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  • 2 Post By raybark
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Best film for greenhouse?

This is a discussion on Best film for greenhouse? within the Semi Hydro / Lights / Greenhouses / Accessories forums, part of the Orchid Culture category; Hello, I have a question about the plastic to cover an orchid greenhouse, which type ...

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  1. #1
    nuecas is offline Junior Member
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    Default Best film for greenhouse?

    Hello,
    I have a question about the plastic to cover an orchid greenhouse, which type is the best? width? etc....70% of my orchids are cattleyas with a few psychopsis, and dendrodiums.
    Thanks for your help....

    Neo

  2. #2
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    I'm using plastic that is 4mm thick and 20 feet wide, I've tried using smaller pieces, but that leaves spaces where the wind can get between the layers, hope this helps

  3. #3
    Michael Saar is offline Senior Member
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    Quote Originally Posted by stateless View Post
    I'm using plastic that is 4mm thick and 20 feet wide, I've tried using smaller pieces, but that leaves spaces where the wind can get between the layers, hope this helps
    Assuming you're still talking about film, you probably mean 4 mil or .004".

  4. #4
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    Quote Originally Posted by Michael Saar View Post
    Assuming you're still talking about film, you probably mean 4 mil or .004".
    yes 4 mil I type faster than I think at times

  5. #5
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    go for the thickest mil you can afford. If not, you will be replacing it often.

  6. #6
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    If I'm not mistaken (something that happens more-and-more often as I age), 6 mil is pretty much the standard for greenhouse film, and it pays to get one with UV inhibitors in the surface, or you'll be replacing it at least annually - especially in the Florida sun.

    As far as width goes, measure the span it has to cover, add a foot, then double that. That way you can put a double layer and inflate the space between with a small blower. That is important to do - even in a warm climate where insulation is not a huge need - because the inflation gives the film more stability in wind. A single layer attached to a structure can get ripped off much more easily.

  7. #7
    nuecas is offline Junior Member
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    Thank you all for all their advise, one more thing, if the film is too thick 6mil? would my orchids receive enough light?
    Thanks...

  8. #8
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    You need not worry about that, considering that you are in Tampa. You're going to need to use shade cloth to reduce the light levels to your plants anyway, so the minimal reduction provided by the film is inconsequential.

  9. #9
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    I have heard from people that using a plastic cover in an orchid greenhouse; causes huge amount of heat buildup in there. Your orchid plants will suffer from the heat damage on a sunny day. You can prefer knitted shade cover protecting the plants from sun and wind without collecting the heat.

  10. #10
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    Any enclosed structure will build up heat - that's why you have cooling, circulations and ventiliation. - AND shade.

    One of the advantages of an enclosed structure over an open shade house is better control over watering, pestsm etc.

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