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Thread: How much light do greenhouses block??

  1. #1
    gotbsnails
    Guest

    How much light do greenhouses block? ?

    Just a simple question.

    How much light do greenhouses block? ?

  2. #2
    onlinesrootg
    Guest
    Boy, it was hard to get a straight answer your "simple" question. I finally found this: "Single-skin polycarbonate has around 94-96 per cent light transmission compared to 3mm glass having a value of 97-98 per cent; 4mm polycarbonate has a value of 80-84 per cent." So a greenhouse can block anywhere from 2-20% of the light that reaches it.

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