New greenhouse leaking

Discussion in 'Greenhouse Growing' started by Spotty Muldoon, Apr 27, 2023.

  1. Spotty Muldoon

    Spotty Muldoon Apprentice Gardener

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    We have a new 10 x 6 Halls Aluminium greenhouse mounted on a new concrete base and a Halls plinth. The problem is that it is leaking water between the concrete base and the plinth. I tried putting some silicon sealant inside and outside but the water is still getting in. On top of that after the high(ish) wind we lost 14 panes of glass. We have now put extra clips in so that should help. Anyway, that doesn’t solve the leak problem. I thought maybe some rubberised paint or something?

    Any help would be greatly appreciated.

    Thanks

    Brian
     
  2. pete

    pete Growing a bit of this and a bit of that....

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    I think this kind of thing happens a lot, difficult to stop really, is it a big problem as such.
    Most people tend to spill water in the greenhouse when watering, I don't think many are totally water proof.

    You shouldn't be losing glass though, did you leave the vents or door open during the strong winds.
     
  3. Spotty Muldoon

    Spotty Muldoon Apprentice Gardener

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    No I didn’t. I think the clips provided are too weak. Bought some extra ones from Wilko’s, they seem to be much stronger. Put three extra ones on each pane. With regards to the leak I will try and put some more sealant on. In the one corner (near the door) it is like a small lake. I must at least reduce the amount coming in. If it gets any worse it will save me watering the plants.
     
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    • pete

      pete Growing a bit of this and a bit of that....

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      Ok, yeah really more sealant may work but I doubt it will be a permanent fix, I don't suppose you want to raise the floor, maybe screed it over.
      Usually the glass blows out once the wind gets inside the green house.
       
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      • Sheps

        Sheps Keen Gardener

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        I had the same problem with water ingress under the frame, I sealed it with this, no leaks for the last 6 years.

        IMG_20230427_123353884~2.jpg
         
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        • JWK

          JWK Gardener Staff Member

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          I've got leaks in mine, it is difficult to find and stop them but it's not too bad. It seems to run down the glass and somehow get under and through the joint to the base. Silicon should help squeezed into any gaps. I don't bother but of it's making the beds too wet inside then something would have to be done. Better to apply from the inside only.
           
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          • Sheps

            Sheps Keen Gardener

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            This is what mine used to be like just after install back in 2017.

            IMG_2380.jpg


            But, since using the Dow 791 sealant I have had absolutely nothing come in under the frame.

            The sealant is highly flexible, the website says + / - 50% joint movement capability which is what you need as regular silicone sealant won't give you that.
             
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            • pete

              pete Growing a bit of this and a bit of that....

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              We used to use the low modulus neutral cure silicon for glazing, I agree its softer than the usual type you see.
              It actually sticks to polycarbonate as well.
               
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