[woodavon]

Help!  Have just taken over an allotment.  It has a small shed and the rainwater from thle roof is funnelled into an IBC which we have just noticed has developed a slight weep/leak. 
The ground underneath was soggy which is how we spotted it.  Does anyone have any ideas how we might be able to patch up the plastic and fix it?

[arugula]

I'm assuming its a plastic IBC, in which case its likely to be made of HDPE. If you find a suitable glue, cement or tape, hopefully you'll be able to mend your leak - depending on its size and position on your tank.

[woodavon]

Thanks Argyllie!  Yes it is some sort of plastic - will have a go - there's nothing to lose (we're losing the water already!).

[Ice]

You could also try a fibreglass car body repair kit.  Check compatibility.

[woodavon]

Brilliant - thanks!

[arugula]

Just had a quick look on YouTube and there's an advertising video selling a two part epoxy resin which they say will make repairs. Here: repairing HDPE...

[GrannieAnnie]

As another idea, I collect Lilliput land cottages, and bought some of them cheap at boot fairs as they were damaged.  I bought something called Milliput, which again is a 2 part cementy stuff.  It said it is waterproof, heat proof, cold proof etc.

I used it over a hole in my green water butt and where a leg had come off a chicken drinker and left a nearly inch hole.  Both were watertight, and in fact the water butt is still holding water 3 years later!

I made sure the milliput was spread over the hole at the back as well as the front, but of course, that's a bit harder with an IBC tank! lol