What is affected by the density of polycarbonate and how to find out?

Dachnikov and owners of country sites are very popular with polycarbonate greenhouses. In addition, such a material can be used when creating terraces, pavilions, visors and a veranda. When choosing a suitable type of polycarbonate, its density should be taken into account so that the structure is solid and durable.

What means?

Polycarbonate is a modern material made of polycarbonate granules, which can be cellular and monolithic. Such material misses sunlight as glass, but has greater durability and durability. In addition, it retains heat well, has good flexibility and less weight.

When choosing such a translucent material for greenhouses or other structures, polycarbonate density should be taken into account. This is an important technical characteristic describing the weight ratio to the volume, which is indicated as kg per m3.

This is an important indicator that may differ not only in monolithic and cellular polycarbonate, but also in the sheets of the same type and the same thickness. Weight that has one cubic meter of material variety from 0.52 to 0.72 kg. A lightweight cellular sheet of polycarbonate may differ wall thickness and internal stiffeners, which affects its strength.

The thinner the inner partitions of honeycomb, the less strength and impact resistance of such a material. If greenhouses or other structures are collected from such a polycarbonate, they should be regularly cleaned from snow in winter, otherwise they will simply break under his weight.

Lightweight polycarbonate with subtle inner partitions is cheaper, since its shelf life is 3-4 years less than that of polycarbonate with greater density.

What depends on the density?

This is an important characteristic of a material that affects the quality of polycarbonate:

  • Mass;
  • Features of the internal structure;
  • volume and thickness;
  • its transparency and ability to skip sunlight;
  • Sheet weight.

    The density value ultimately determines the operational characteristics of the polycarbonate and affects the fact that such a material can be used to resist such external factors as:

    • Temperature regime;
    • wind;
    • exposure to sun rays;
    • hail;
    • snow.

    The greater the density of the polycarbonate, the longer the life of its operation and higher resistance to the impact of negative factors.

    It should be borne in mind that the high values ​​of the density of such material significantly reduces its transparency, which makes it impossible to use it for growing vegetables and other cultivated plants in the closed soil.

      The density of the material is directly related to its weight. When choosing a polycarbonate for a specific type of construction, the strength of the metal structures should be correctly calculated, of which the framework will be collected. Otherwise, the metal structures may not withstand the weights of too dense and heavy material made of polycarbonate capsules.


      When choosing a suitable polycarbonate, it is possible to determine this parameter to the eye only at the monolithic sheet. At cellular polycarbonate, the optimal density is selected by special standards that can have the same thickness with different indicators.

      In monolithic polycarbonate, the average density is 1.18-12 g per cubic millimeter. When using monolithic sheets, small differences in the density of the material do not affect the strength of the construction elevated. Monolithic polycarbonate is used in the manufacture of interroom and office partitions.

      At the cellular analogue, the density is more diverse and is very different in the values. When choosing lightweight sheets, use a special standard table, in which it is indicated, for which purposes a cellular polycarbonate of a certain density can be used.

      For greenhouses and light designs, it is recommended to use low density sheets, 4-6 mm thick. In this case, it is possible to maintain the optimal ratio of the strength and thickness of sheets.

      High-density sheets at 0.72 g / m3 and 0.82 g / m3 are used in the construction of canopies, visors, pavilions and other structures, for which there is not so much ability to pass light, how much high material strength. In this case The difference in density and weight requires use as a frame of more durable metal structures capable of withstanding the weight of such polycarbonate.

      The most durable and dense is considered a luxury polycarbonate sheet capable of detaining bullets and withstand the effects of fine-caliber projectiles. From such high strength material makes shields for special services.

      How to determine?

      Density can be found when buying, having studied sheet marking. The manufacturer always indicates such a characteristic of polycarbonate in marking. To correctly choose the material of the desired density, you can ask the seller to calculate not only the number of sheets, but also this characteristic for a particular design.

      Check the density can be purchased by a simple compression test. The higher such an indicator, the more difficult it is to compress a sheet of cellular polycarbonate with hands.

      More dense analogues from less dense and durable can be distinguished by price.

      Quality and durable cellular polycarbonate, calculated for a long service life, refers to the average and luxury price segment. Sheets with a maximum density of 0.82 g / m³, the thickness of which is measured in millimeters, can cost cheaper than 1000 rubles.

      Distinguish sheets with different density visually inexperienced person is very difficult. Therefore, you should always access the services of proven manufacturers who sell their products in a wide range. Such companies will help to properly select the optimal density of cellular or monolithic polycarbonate, which is measured in standard indicators (grams per millimeter cubic).

      What sheets to choose?

      The choice of polycarbonate of a suitable density depends on the design assignment for which such material is selected. For greenhouses and winter gardens it is better to choose a cellular polycarbonate with a density of 0.4 to 0.6 g / mm3. Such material is better missed solar light and is characterized by acceptable strength.

      The design of the greenhouse having a swollen shape does not give the snow to linger on the surface of such a structure in winter, which allows to reduce the load on the sheets of medium density and avoid their destruction under the weight of the snow.

      For canopies, pavilions, glazed terraces, a veranda or interior partitions it is better to use a high-density polycarbonate that passes less light. If you order such a material from a well-known manufacturer or an official representative, you can get free consultation and calculations when choosing the sheets of optimal density for certain needs.

      For insecured structures that are used throughout the year, sheets are needed with medium and high density. For collapsible structures, which are used only in summer, and for the winter are disassembled and stored in the assembled form, a cellular polycarbonate is suitable with less density, which is cheaper.

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