Discussion
Thickness of UV stabilized polyethylene used as a cladding material in greenhouse is
Answer: B
The cladding is usually 200 micron thick.
Greenhouses in India are commonly covered with UV-stabilised low-density polyethylene film of 200 micron (800 gauge). UV stabilisation stops the film from becoming brittle in sunlight, and at 200 micron it lasts about three years while transmitting enough light for crops.
Thinner film of 100 micron tears easily and degrades quickly, and thicker films of 250-300 micron cost more and cut light without a matching benefit, so 200 micron is the standard specification.
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