Repair Cracked IBC With SUGRU





The IBC container used to hold rainwater on our allotment had developed a large and nasty crack near the bottom. Repair posed a challenge; any fix would need to be waterproof, and extremely strong given the pressure that will be exerted on the repair site once the container is full. Furthermore, the repair could only be attempted on one side of the container. Saving and reusing rainwater on our allotment is important, but simply replacing the IBC was not an attractive option, being expensive, time consuming and bad for the environment.

Step 1: Preparing the Repair Site

First we prepared the site of the repair by ensuring it was dry, giving it a quick clean-up, and scratching the surrounding area with scissors to help the SUGRU adhere better.

Step 2: Patching Up With SUGRU

We worked some SUGRU for a few moments until it was soft and malleable and used it to patch the entire area surrounding the crack. We were generous with the SUGRU, taking into account the pressure that 1000l of water will exert on the repair once completed.

Step 3: The Repair Is Complete!

After a day or two to cure, the repair is complete. Our IBC is once again in service storing rainwater on our allotment, saving water, plastic and money!



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    10 Discussions


    4 years ago on Introduction

    This looks interesting. I'd be curious to hear some feedback on how this holds up over time. I've never had much luck patching cracks in plastic of this nature.

    Do you know what type of plastic the container is made of, by any chance?

    5 replies

    Reply 1 year ago

    UPDATE: the repair is still perfect, has gone through 3 winters and summers and shows no sign of degregation.

    The project is four months old. I pooped down to my allotment this evening and the IBC is full of water, the sugru is holding great. I cannot see there ever being a problem, as far as I am concerned its a permanent repair. My son was kicking the sugru to see if it was still attached and it was ;~) I Highhlky recommend it.

    Six months in, stood up to the freezing weather, rain and wind. Still holding fast and showing no signs of wear. Looks just as good as the day it was applied.


    4 years ago

    Why not patch it with fiberglass? sugru seems a little costly to use so much.

    1 reply

    Because I wanted a reapir that was fast, clean, strong with minimal effort. I also used the other half of the packet to repair my roof and water barrel. The repairs look good, took little time to effect and did not cost a lot at all.


    4 years ago

    Why so many sugru projects? Does sugru stay bendy when dried or get hard?

    1 reply

    SUGRU stays flexible but it is firm. Its a latex like rubber so it cures hard but has some give, its useful for making an object more comfortable but it has so many properties like strength, insulating, colourful, bonds to most surfaces, petrol and chemical resistant. check out the sugru website