While most greenhouses make heavy use of plastic in some way, not all greenhouses use the same type of plastic. This is because plastic is a more cost-effective, sturdy, weather-proof, reliable, and workable material than the greenhouse glass that came before it. Here’s an in depth video about the different types of greenhouse materials, with more info below on specifically blocking UV rays:ĭo All Greenhouse Plastics Block UV Rays?Īlmost all modern greenhouses are made from plastic or covered with plastic. Transparent plastics allow more sunlight and more UV rays to enter the greenhouse than opaque plastics do, and the modern polyethylene bubble-wrap sheeting is more effective for blocking out UV rays than standard polycarbonate coverings. This UV-resistant coating on the plastic used for greenhouses, whether plastic panels or plastic sheeting, means that greenhouse plastic does block UV rays – to some extent. The plastics used for greenhouses usually have a coating on them that protects them from UV rays.UV rays degrade plastic very quickly, and so they must be designed to block as much of this harmful radiation as possible.These plastics are usually designed this way so that the UV rays cause minimal damage to the plastic itself.The plastics that are used for constructing and covering modern greenhouses are usually UV resistant.This means that glass is not damaged by UV rays, and it is relatively effective at blocking out UV rays while still allowing sunlight into the greenhouse.ĭo modern plastics share these same characteristics that made glass so effective for greenhouses of the past? Do greenhouse plastics block UV rays? Glass is somewhat effective for blocking out UV rays, especially harmful UV rays, while being entirely resistant to the harmful rays themselves. These plastics were developed to replace glass that was traditionally used for greenhouse paneling. There are many various forms of plastic used for greenhouses, and they each have their own benefits. Modern greenhouses are usually built from, or covered with, some form of plastic. Conclusion Does Greenhouse Plastic Block UV Rays?
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