How to cheat sellers greenhouses

The demand for polycarbonate greenhouses every year only grow. They are much more durable, long-lasting (up to 20 years of service) than simple greenhouses of the film.

Polycarbonate lightweight material and diffuses the light well. But often the sellers greenhouses cheat their customers, inventing non-existent their product competitive advantage.

The protective layer against UV

When the sellers say that there is protection in the mass (material), do not believe this trick. UV protection is only applied to the front surface. Visually, this protective layer is not seen.

Without the protective polycarbonate film yellowing over time or becomes turbid. polycarbonate plate has an inscription that there is protection from UV. Must necessarily be an indication of the protected party. This aspect is necessary to stack the sheet to the sun.

Typically, sheets that are not packed in the protection film. Some buyers are confident that this film protects from the sun. Therefore, do not remove it from the material.

5 ribs

There are some entrepreneurs who assure that greenhouse 5 ribs. All the hype on their part that they are 2 lower standard of ribs passes for additional structural reinforcement.

metal Thickness

Some sellers inform customers that a metal thickness (profile) of a 1.2 or 1.5 mm. It is possible to measure the thickness, so as not to be deceived. The thickness of the galvanized profile should be at least 0.8 mm.

You should not trust the seller, who says that it is better to buy a profile with ground or powder coated. They say that it is a reliable protection against corrosion and better than zinc.

In fact, powder processing similar to the usual painting and eventually will crack. After 3 season such profile prorzhaveet through.

polycarbonate Thickness

It should pay particular attention to the density of the material. In larger greenhouse density lasts longer.

The optimal density of 0.7 kg / sq.m. This figure can be seen on the protective film. The optimum thickness of the sheet material - 4 mm.

The cross section profile

On sale is a profile 20h40mm and 20x20 mm. The first is the best. Structure with a rectangular cross section is much stronger than with square section. Therefore, when the sellers are assured that there is no difference between the profiles, they are cunning, or do not know.

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