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Polycarb greenhouse and high winds

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  • #1

    Polycarb greenhouse and high winds

    Has anybody had any experience of polycarb greenhouses in very windy exposed positions.

    I have purchased (via fleabay) an aluminium and polycarb greenhouse but I am scared to erect it due to the high winds we get on this exposed site. I have planted a willow windbreak last month but thats going to need a year at least before its going to help.

    I was going to fix it to railway sleepers to give me some extra headroom (I am 6'3") and to help weigh it down but are polycarb strong enough to cope with high winds as they seem very light weight (flimsy)
    Last edited by janzbro; 16-11-2015, 09:38 PM.
    82.6% of people believe any statstic!
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  • #2
    How exposed is your site Janzbro? Are you in a raised area?
    Are you on an allotment? Is there anybody else nearby with a greenhouse,
    if you pin it down to the railway sleepers it should be fine.

    And when your back stops aching,
    And your hands begin to harden.
    You will find yourself a partner,
    In the glory of the garden.

    Rudyard Kipling.sigpic

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    • #3
      Hello,
      I have one in my garden, I think so long as it's securely attached to the sleepers(if its similar to mine you could drill holes through the base and put plenty of large screws or bolts through it and into the sleepers) and you use double the amount of clips to hold the polycarbonate panels in it should be ok, extra glazing clips can be bought on the internet.

      Regards, Dave

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      • #4
        Hi, the plot is on part of an open field that I am clearing. Its on a hillside about 150m above sea level but it has open farmland to the east, rising upto the west for about 1/4 to the top of the hill.
        The prevailing wind is from the south east it whips over a forest about 1/2mile away and has nothing in its way.

        we are in a bit of a wind corridor with wind turbines to the east and west of us and get some wicked winds ( especially at the momen, it seems)
        82.6% of people believe any statstic!

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        • #5
          Originally posted by janzbro View Post
          Hi, the plot is on part of an open field that I am clearing. Its on a hillside about 150m above sea level but it has open farmland to the east, rising upto the west for about 1/4 to the top of the hill.
          The prevailing wind is from the south east it whips over a forest about 1/2mile away and has nothing in its way.

          we are in a bit of a wind corridor with wind turbines to the east and west of us and get some wicked winds ( especially at the momen, it seems)
          I have 2 of them as well as a glass one, so in my experience, the more you can secure it the better as already said...But I would expect that panes/panels will pop/blow out in high winds and in some cases break....The more you can clip on the better or use in Tec 7 in appropriate places
          Last edited by Tripmeup; 17-11-2015, 09:11 AM.
          I dream of a better tomorrow, where chickens can cross the road and not be questioned about their motives....


          ...utterly nutterly
          sigpic

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          • #6
            The windows of mine used to pop out in the slightest wind, so I siliconed them in.

            Make sure you put it up with the door(s) facing away from the prevailing wind, as if the wind gets inside it will try to take off

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            • #7
              Yes its the panels popping out that is the most likely, silicone every panel in with clear silicone inside and out, secure a length of baton across the middle of the panels and place large pots against the outside of the panels to stop them bowing.
              photo album of my garden in my profile http://www.growfruitandveg.co.uk/gra...my+garden.html

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              • #8
                Thanks, all good advice,

                I have never had a green house so does it need to be in full sun or could I attach/screw it against my fence to the south of the plot and have the door west facing away from the prevailing wind, it would be shaded on it south side by a hedge about 5 feet high but better protected
                82.6% of people believe any statstic!

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                • #9
                  hi ,someone on my allotment bought a greenhouse with the plastic panels and in high winds they popped out last year, this year they put a netting (the type you grow peas up )over it and so far it has stayed in one piece and we are on top of a hill and very exposed ,worth a try ,good luck ,cheers
                  The Dude abides.

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                  • #10
                    Originally posted by janzbro View Post
                    Thanks, all good advice,

                    I have never had a green house so does it need to be in full sun or could I attach/screw it against my fence to the south of the plot and have the door west facing away from the prevailing wind, it would be shaded on it south side by a hedge about 5 feet high but better protected
                    .......doesn't need to be in full sun all day, some protection is worth more imo..
                    I dream of a better tomorrow, where chickens can cross the road and not be questioned about their motives....


                    ...utterly nutterly
                    sigpic

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                    • #11
                      Idealy you should site it on the South end of your plot to maximise the light, you can always shade it if it gets too hot, but having it behind a fence means a part will always be in shade, there is also the danger of the fence been blown against it, but a case of a rock and a hard place.
                      I fixed mine to sleepers as well, and after last years gales ...didn`t flinch! I have also sited mine near to my shed and with nearby sheds do give some protection, my actual glass greenhouse is more exposed compared but has stood the test so far.
                      Last edited by cheapskate chaz; 22-11-2015, 02:34 PM.
                      Girls are like flowers, a little attention every day and they`ll blossom.

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                      • #12
                        polycarb

                        Here is what I did,

                        A bit of 2 x 1 baton on the inside, never had a problem since...

                        Since doing this I have also screwed straight through the polycarb into the baton with a big fat mudguard washer to sandwich the polycarb....
                        Attached Files
                        Last edited by chilli_grower; 27-01-2016, 02:59 PM.

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                        • #13
                          Cheers a picture paints a thousand words.
                          82.6% of people believe any statstic!

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