure.
Features of operation
Products of different manufacturers can have one-, two – and three -petal configuration. In this case, each of them is characterized by a fairly wide surgery. The results of special tests showed that the competently installed window structures made of polyvinyl chloride equipped with reliable elements of the described type allows them (structures) to withstand the wind, the speed of which can reach 120-150 km/h/h/h.
The most important characteristic of materials of this type is low residual deformation when compressed. In other words, in the case of the mentioned influence on the material, he seeks to return to his original form. At the same time, the excellent elasticity, which was already mentioned above, remains even at a temperature of -50 degrees Celsius. But only a certain time.
Due to its structure, the described material fills all the existing surface defects: gaps or irregularities. Thanks to this, the window block becomes an insurmountable barrier on the path of the elements and bad weather.
However, you need to understand that it is not eternal. Over time, the material can become brittle and porous. Naturally, in this situation, you should not delay and replace the old material with a new. It should be noted that the cost of the material is very, very low. Moreover, with a certain dexterity, it can be replaced by yourself. To do this, you just have to remove the double -glazed window from the sash. You need to do this with special accuracy. Otherwise, due to its special fragility, the stagnation holding the double -glazed window may break, which means that the time has come to order a new window structure.
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