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How to choose a polycarbonate for the greenhouse

January 27, 2018
Articles

For the arrangement of greenhouses only glass was used not so long ago, but over time, the developers have proposed more convenient materials that are distinguished not only by a good ability to transmit light, but also by strength and low weight. One of these materials is polycarbonate, which is sold in monolithic and honeycomb types, and its thickness and color can also differ. Therefore, before making a choice in the direction of one or another option, it is necessary to study well the properties and characteristics of each of them. How to choose a polycarbonate for the greenhouse

As you know, the main purpose of greenhouses is to create the most acceptable climatic conditions for the growth of certain varieties of agricultural plants over fairly large areas. To ensure this, the structure must be large enough and voluminous. To construct such a structure, it is desirable to use materials with a small mass, otherwise the crate, and its foundation, too, will have to be made rather heavy.The best option in terms of these requirements is the use of cellular polycarbonate, characterized by the presence of internal voids. Due to this feature, its weight is significantly less than monolithic polycarbonate. The presence of air interlayers also increases the sheets to retain heat, which is very valuable in the operation of greenhouses.

Cellular carbonate also has quite a few varieties, and therefore it is worth looking at the indicators of strength, resistance to climatic changes, thermal conductivity, coefficient of conductivity of light, etc. An important role is also played by how well the quality components were used in the manufacture, and how accurately the technology was followed. These parameters often affect the price of the material, so the cheaper it is, the more problems may arise during operation.

The thickness of polycarbonate sheets also matters: the thinner the material, the cheaper it is. However, for the cheapest sheets will have to build a more reinforced frame, due to the threat of breaking sheets under its own weight. On the other hand, very thick sheets, though more reliable, but rather poorly transmit light.It is believed that for the greenhouse the most suitable option is polycarbonate 4-10 mm thick, while the frame should be mounted at the rate of 2-3 strips per sheet.

If the greenhouse has an arched configuration, then it is necessary to take into account the permissible maximum bending, which is influenced by both the thickness and the manufacturer. Since the snow load on different parts of the greenhouse is different, it is often for the roof that a thicker material is taken than for the slope. In regions with heavy snowfall in this case, the most suitable arch type greenhouses.
 How to choose a polycarbonate for the greenhouse
With regard to the coefficient of penetration of sunlight, then it is taken into account what kind of plants will be grown. Transparent polycarbonate has a high degree of permeability, up to 80%. In painted sheets, this percentage is lower, in addition, they can give a particular shade. But the most optimal solution for greenhouses is still transparent polycarbonate, because it is able to provide the most complete coverage in terms of the spectrum.

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