Polyethylene film is a thick, flexible material that comes in sheets of various thickness (measured in mil) that can be used in single or double layers (for better insulation). A quick and inexpensive option for growers, TekSupply's high quality greenhouse film has ultraviolet (UV) protection and offers excellent tensile strength durability. Polyethylene plastic greenhouse film translucency diffuses light well, bouncing the available sunlight and reducing shadows, both of which aid plant growth. Poly film is also easy to install with homeowner tools and modest building skills.Polycarbonate
One of the strongest greenhouse coverings, polycarbonate is a translucent rigid plastic that is almost as transparent as glass. It is available in corrugated single layer or flat twin wall thickness — the air pockets between the two walls acts as an insulator. Light transmission through polycarbonate is very good and the lightweight material can be easily cut and installed.
Read our Greenhouse Coverings Buyer's Guide.
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