We get a lot about the issue as a polycarbonate greenhouse cover. In most cases, we found that people tried to complicate the issue.
Simply put, a polycarbonate plastic. It is lightweight (one-sixth the weight of the glass), almost unbreakable (even greater impact strength than glass 200 times), has excellent weather resistance (due to one or both sides of the sheets on the UV protection), with excellent insulation (due to multiple levels and channels between), is flexible, easy to install (see specific information for each thickness). You can buy in solid sheets, corrugated, or layers. A typical configuration for the greenhouse glass and multi-layer corrugated board. Solid form is not recommended because, due to the fact that they are not in the side of the widespread use of UV protection. UV protection will keep the paper yellowing or get brittle. Some people mistakenly think this will affect the paper’s optical transmission. It has nothing to do with. Zhang UV protection is to ensure that one is usually 10 years of yellowing and hail damage. This will vary from manufacturer to manufacturer. Zhang also has both UV protection. These are usually used for printing on both sides are exposed to sunlight, such as fencing and other vertical applications. While this may be used for the greenhouse, it is usually more expensive and unnecessary.
Corrugated polycarbonate sheet is a single, usually very thin, typically 0.8 mm. It is a wavy or greca style. Has brought a great greenhouse, but will not have as much insulating double wall form factor.

Most greenhouse glazed with clear polycarbonate. It is also available in bronze and opal. These will reduce the light dramatically. Of course, whether to consider the opal or bronze will depend on your specific plant needs. There are also some professional table will reduce heat build-up in the greenhouse. Two such examples Polygal and GE’s Lexan Thermoclear plus Softlite Polycoolite.
Finally, the polycarbonate is an excellent choice for glass greenhouse. It is easy to install and durable.
Polycarbonate can be made of Polycarbonate Solid Sheet, Polycarbonate Embossed Sheet, Polycarbonate Hollow Sheet, Polycarbonate Embossed Sheet, etc.
Therefore, to understand Polycarbonate, Polycarbonate related products you buy are of great help.