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Thread: DIY greenhouse (on the cheap)

  1. #9
    nickdub is online now Early Fruiter
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    I've been thinking of using corrugated plastic as a roof on a poly-tunnel; - my idea would be to use battens along the length but inside the metal hoops wired in place - then screw the plastic sheeting down to these using long screws and rubber washers - been keeping an eye out for cheap corrugated sheets near me, but no luck so far.
    Baldy and Can the Man like this.

  2. #10
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    Yeah - long screws and rubber washer might do the trick - cheers!
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    1574 gin and tonics please Monica, large ones.

  3. #11
    Jwood0123 is offline Germinator
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    Quote Originally Posted by Baldy View Post
    Looks like I might be able to get my hands on an 6' x 12' polytunnel frame - I might end up with something that looks like a see-thru anderson shelter.

    Anyhow - the steel its made from is better than I expected, though still Chinese.. so will rust. Any thoughts on fixing the corrugated plastic to the steel? I reckon it would likely rust if I drill/screw through - though that is probably the easiest option.
    I think I might have enough wood to but a wooden frame up to the point where the roof section starts to curve - so I can screw into that - but I haven't come up with any ideas (other than screwing direct) for the curved roof section. Perhaps I can fashion some sort of wooden framing there too...
    Not sure if I am imagining it right, but do you need to fix it to the top? could the corrugated plastic span from the base of each side and be bolted onto the frame at the bottom ( helps with the rust problem too as it'll be less unsightly) or are the pieces too short?

    If they're too short for that, is it possible to build a short solid wall (between 2-4 ft high) out of slats or plyboard at the base and use the plastic as a kind of sun roof?

    lastly regarding fixing the plastic, would it be possible to use U bolts to wrap around the frame's beams?
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  4. #12
    benb89 is offline Seedling
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    Quote Originally Posted by Baldy View Post
    Looks like I might be able to get my hands on an 6' x 12' polytunnel frame - I might end up with something that looks like a see-thru anderson shelter.

    Anyhow - the steel its made from is better than I expected, though still Chinese.. so will rust. Any thoughts on fixing the corrugated plastic to the steel? I reckon it would likely rust if I drill/screw through - though that is probably the easiest option.
    I think I might have enough wood to but a wooden frame up to the point where the roof section starts to curve - so I can screw into that - but I haven't come up with any ideas (other than screwing direct) for the curved roof section. Perhaps I can fashion some sort of wooden framing there too...
    Could you use pipe clips? Attach the pipe clips to the corrugated plastic and then clip them onto the steel frame? Alternatively you could attach pipe clips too wood, clip the wood to the frame and screw the plastic sheeting directly to the wood.

    https://www.screwfix.com/p/talon-15m...100-pack/19684
    Jwood0123 likes this.

  5. #13
    Baldy's Avatar
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    Quote Originally Posted by benb89 View Post
    Could you use pipe clips? Attach the pipe clips to the corrugated plastic and then clip them onto the steel frame? Alternatively you could attach pipe clips too wood, clip the wood to the frame and screw the plastic sheeting directly to the wood.

    https://www.screwfix.com/p/talon-15m...100-pack/19684
    Ah hah. Friend if mine was trying to describe these but I couldn't figure out what he was on about. Makes sense and would probably work. Many thanks.

    1574 gin and tonics please Monica, large ones.

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